docs/master: discussion.roff annotate

annotate discussion.roff @ 230:96778c1afc3e

More cleanups.

author	markus schnalke <meillo@marmaro.de>
date	Mon, 16 Jul 2012 00:37:31 +0200
parents	a1468cf505fd
children	77c87c38bff4

rev	line source
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1 .H0 "Discussion
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	3 This main chapter discusses the practical work accomplished in the
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	4 mmh project.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	5 It is structured along the goals chosen for the project.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	6 A selection of the work undertaken
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	7 is described.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	8 .P
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	9 This discussion compares the present version of mmh with the state of
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	10 nmh at the time when the mmh project had started, i.e. fall 2011.
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	11 Recent changes in nmh are rarely part of the discussion.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	12 .P
230 96778c1afc3e More cleanups. markus schnalke <meillo@marmaro.de> parents: 228 diff changeset	13 Whenever lines of code were counted, David A. Wheeler's \fIsloccount\fP
96778c1afc3e More cleanups. markus schnalke <meillo@marmaro.de> parents: 228 diff changeset	14 was used to measure the amount in a comparable way.
96778c1afc3e More cleanups. markus schnalke <meillo@marmaro.de> parents: 228 diff changeset	15 .P
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	16 For the reader's convenience, the structure of modern email systems
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	17 is depicted in the following figure.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	18 It illustrates the path a message takes from sender to recipient.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	19
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	20 .sp 1.5
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	21 .KS
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	22 .in 2c
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	23 .so input/mail-agents.pic
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	24 .KE
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	25 .sp 1.5
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	26
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	27 .LP
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	28 The ellipses denote mail agents, i.e. different jobs in email processing.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	29 These are:
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	30 .IP "Mail User Agent (MUA)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	31 The only program users directly interact with.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	32 It includes functions to compose new mail, display received mail,
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	33 and to manage the mail storage.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	34 It is called a \fImail client\fP as well.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	35 .IP "Mail Submission Agent (MSA)
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	36 A special kind of Mail Transfer Agent, used to submit mail into the
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	37 mail transport system.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	38 Often it is also called an MTA.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	39 .IP "Mail Transfer Agent (MTA)
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	40 A node in the mail transport system.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	41 It transfers incoming mail to a transport node nearer to the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	42 final destination.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	43 An MTA may be the final destination itself.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	44 .IP "Mail Delivery Agent (MDA)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	45 Delivers mail according to a set of rules.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	46 Usually, the messages are stored to disk.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	47 .IP "Mail Retrieval Agent (MRA)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	48 Initiates the transfer of mail from a remote location to the local machine.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	49 (The dashed arrow in the figure represents the pull request.)
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	50 .LP
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	51 The dashed boxes represent entities that usually reside on single machines.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	52 The box on the lower left represents the sender's system.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	53 The box on the upper left represents the first mail transfer node.
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	54 The box on the upper right represents the transfer node responsible
b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	55 for the destination address.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	56 The box on the lower right represents the recipient's system.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	57 Often, the boxes above the dotted line are servers on the Internet.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	58 Many mail clients, including nmh, include all of the components below
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	59 the dotted line.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	60 This is not the case for mmh; it implements the MUA only.
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	61
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	62
5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	63
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	64
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	65
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	66
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	67 .\" --------------------------------------------------------------
125 0e102cec0c73 s/stream-line/streamline/; s/motorbike/motorcycle/ markus schnalke <meillo@marmaro.de> parents: 124 diff changeset	68 .H1 "Streamlining
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	69
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	70 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	71 MH once provided a complete email system.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	72 The community around nmh tries to keep nmh in similar shape.
178 520b3c7abba1 s/a MUA/an MUA/ markus schnalke <meillo@marmaro.de> parents: 177 diff changeset	73 In fundamental contrast, mmh shall be an MUA only.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	74 I believe that the development of all-in-one mail systems is obsolete.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	75 Today, email is too complex to be fully covered by a single project.
4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	76 Such a project will not be able to excel in all aspects.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	77 Instead, the aspects of email should be covered by multiple projects,
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	78 which then can be combined to form a complete system.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	79 Excellent implementations for the various aspects of email already exist.
223 1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	80 Just to name three examples: Postfix is a specialized MTA, Procmail
1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	81 is a specialized MDA, and Fetchmail is a specialized MRA.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	82 I believe that it is best to use such specialized tools instead of
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	83 providing the same function once more as a side component.
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	84 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	85 Doing something well requires focusing on a small set of specific aspects.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	86 Under the assumption that development which is focussed on a particular
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	87 area produces better results there, specialized projects will be superior
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	88 in their field of focus.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	89 Hence, all-in-one mail system projects \(en no matter if monolithic
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	90 or modular \(en will never be the best choice in any of the fields.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	91 Even in providing the most consistent all-in-one system, they are likely
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	92 to be beaten by projects that focus exclusively on the creation
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	93 of a homogeneous system by integrating existing mail components.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	94 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	95 Usually, the limiting resource in the community development of
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	96 free software is man power.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	97 If the development effort is spread over a large development area,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	98 it becomes more difficult to compete with the specialists in the
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	99 various fields.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	100 The concrete situation for MH-based mail systems is even tougher,
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	101 given their small and aged community, concerning both developers and users.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	102 .P
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	103 In consequence, I believe that the available development resources
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	104 should focus on the point where MH is most unique.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	105 This is clearly the user interface \(en the MUA.
125 0e102cec0c73 s/stream-line/streamline/; s/motorbike/motorcycle/ markus schnalke <meillo@marmaro.de> parents: 124 diff changeset	106 Peripheral parts should be removed to streamline mmh for the MUA task.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	107
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	108
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	109 .H2 "Mail Transfer Facilities
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	110 .Id mail-transfer-facilities
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	111 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	112 The removal of the mail transfer facilities, effectively dropping the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	113 MSA and MRA, had been the first work task in the mmh project.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	114 The desire for this change initiated the creation of the mmh project.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	115 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	116 Focusing on one mail agent role only, is motivated by Eric Allman's
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	117 experience with Sendmail.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	118 He identified the limitation of Sendmail
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	119 to the MTA task as one reason for its success:
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	120 .[ [
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	121 costales sendmail
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	122 .], p. xviii]
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	123 .QS
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	124 Second, I limited myself to the routing function \(en
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	125 I wouldn't write user agents or delivery back-ends.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	126 This was a departure of the dominant thought of the time,
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	127 in which routing logic, local delivery, and often the network code
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	128 were incorporated directly into the user agents.
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	129 .QE
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	130 .P
187 5360f5fdb118 Added mail agent figure. markus schnalke <meillo@marmaro.de> parents: 183 diff changeset	131 In nmh, the MSA is called \fIMessage Transfer Service\fP (MTS).
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	132 This facility, implemented by the
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	133 .Pn post
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	134 command, establishes network connections and spoke SMTP to submit
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	135 messages to be relayed to the outside world.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	136 When email transfer changed, this part needed to be changed as well.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	137 Encryption and authentication for network connections
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	138 needed to be supported, hence TLS and SASL were introduced into nmh.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	139 This added complexity without improving the core functions.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	140 Furthermore, keeping up with recent developments in the field of
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	141 mail transfer requires development power and specialists.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	142 In mmh, this whole facility was simply cut off
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	143 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	144 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	145 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b .
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	146 Instead, mmh depends on an external MSA.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	147 All outgoing mail in mmh goes through the
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	148 .Pn sendmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	149 command, which almost any MSA provides.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	150 If not, a wrapper program can be written.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	151 It must read the message from the standard input, extract the
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	152 recipient addresses from the message header, and hand the message
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	153 over to the MSA.
223 1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	154 For example, a wrapper script for qmail would be:
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	155 .VS
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	156 #!/bin/sh
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	157 exec qmail-inject # ignore command line arguments
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	158 VE
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	159 The requirement to parse the recipient addresses out of the message header
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	160 may be removed in the future.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	161 Mmh could pass the recipient addresses as command line arguments.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	162 This appears to be the better interface.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	163 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	164 To retrieve mail, the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	165 .Pn inc
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	166 command in nmh acts as MRA.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	167 It establishes network connections
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	168 and speaks POP3 to retrieve mail from remote servers.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	169 As with mail submission, the network connections required encryption and
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	170 authentication, thus TLS and SASL were added to nmh.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	171 Support for message retrieval through IMAP will soon become necessary
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	172 additions, too, and likewise for any other changes in mail transfer.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	173 But not in mmh because it has dropped the support for retrieving mail
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	174 from remote locations
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	175 .Ci ab7b48411962d26439f92f35ed084d3d6275459c .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	176 Instead, it depends on an external tool to cover this task.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	177 Mmh has two paths for messages to enter mmh's mail storage:
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	178 (1) Mail can be incorporated with
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	179 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	180 from the system maildrop, or (2) with
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	181 .Pn rcvstore
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	182 by reading them, one at a time, from the standard input.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	183 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	184 With the removal of the MSA and MRA, mmh converted from a complete
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	185 mail system to only an MUA.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	186 Now, of course, mmh depends on third-party software.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	187 An external MSA is required to transfer mail to the outside world;
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	188 an external MRA is required to retrieve mail from remote machines.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	189 Excellent implementations of such software exist.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	190 They likely are superior to the internal versions that were removed.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	191 Additionally, the best suiting programs can be chosen freely.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	192 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	193 As it had already been possible to use an external MSA and MRA,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	194 why should the internal version not be kept for convenience?
228 a1468cf505fd Spellchecked. markus schnalke <meillo@marmaro.de> parents: 227 diff changeset	195 Transferred to a different area, the question,
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	196 whether there is sense in having a fall-back pager in all
b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	197 the command line tools for the cases when
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	198 .Pn more
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	199 or
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	200 .Pn less
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	201 are not available, appears to be ridiculous.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	202 Of course, MSAs and MRAs are more complex than text pagers
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	203 and not necessarily available but still the concept of orthogonal
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	204 design holds: ``Write programs that do one thing and do it well''.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	205 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	206 mcilroy unix phil
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	207 p. 53
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	208 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	209 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	210 mcilroy bstj foreword
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	211 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	212 Here, this part of the Unix philosophy was applied not only
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	213 to the programs but to the project itself.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	214 In other words:
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	215 Develop projects that focus on one thing and do it well.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	216 Projects which have grown complex should be split, for the same
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	217 reasons that programs which have grown complex should be split.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	218 If it is conceptionally more elegant to have the MSA and MRA as
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	219 separate projects then they should be separated.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	220 In my opinion, this is the case.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	221 The RFCs suggest this separation by clearly distinguishing the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	222 different mail handling tasks [RFC\\|821].
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	223 The small interfaces between the mail agents support the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	224 separation as well.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	225 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	226 Once, email had been small and simple.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	227 At that time,
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	228 .Pn /bin/mail
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	229 had covered everything there was to email and still was small and simple.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	230 Later, the essential complexity of email increased.
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	231 (Essential complexity is the complexity defined by the problem itself
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	232 .[ [
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	233 brooks no silver bullet
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	234 .]].)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	235 Consequently, email systems grew.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	236 RFCs started to introduce the concept of mail agents to separate the
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	237 various roles because they became more extensive and because
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	238 new roles appeared.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	239 As mail system implementations grew, parts of them were split off.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	240 For instance, a POP server was included in the original MH;
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	241 it was removed in nmh.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	242 Now is the time to go one step further and split off the MSA and MRA,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	243 as well.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	244 Not only does this decrease the code size of the project,
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	245 more importantly, it unburdens mmh of the whole field of
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	246 message transfer, with all its implications for the project.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	247 There is no more need for concern with changes in network transfer.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	248 This independence is gained by depending on external components
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	249 that cover the field.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	250 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	251 In general, functionality can be added in three different ways:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	252 .LI 1
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	253 By implementing the function in the project itself.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	254 .LI 2
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	255 By depending on a library that provides the function.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	256 .LI 3
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	257 By depending on a program that provides the function.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	258 .LP
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	259 While implementing the function in the project itself leads to the
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	260 largest increase in code size and requires the most maintenance
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	261 and development work,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	262 it keeps the project's dependence on other software lowest.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	263 Using libraries or external programs requires less maintenance work
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	264 but introduces dependencies on external projects.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	265 Programs have the smallest interfaces and provide the best separation,
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	266 but possibly limit the information exchange.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	267 External libraries are more strongly connected than external programs,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	268 thus information can be exchanged in a more flexible manner.
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	269 Obviously, adding code to a project increases the maintenance work.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	270 As implementing complex functions in the project itself adds
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	271 a lot of code, this should be avoided if possible.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	272 Thus, the dependencies only change in their character,
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	273 not in their existence.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	274 In mmh, library dependencies on
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	275 .Pn libsasl2
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	276 and
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	277 .Pn libcrypto /\c
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	278 .Pn libssl
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	279 were traded against program dependencies on an MSA and an MRA.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	280 This also meant trading build-time dependencies against run-time
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	281 dependencies.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	282 Besides providing stronger separation and greater flexibility,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	283 program dependencies also allowed
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	284 over 6\\|000 lines of code to be removed from mmh.
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	285 This made mmh's code base about 12\\|% smaller.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	286 Reducing the project's code size by such an amount without actually
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	287 losing functionality is a convincing argument.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	288 Actually, as external MSAs and MRAs are likely superior to the
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	289 project's internal versions, the common user even gains functionality.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	290 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	291 Users of MH should not have problems setting up an external MSA and MRA.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	292 Also, the popular MSAs and MRAs have large communities and a lot
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	293 of available documentation.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	294
223 1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	295 Choices for MSAs range from small forwarders such as \fIssmtp\fP and
1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	296 \fInullmailer\fP, over mid-size MTAs including \fImasqmail\fP and
1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	297 \fIdma\fP, up to full-featured MTAs as for instance \fIPostfix\fP.
1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	298 MRAs are provided for example by \fIfetchmail\fP, \fIgetmail\fP,
1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	299 \fImpop\fP, and \fIfdm\fP.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	300
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	301
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	302 .H2 "Non-MUA Tools
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	303 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	304 One goal of mmh is to remove the tools that do not significantly
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	305 contribute to the MUA's job.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	306 Loosely related and rarely used tools distract from a lean appearance,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	307 and require maintenance work without adding much to the core task.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	308 By removing these tools, mmh became more streamlined and focused.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	309 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	310 .Pn conflict
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	311 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	312 .Ci 8b235097cbd11d728c07b966cf131aa7133ce5a9
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	313 because it is a mail system maintenance tool and not MUA-related.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	314 It even checked
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	315 .Fn /etc/passwd
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	316 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	317 .Fn /etc/group
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	318 for consistency, which is completely unrelated to email.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	319 A tool like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	320 .Pn conflict
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	321 is surely useful, but it should not be shipped with mmh.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	322 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	323 .Pn rcvtty
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	324 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	325 .Ci 14767c94b3827be7c867196467ed7aea5f6f49b0
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	326 because its use case of writing to the user's terminal
200 c299ed65d015 Spell checked. markus schnalke <meillo@marmaro.de> parents: 199 diff changeset	327 on reception of mail is obsolete.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	328 If users like to be informed of new mail, the shell's
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	329 .Ev MAILPATH
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	330 variable or graphical notifications are technically more appealing.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	331 Writing to terminals directly is hardly ever desired today.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	332 If, though, one prefers this approach, the standard tool
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	333 .Pn write
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	334 can be used in a way similar to:
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	335 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	336 scan -file - \| write `id -un`
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	337 VE
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	338 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	339 .Pn viamail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	340 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	341 .Ci eda72d6a7a7c20ff123043fb7f19c509ea01f932
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	342 when the new attachment system was activated, because
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	343 .Pn forw
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	344 could then cover the task itself.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	345 The program
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	346 .Pn sendfiles
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	347 was rewritten as a shell script wrapper around
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	348 .Pn forw .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	349 .Ci 0e82199cf3c991a173e0ac8aa776efdb3ded61e6
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	350 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	351 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	352 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	353 .Ci bb9360ead7eb7a3fedcce2eeedfc660014e41dbe ,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	354 because it lost its use case when POP support was removed.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	355 A call to
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	356 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	357 provided hardly more information than:
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	358 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	359 ls -l /var/mail/meillo
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	360 VE
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	361 Yet, it distinguished between old and new mail, but
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	362 these details can be retrieved with
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	363 .Pn stat (1),
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	364 too.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	365 A small shell script could be written to print the information
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	366 in a similar way, if truly necessary.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	367 As mmh's
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	368 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	369 only incorporates mail from the user's local maildrop,
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	370 and thus no data transfers over slow networks are involved,
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	371 there is hardly any need to check for new mail before incorporating it.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	372 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	373 .Pn msh
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	374 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	375 .Ci 916690191222433a6923a4be54b0d8f6ac01bd02
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	376 because the tool was in conflict with the philosophy of MH.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	377 It provided an interactive shell to access the features of MH.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	378 However, it was not just a shell tailored to the needs of mail handling,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	379 but one large program that had several MH tools built in.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	380 This conflicted with the major feature of MH of being a tool chest.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	381 .Pn msh 's
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	382 main use case had been accessing Bulletin Boards, which have ceased to
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	383 be popular.
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	384 .P
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	385 Removing
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	386 .Pn msh
212 9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	387 together with the truly archaic code relics
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	388 .Pn vmh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	389 and
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	390 .Pn wmh
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	391 saved more than 7\\|000 lines of C code \(en
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	392 about 15\\|% of the project's original source code amount.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	393 Having less code \(en with equal readability, of course \(en
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	394 for the same functionality is an advantage.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	395 Less code means less bugs and less maintenance work.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	396 As
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	397 .Pn rcvtty
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	398 and
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	399 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	400 are assumed to be rarely used and can be implemented in different ways,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	401 why should one keep them?
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	402 Removing them streamlined mmh.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	403 .Pn viamail 's
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	404 use case is now partly obsolete and partly covered by
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	405 .Pn forw ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	406 hence there is no reason to still maintain it.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	407 .Pn conflict
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	408 is not related to the mail client, and
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	409 .Pn msh
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	410 conflicts with the basic concept of MH.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	411 These two tools might still be useful, but they should not be part of mmh.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	412 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	413 .Id slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	414 Finally, there is
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	415 .Pn slocal ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	416 which is an MDA and thus not directly MUA-related.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	417 It should be removed from mmh because including it conflicts with
178 520b3c7abba1 s/a MUA/an MUA/ markus schnalke <meillo@marmaro.de> parents: 177 diff changeset	418 the idea that mmh is an MUA only.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	419 However,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	420 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	421 provides rule-based processing of messages, like filing them into
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	422 different folders, which is otherwise not available in mmh.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	423 Although
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	424 .Pn slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	425 neither pulls in dependencies, nor does it include a separate
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	426 technical area (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	427 .Cf mail-transfer-facilities ),
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	428 it still accounts for about 1\\|000 lines of code that need to be maintained.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	429 As
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	430 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	431 is almost self-standing, it should be split off into a separate project.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	432 This would cut the strong connection between the MUA mmh and the MDA
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	433 .Pn slocal .
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	434 For anyone not using MH,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	435 .Pn slocal
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	436 would become yet another independent MDA, like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	437 .I procmail .
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	438 Then
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	439 .Pn slocal
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	440 could be installed without a complete MH system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	441 Likewise, mmh users could decide to use
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	442 .I procmail
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	443 without having a second, unused MDA, i.e.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	444 .Pn slocal ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	445 installed.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	446 That appears to be conceptionally the best solution.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	447 Yet,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	448 .Pn slocal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	449 is not split off.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	450 I defer the decision over
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	451 .Pn slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	452 out of a need for deeper investigation.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	453 In the meanwhile, it remains part of mmh
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	454 as its continued existence is not significant;
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	455 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	456 is unrelated to the rest of the project.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	457
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	458
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	459
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	460 .H2 "Displaying Messages
155 75f20c925999 Fixed macro typo; and added typo fix found by Boris. markus schnalke <meillo@marmaro.de> parents: 154 diff changeset	461 .Id mhshow
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	462 .P
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	463 Since the very beginning, already in the first concept paper,
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	464 .[
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	465 original memo rand mh shapiro gaines
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	466 .]
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	467 .Pn show
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	468 had been MH's message display program.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	469 .Pn show
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	470 mapped message numbers and sequences to files and invoked
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	471 .Pn mhl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	472 to have the files formatted.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	473 With MIME, this approach was not sufficient anymore.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	474 MIME messages can consist of multiple parts.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	475 Some parts, like binary attachments or text content in foreign charsets,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	476 are not directly displayable.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	477 .Pn show 's
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	478 understanding of messages and
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	479 .Pn mhl 's
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	480 display capabilities could not cope with the task any longer.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	481 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	482 Instead of extending these tools, additional tools were written from
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	483 scratch and were added to the MH tool chest.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	484 Doing so is encouraged by the tool chest approach.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	485 Modular design is a great advantage for extending a system,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	486 as new tools can be added without interfering with existing ones.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	487 First, the new MIME features were added in form of the single program
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	488 .Pn mhn .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	489 The command
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	490 .Cl "mhn -show 42
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	491 had then shown the message number
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	492 .Fn 42 ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	493 interpreting MIME.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	494 With the 1.0 release of nmh in February 1999, Richard Coleman finished
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	495 the split of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	496 .Pn mhn
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	497 into a set of specialized tools, which together covered the
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	498 multiple aspects of MIME.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	499 One of them was
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	500 .Pn mhshow ,
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	501 which replaced
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	502 .Cl "mhn -show" .
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	503 It was capable of displaying MIME messages appropriately.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	504 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	505 From then on, two message display tools were part of nmh,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	506 .Pn show
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	507 and
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	508 .Pn mhshow .
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	509 To ease the life of users,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	510 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	511 was extended to automatically hand the job over to
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	512 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	513 if displaying the message would be beyond
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	514 .Pn show 's
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	515 abilities.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	516 In consequence, the user would simply invoke
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	517 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	518 (possibly through
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	519 .Pn next
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	520 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	521 .Pn prev )
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	522 and get the message printed with either
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	523 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	524 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	525 .Pn mhshow ,
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	526 whatever was more appropriate.
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	527 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	528 Having two similar tools for basically the same task is redundancy.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	529 Usually, users do not distinguish between
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	530 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	531 and
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	532 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	533 in their daily mail reading.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	534 Having two separate display programs was therefore unnecessary
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	535 from a user's point of view.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	536 Besides, the development of both programs needed to be in sync,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	537 to ensure that the programs behaved in a similar way,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	538 because they were used like a single tool.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	539 Different behavior would have surprised the user.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	540 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	541 Today, non-MIME messages are rather seen to be a special case of
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	542 MIME messages, although it is the other way round.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	543 As
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	544 .Pn mhshow
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	545 already had been able to display non-MIME messages, it appeared natural
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	546 to drop
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	547 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	548 in favor of using
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	549 .Pn mhshow
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	550 exclusively
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	551 .Ci 4c1efddfd499300c7e74263e57d8aa137e84c853 .
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	552 Removing
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	553 .Pn show
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	554 is no loss in function, because
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	555 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	556 covers it completely.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	557 Yet, the old behavior of
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	558 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	559 can still be emulated with the simple command line:
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	560 .VS
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	561 mhl `mhpath c`
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	562 VE
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	563 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	564 For convenience,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	565 .Pn mhshow
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	566 was renamed to
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	567 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	568 after
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	569 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	570 was gone.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	571 It is clear that such a rename may confuse future developers when
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	572 trying to understand the history.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	573 Nevertheless, I consider the convenience on the user's side,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	574 to outweigh the inconvenience for understanding the evolution
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	575 of the tools.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	576 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	577 To prepare for the transition,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	578 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	579 was reworked to behave more like
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	580 .Pn show
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	581 first (cf. Sec.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	582 .Cf mhshow ).
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	583 Once the tools behaved more alike, the replacing appeared to be
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	584 even more natural.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	585 Today, mmh's new
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	586 .Pn show
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	587 has become the one single message display program once again,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	588 with the difference
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	589 that today it handles MIME messages as well as non-MIME messages.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	590 The outcomes of the transition are one program less to maintain,
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	591 no second display program for users to deal with,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	592 and less system complexity.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	593 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	594 Still, removing the old
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	595 .Pn show
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	596 hurts in one regard: It had been such a simple program.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	597 Its lean elegance is missing from the new
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	598 .Pn show ,
225 d83ab437e3a6 Removed FIXMEs (XXX) in the sources, those that I won't fix. markus schnalke <meillo@marmaro.de> parents: 224 diff changeset	599 but there is no alternative;
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	600 supporting MIME demands higher essential complexity.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	601
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	602
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	603
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	604 .H2 "Configure Options
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	605 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	606 Customization is a double-edged sword.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	607 It allows better suiting setups, but not for free.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	608 There is the cost of code complexity to be able to customize.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	609 There is the cost of less tested setups, because there are
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	610 more possible setups and especially corner cases.
226 27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	611 Steve Johnson confirms:
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	612 .[ [
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	613 eric raymond the art of unix programming
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	614 .], p. 233]
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	615 .QS
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	616 Unless it is done very carefully, the addition of an on/off
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	617 configuration option can lead to a need to double the amount of
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	618 testing. Since in practice one never does double the amount of testing,
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	619 the practical effect is to reduce the amount of testing that any
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	620 given configuration receives. Ten options leads to 1024 times as much
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	621 testing, and pretty soon you are talking real reliability problems.
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	622 .QE
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	623 .LP
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	624 Additionally, there is the cost of choice itself.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	625 The code complexity directly affects the developers.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	626 Less tested code affects both users and developers.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	627 The problem of choice affects the users, for once by having to choose
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	628 but also by more complex interfaces that require more documentation.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	629 Whenever options add few advantages but increase the complexity of the
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	630 system, they should be considered for removal.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	631 I have reduced the number of project-specific configure options from
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	632 15 to 3.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	633
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	634 .U3 "Mail Transfer Facilities
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	635 .P
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	636 With the removal of the mail transfer facilities (cf. Sec.
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	637 .Cf mail-transfer-facilities )
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	638 five configure options vanished:
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	639 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	640 The switches
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	641 .Sw --with-tls
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	642 and
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	643 .Sw --with-cyrus-sasl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	644 had activated the support for transfer encryption and authentication.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	645 They are not needed anymore.
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	646 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	647 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	648 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	649 The configure switch
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	650 .Sw --enable-pop
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	651 had activated the message retrieval facility.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	652 Whereas the code area that had been conditionally compiled in
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	653 for TLS and SASL support was small,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	654 the conditionally compiled code area for POP support was much larger.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	655 The code base had only changed slightly on toggling TLS or SASL
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	656 support but it had changed much on toggling POP support.
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	657 The changes in the code base could hardly be overviewed.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	658 By having POP support togglable, a second code base had been created,
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	659 one that needed to be tested.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	660 This situation is basically similar for the conditional TLS and SASL
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	661 code, but there the changes are minor and can yet be overviewed.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	662 Still, conditional compilation of a code base creates variations
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	663 of the original program.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	664 More variations require more testing and maintenance work.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	665 .P
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	666 Two other options had only specified default configuration values:
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	667 .Sw --with-mts
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	668 defined the default transport service
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	669 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226 .
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	670 With
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	671 .Sw --with-smtpservers
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	672 default SMTP servers could be set
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	673 .Ci 128545e06224233b7e91fc4c83f8830252fe16c9 .
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	674 Both of them became irrelevant when the SMTP transport service was removed.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	675 In mmh, all messages are handed over to
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	676 .Pn sendmail
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	677 for transportation.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	678
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	679
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	680 .U3 "Backup Prefix
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	681 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	682 The backup prefix is the string that was prepended to message
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	683 filenames to tag them as deleted.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	684 By default it had been the comma character (`\fL,\fP').
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	685 In July 2000, Kimmo Suominen introduced
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	686 the configure option
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	687 .Sw --with-hash-backup
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	688 to change the default to the hash character `\f(CW#\fP'.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	689 This choice was probably personal preference, but,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	690 being related or not, words that start with the hash character
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	691 introduce a comment in the Unix shell.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	692 Thus, the command line
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	693 .Cl "rm #13 #15
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	694 calls
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	695 .Pn rm
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	696 without arguments because the first hash character starts a comment
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	697 that reaches until the end of the line.
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	698 To delete the backup files,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	699 .Cl "rm ./#13 ./#15"
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	700 needs to be used.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	701 Thus, using the hash as backup prefix may be seen as a precaution
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	702 against backup loss.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	703 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	704 First, I removed the configure option but added the profile entry
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	705 .Pe Backup-Prefix ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	706 which allowed to specify an arbitrary string as backup prefix
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	707 .Ci 6c40d481d661d532dd527eaf34cebb6d3f8ed086 .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	708 This change did not remove the choice but moved it to a location where
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	709 it suited better, in my eyes.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	710 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	711 Eventually however, the new trash folder concept
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	712 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	713 .Cf trash-folder )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	714 removed the need for the backup prefix completely.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	715 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	716 .Ci ca0b3e830b86700d9e5e31b1784de2bdcaf58fc5
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	717
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	718
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	719 .U3 "Editor and Pager
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	720 .Id editor-pager
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	721 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	722 The two configure options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	723 .CW --with-editor=EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	724 .CW --with-pager=PAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	725 were used to specify the default editor and pager at configure time.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	726 Doing so at configure time made sense in the eighties,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	727 when the set of available editors and pagers varied much across
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	728 different systems.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	729 Today, the situation is more homogeneous.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	730 The programs
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	731 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	732 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	733 .Pn more
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	734 can be expected to be available on every Unix system,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	735 as they are specified by POSIX since two decades.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	736 (The specifications for
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	737 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	738 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	739 .Pn more
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	740 appeared in
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	741 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	742 posix 1987
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	743 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	744 and,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	745 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	746 posix 1992
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	747 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	748 respectively.)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	749 As a first step, these two tools were hard-coded as defaults
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	750 .Ci 5d43a99db70c12a673028c7758c20cbe3e13ef5f .
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	751 Not changed were the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	752 .Pe editor
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	753 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	754 .Pe moreproc
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	755 profile entries, which allowed the user to override the system defaults.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	756 Later, the concept was reworked again to respect the standard
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	757 environment variables
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	758 .Ev VISUAL
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	759 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	760 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	761 if they are set.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	762 Today, mmh determines the editor to use in the following order,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	763 taking the first available and non-empty item
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	764 .Ci f85f4b7ae62e3d05a945dcd46ead51f0a2a89a9b :
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	765 .LI 1
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	766 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	767 .Ev MMHEDITOR
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	768 .LI 2
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	769 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	770 .Pe Editor
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	771 .LI 3
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	772 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	773 .Ev VISUAL
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	774 .LI 4
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	775 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	776 .Ev EDITOR
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	777 .LI 5
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	778 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	779 .Pn vi .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	780 .LP
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	781 The pager to use is determined in a similar order
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	782 .Ci 0c4214ea2aec6497d0d67b436bbee9bc1d225f1e :
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	783 .LI 1
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	784 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	785 .Ev MMHPAGER
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	786 .LI 2
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	787 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	788 .Pe Pager
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	789 (replaces
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	790 .Pe moreproc )
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	791 .LI 3
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	792 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	793 .Ev PAGER
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	794 .LI 4
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	795 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	796 .Pn more .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	797 .LP
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	798 By respecting the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	799 .Ev VISUAL /\c
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	800 .Ev EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	801 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	802 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	803 environment variables,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	804 the new behavior complies with the common style on Unix systems.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	805 It is more uniform and clearer for users.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	806
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	807
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	808 .U3 "ndbm
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	809 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	810 .Pn slocal
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	811 used to depend on the database library
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	812 .I ndbm .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	813 The database is used to store the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	814 .Hd Message-ID
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	815 header field values of all messages delivered.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	816 This enabled
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	817 .Pn slocal
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	818 to suppress delivering the same message to the same user twice.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	819 This features was enabled by the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	820 .Sw -suppressdup
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	821 switch.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	822 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	823 As a variety of versions of the database library exist,
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	824 .[
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	825 wolter unix incompat notes dbm
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	826 .]
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	827 complicated autoconf code was needed to detect them correctly.
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	828 Furthermore, the configure switches
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	829 .Sw --with-ndbm=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	830 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	831 .Sw --with-ndbmheader=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	832 were added to help with difficult setups that would
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	833 not be detected automatically or not correctly.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	834 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	835 By removing the suppress duplicates feature of
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	836 .Pn slocal ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	837 the dependency on
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	838 .I ndbm
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	839 vanished and 120 lines of complex autoconf code could be saved
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	840 .Ci ecd6d6a20cb7a1507e3a20d6c4cb3a1cf14c6bbf .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	841 The change removed functionality but that is considered minor to the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	842 improvement of dropping the dependency and the complex autoconf code.
225 d83ab437e3a6 Removed FIXMEs (XXX) in the sources, those that I won't fix. markus schnalke <meillo@marmaro.de> parents: 224 diff changeset	843
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	844
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	845 .U3 "MH-E Support
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	846 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	847 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	848 .Sw --disable-mhe
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	849 was removed when the MH-E support was reworked.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	850 MH-E is the Emacs front-end to MH.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	851 It requires MH to provide minor additional functions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	852 The
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	853 .Sw --disable-mhe
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	854 configure option had switched off these extensions.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	855 After removing the support for old versions of MH-E,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	856 only the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	857 .Sw -build
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	858 switches of
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	859 .Pn forw
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	860 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	861 .Pn repl
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	862 are left to be MH-E extensions.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	863 They are now always built in because they add little code and complexity.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	864 In consequence, the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	865 .Sw --disable-mhe
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	866 configure option was removed
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	867 .Ci a7ce7b4a580d77b6c2c4d980812beb589aa4c643 .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	868 Dropping the option also removed a variant of the code base
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	869 that would have needed to be tested.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	870 This change was undertaken in January 2012 in nmh and
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	871 thereafter merged into mmh.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	872
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	873
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	874 .U3 "Masquerading
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	875 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	876 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	877 .Sw --enable-masquerade
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	878 could take up to three arguments:
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	879 .Ar draft_from ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	880 .Ar mmailid ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	881 and
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	882 .Ar username_extension .
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	883 They activated different types of address masquerading.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	884 All of them were implemented in the SMTP-speaking
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	885 .Pn post
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	886 command.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	887 Address masquerading is an MTA's task and mmh does not cover
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	888 this field anymore.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	889 Hence, true masquerading needs to be implemented in the external MTA.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	890 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	891 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	892 .I mmailid
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	893 masquerading type is the oldest one of the three and the only one
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	894 available in the original MH.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	895 It provided a
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	896 .I username
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	897 to
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	898 .I fakeusername
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	899 mapping, based on the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	900 .Fn passwd 's
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	901 GECOS field.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	902 Nmh's man page
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	903 .Mp mh-tailor (5)
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	904 described the use case as being the following:
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	905 .QS
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	906 This is useful if you want the messages you send to always
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	907 appear to come from the name of an MTA alias rather than your
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	908 actual account name. For instance, many organizations set up
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	909 `First.Last' sendmail aliases for all users. If this is
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	910 the case, the GECOS field for each user should look like:
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	911 ``First [Middle] Last <First.Last>''
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	912 .QE
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	913 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	914 As mmh sends outgoing mail via the local MTA only,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	915 the best location to do such global rewrites is there.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	916 Besides, the MTA is conceptionally the right location because it
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	917 does the reverse mapping for incoming mail (aliasing), too.
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	918 Furthermore, masquerading set up there is readily available for all
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	919 mail software on the system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	920 Hence, mmailid masquerading was removed.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	921 .Ci 0836c8000ccb34b59410ef1c15b1b7feac70ce5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	922 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	923 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	924 .I username_extension
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	925 masquerading type did not replace the username but would append a suffix,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	926 specified by the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	927 .Ev USERNAME_EXTENSION
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	928 environment variable, to it.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	929 This provided support for the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	930 .I user-extension
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	931 feature of qmail
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	932 .[ [
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	933 sill qmail handbook
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	934 .], p. 141]
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	935 and the similar
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	936 .I "plussed user
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	937 processing of Sendmail.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	938 .[ [
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	939 sendmail costales
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	940 .], p. 476]
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	941 The decision to remove this username_extension masquerading
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	942 was motivated by the fact that
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	943 .Pn spost
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	944 had not supported it yet.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	945 Username extensions can be used in mmh, but less convenient.
225 d83ab437e3a6 Removed FIXMEs (XXX) in the sources, those that I won't fix. markus schnalke <meillo@marmaro.de> parents: 224 diff changeset	946 .\" XXX In the format file: %(getenv USERNAME_EXTENSION)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	947 .Ci 2abae0bfd0ad5bf898461e50aa4b466d641f23d9
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	948 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	949 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	950 .I draft_from
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	951 masquerading type instructed
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	952 .Pn post
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	953 to use the value of the
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	954 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	955 header field as SMTP envelope sender.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	956 Sender addresses could be replaced completely.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	957 Mmh offers a kind of masquerading similar in effect, but
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	958 with technical differences.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	959 As mmh does not transfer messages itself, the local MTA has final control
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	960 over the sender's address.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	961 Any masquerading mmh introduces may be reverted by the MTA.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	962 In times of pedantic spam checking, an MTA will take care to use
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	963 sensible envelope sender addresses to keep its own reputation up.
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	964 Nonetheless, the MUA can set the
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	965 .Hd From
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	966 header field and thereby propose a sender address to the MTA.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	967 The MTA may then decide to take that one or generate the canonical sender
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	968 address for use as envelope sender address.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	969 .Ci b14ea6073f77b4359aaf3fddd0e105989db9
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	970 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	971 In mmh, the MTA will always extract the recipient and sender from the
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	972 message header (\c
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	973 .Pn sendmail 's
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	974 .Sw -t
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	975 switch).
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	976 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	977 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	978 header field of the draft may be set arbitrary by the user.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	979 If it is missing, the canonical sender address will be generated by the MTA.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	980
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	981 .U3 "Remaining Options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	982 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	983 Two configure options remain in mmh.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	984 One is the locking method to use:
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	985 .Sw --with-locking=[dot\|fcntl\|flock\|lockf] .
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	986 The idea of removing all methods except the portable
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	987 .I "dot locking
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	988 and having that one as the default is appealing, but this change
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	989 requires deeper technical investigation into the topic.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	990 The other option,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	991 .Sw --enable-debug ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	992 compiles the programs with debugging symbols.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	993 This option is likely to stay.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	994
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	995
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	996
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	997
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	998 .H2 "Command Line Switches
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	999 .P
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1000 The command line switches of MH tools are similar in style to the
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1001 switches in the X Window System.
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1002 They consist of a single dash (`\fL-\fP') followed by a word.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1003 For example
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1004 .Cl -truncate .
212 9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1005 To ease typing, the word can be abbreviated, given the remaining
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1006 prefix is unambiguous.
212 9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1007 If no other switch starts with the letter `t', then any of
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1008 .Cl "-truncate" ,
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1009 .Cl "-trunc" ,
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1010 .Cl "-tr" ,
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1011 and
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1012 .Cl "-t
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1013 is equal.
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1014 As a result, switches can neither be grouped (as in
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1015 .Cl "ls -ltr" )
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1016 nor can switch arguments be appended directly to the switch (as in
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1017 .Cl "sendmail -q30m" ).
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1018 Many switches have negating counter-parts, which start with `no'.
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1019 For example
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1020 .Cl "-notruncate
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1021 inverts the
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1022 .Cl "-truncate
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1023 switch.
9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1024 They exist to override the effect of default switches in the profile.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1025 Every program in mmh has two generic switches:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1026 .Sw -help ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1027 to print a short message on how to use the program, and
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1028 .Sw -Version
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1029 (with capital `V'), to tell what version of mmh the program belongs to.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1030 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1031 Switches change the behavior of programs.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1032 Programs that do one thing in one way require no switches.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1033 In most cases, doing something in exactly one way is too limiting.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1034 If one task should be accomplished in various ways,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1035 switches are a good approach to alter the behavior of a program.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1036 Changing the behavior of programs provides flexibility and customization
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1037 to users, but at the same time it complicates the code,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1038 the documentation, and the usage of the program.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1039 Therefore, the number of switches should be kept small.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1040 A small set of well-chosen switches is best.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1041 Usually, the number of switches increases over time.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1042 Already in 1985, Rose and Romine have identified this as a major
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1043 problem of MH:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1044 .[ [
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1045 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1046 .], p. 12]
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1047 .QS
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1048 A complaint often heard about systems which undergo substantial development
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1049 by many people over a number of years, is that more and more options are
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1050 introduced which add little to the functionality but greatly increase the
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1051 amount of information a user needs to know in order to get useful work done.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1052 This is usually referred to as creeping featurism.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1053 .QP
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1054 Unfortunately MH, having undergone six years of off-and-on development by
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1055 ten or so well-meaning programmers (the present authors included),
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1056 suffers mightily from this.
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1057 .QE
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1058 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1059 Being reluctant to adding new switches (or \fIoptions\fP,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1060 as Rose and Romine call them) is one part of a counter-action,
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1061 the other part is removing hardly used switches.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1062 Nmh's tools have lots of switches already implemented.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1063 Hence, cleaning up by removing some of them was the more important part
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1064 of the counter-action.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1065 Removing existing functionality is always difficult because it
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1066 breaks programs that use these functions.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1067 Also, for every obsolete feature, there'll always be someone who still
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1068 uses it and thus opposes its removal.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1069 This puts the developer into the position,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1070 where sensible improvements to style are regarded as destructive acts.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1071 Yet, living with the featurism is far worse, in my eyes, because
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1072 future needs will demand adding further features,
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1073 worsening the situation more and more.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1074 Rose and Romine added in a footnote,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1075 ``[...]
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1076 .Pn send
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1077 will no doubt acquire an endless number of switches in the years to come''
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1078 .[ [
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1079 rose romine real work
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1080 .], p. 12].
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1081 Although clearly humorous, the comment points to the nature of the problem.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1082 Refusing to add any new switches would encounter the problem at its root,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1083 but this is not practical.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1084 New needs will require new switches and it would be unwise to block
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1085 them strictly.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1086 Nevertheless, removing obsolete switches still is an effective approach
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1087 to deal with the problem.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1088 Working on an experimental branch without an established user base,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1089 eased my work because I did not offend users when I removed existing
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1090 functions.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1091 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1092 Rose and Romine counted 24 visible and 9 more hidden switches for
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1093 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1094 In nmh, they increased up to 32 visible and 12 hidden ones.
182 764738b17b74 Updated the numbers of cmdline switches to recent mmh changes. markus schnalke <meillo@marmaro.de> parents: 181 diff changeset	1095 At the time of writing, no more than 4 visible switches and 1 hidden switch
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1096 have remained in mmh's
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1097 .Pn send .
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1098 These numbers include the two generic switches,
182 764738b17b74 Updated the numbers of cmdline switches to recent mmh changes. markus schnalke <meillo@marmaro.de> parents: 181 diff changeset	1099 .Sw -help
764738b17b74 Updated the numbers of cmdline switches to recent mmh changes. markus schnalke <meillo@marmaro.de> parents: 181 diff changeset	1100 and
183 4c5055a0e981 Explained `hidden switches'. markus schnalke <meillo@marmaro.de> parents: 182 diff changeset	1101 .Sw -Version .
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1102 .P
183 4c5055a0e981 Explained `hidden switches'. markus schnalke <meillo@marmaro.de> parents: 182 diff changeset	1103 Hidden switches are ones not documented.
4c5055a0e981 Explained `hidden switches'. markus schnalke <meillo@marmaro.de> parents: 182 diff changeset	1104 In mmh, 12 tools have hidden switches.
4c5055a0e981 Explained `hidden switches'. markus schnalke <meillo@marmaro.de> parents: 182 diff changeset	1105 9 of them are
4c5055a0e981 Explained `hidden switches'. markus schnalke <meillo@marmaro.de> parents: 182 diff changeset	1106 .Sw -debug
4c5055a0e981 Explained `hidden switches'. markus schnalke <meillo@marmaro.de> parents: 182 diff changeset	1107 switches, the other 6 provide special interfaces for internal use.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1108 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1109 The following figure displays the number of switches for each of the tools
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1110 that is available in both nmh and mmh.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1111 The tools are sorted by the number of switches they had in nmh.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1112 Both visible and hidden switches were counted,
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1113 but not the generic help and version switches.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1114 Whereas in the beginning of the project, the average tool had 11 switches,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1115 now it has no more than 5 \(en only half as many.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1116 If the `no' switches and similar inverse variant are folded onto
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1117 their counter-parts, the average tool had 8 switches in pre-mmh times and
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1118 has 4 now.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1119 The total number of functional switches in mmh dropped from 465
182 764738b17b74 Updated the numbers of cmdline switches to recent mmh changes. markus schnalke <meillo@marmaro.de> parents: 181 diff changeset	1120 to 233.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1121
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1122 .KS
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1123 .in 1c
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1124 .so input/switches.grap
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1125 .KE
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1126
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1127 .P
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1128 A part of the switches vanished after functions were removed.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1129 This was the case for network mail transfer, for instance.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1130 Sometimes, however, the work flow was the other way:
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1131 I looked through the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1132 .Mp mh-chart (7)
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1133 man page to identify the tools with apparently too many switches.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1134 Then I considered the benefit of each switch by examining
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1135 the tool's man page and source code, aided by literature research
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1136 and testing.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1137
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1138
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1139 .U3 "Draft Folder Facility
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1140 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1141 A change early in the project was the complete transition from
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1142 the single draft message to the draft folder facility
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1143 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1144 (cf. Sec.
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1145 .Cf draft-folder ).
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1146 The draft folder facility was introduced in the mid-eighties, when
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1147 Rose and Romine called it a ``relatively new feature''.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1148 .[
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1149 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1150 .]
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1151 Since then, the facility was included, inactive by default.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1152 By making it permanently active and by related rework of the tools, the
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1153 .Sw -[no]draftfolder ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1154 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1155 .Sw -draftmessage
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1156 switches could be removed from
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1157 .Pn comp ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1158 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1159 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1160 .Pn dist ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1161 .Pn whatnow ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1162 and
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1163 .Pn send
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1164 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860 .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1165 The only flexibility lost with this change is having multiple
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1166 draft folders within one profile.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1167 I consider this a theoretical problem only.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1168 At the same time, the
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1169 .Sw -draft
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1170 switch of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1171 .Pn anno ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1172 .Pn refile ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1173 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1174 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1175 was removed.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1176 The special treatment of \fIthe\fP draft message became irrelevant after
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1177 the rework of the draft system
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1178 (cf. Sec.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1179 .Cf draft-folder ).
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1180
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1181
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1182 .U3 "In Place Editing
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1183 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1184 .Pn anno
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1185 had the switches
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1186 .Sw -[no]inplace
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1187 to either annotate the message in place and thus preserve hard links,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1188 or annotate a copy to replace the original message.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1189 The latter approach broke hard links.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1190 Following the assumption that linked messages should truly be the
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1191 same message and annotating it should not break the link, the
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1192 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1193 switches were removed and the previous default
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1194 .Sw -inplace
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1195 was made the definitive behavior
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1196 .Ci c8195849d2e366c569271abb0f5f60f4ebf0b4d0 .
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1197 The
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1198 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1199 switches of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1200 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1201 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1202 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1203 .Pn dist
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1204 could be removed, as well, as they were simply passed through to
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1205 .Pn anno .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1206 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1207 .Pn burst
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1208 also had
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1209 .Sw -[no]inplace
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1210 switches, but with a different meaning.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1211 With
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1212 .Sw -inplace ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1213 the digest had been replaced by the table of contents (i.e. the
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1214 introduction text) and the burst messages were placed right
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1215 after this message, renumbering all following messages.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1216 Also, any trailing text of the digest was lost, though,
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1217 in practice, it usually consists of an end-of-digest marker only.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1218 Nonetheless, this behavior appeared less elegant than the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1219 .Sw -noinplace
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1220 behavior, which already had been the default.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1221 Nmh's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1222 .Mp burst (1)
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1223 man page reads:
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1224 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1225 If
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1226 .Sw -noinplace
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1227 is given, each digest is preserved, no table
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1228 of contents is produced, and the messages contained within
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1229 the digest are placed at the end of the folder. Other messages
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1230 are not tampered with in any way.
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1231 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1232 .LP
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1233 The decision to drop the
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1234 .Sw -inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1235 behavior was supported by the code complexity and the possible data loss
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1236 it caused.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1237 .Sw -noinplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1238 was chosen to be the definitive behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1239 .Ci 68a686adeb39223a5e1ad35e4a24890ec053679d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1240
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1241
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1242 .U3 "Forms and Format Strings
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1243 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1244 Historically, the tools that had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1245 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1246 switches to supply a form file had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1247 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1248 switches as well to supply the contents of a form file as a string
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1249 on the command line directly.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1250 In consequence, the following two lines equaled:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1251 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1252 scan -form scan.mailx
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1253 scan -format "`cat /path/to/scan.mailx`"
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1254 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1255 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1256 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1257 switches were dropped in favor for extending the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1258 .Sw -form
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1259 switches
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1260 .Ci f51956be123db66b00138f80464d06f030dbb88d .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1261 If their argument starts with an equal sign (`\fL=\fP'),
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1262 then the rest of the argument is taken as a format string,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1263 otherwise the arguments is treated as the name of a format file.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1264 Thus, now the following two lines equal:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1265 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1266 scan -form scan.mailx
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1267 scan -form "=`cat /path/to/scan.mailx`"
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1268 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1269 This rework removed the prefix collision between
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1270 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1271 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1272 .Sw -format .
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1273 Typing `\fL-fo\fP' is sufficient to specify form file or format string.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1274 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1275 The different meaning of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1276 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1277 for
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1278 .Pn forw
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1279 and
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1280 .Pn repl
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1281 was removed in mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1282 .Pn forw
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1283 was completely switched to MIME-type forwarding, thus removing the
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1284 .Sw -[no]format
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1285 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1286 For
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1287 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1288 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1289 .Sw -[no]format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1290 switches were reworked to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1291 .Sw -[no]filter
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1292 switches
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1293 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1294 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1295 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1296 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1297 .Pn send
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1298 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1299 .Pn post ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1300 which had a third meaning, were removed likewise
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1301 .Ci f3cb7cde0e6f10451b6848678d95860d512224b9 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1302 Eventually, the ambiguity of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1303 .Sw -format
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1304 switches is resolved by not having such switches anymore in mmh.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1305
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1306
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1307 .U3 "MIME Tools
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1308 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1309 The MIME tools, which once were part of
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1310 .Pn mhn
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1311 (whatever that stood for),
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1312 had several switches that added little practical value to the programs.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1313 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1314 .Sw -[no]realsize
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1315 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1316 .Pn mhbuild
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1317 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1318 .Pn mhlist
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1319 were removed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1320 .Ci 8d8f1c3abc586c005c904e52c4adbfe694d2201c .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1321 Real size calculations are done always now because nmh's
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1322 .Mp mhbuild (1)
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1323 man page states that
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1324 ``This provides an accurate count at the expense of a small delay''
228 a1468cf505fd Spellchecked. markus schnalke <meillo@marmaro.de> parents: 227 diff changeset	1325 with the small delay not being noticeable on modern systems.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1326 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1327 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1328 .Sw -[no]check
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1329 switches were removed together with the support for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1330 .Hd Content-MD5
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1331 header fields [RFC\\|1864]
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1332 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1333 .Cf content-md5 )
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1334 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1335 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1336 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1337 .Sw -[no]ebcdicsafe
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1338 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1339 .Sw -[no]rfc934mode
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1340 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1341 .Pn mhbuild
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1342 were removed because they are considered obsolete
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1343 .Ci 01a3480928da485b4d6109d36d751dfa71799d58
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1344 .Ci 3363e2624dce0eb8164cf8b3f1ab385c8ff72e88 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1345 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1346 Content caching of external MIME parts, activated with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1347 .Sw -rcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1348 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1349 .Sw -wcache
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1350 switches was completely removed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1351 .Ci d1fefd9f614e4dc3cda16da6c69133c1b2005269 .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1352 External MIME parts are rare today, having a caching facility
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1353 for them appears to be unnecessary.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1354 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1355 In pre-MIME times,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1356 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1357 had covered many tasks that are part of MIME handling today.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1358 Therefore,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1359 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1360 could be simplified to a large extend, reducing the number of its
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1361 switches from 21 to 6
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1362 .Ci 350ad6d3542a07639213cf2a4fe524e829c1e7b6
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1363 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1364
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1365
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1366
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1367
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1368 .U3 "Header Printing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1369 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1370 .Pn folder 's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1371 data output is self-explaining enough that
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1372 displaying the header line makes little sense.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1373 Hence, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1374 .Sw -[no]header
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1375 switch was removed and headers are never printed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1376 .Ci 601cc73d1fa05ce96faa728f036d6c51b91701c7 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1377 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1378 In
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1379 .Pn mhlist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1380 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1381 .Sw -[no]header
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1382 switches were removed, as well
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1383 .Ci b24f96523aaf60e44e04a3ffb1d22e69a13a602f .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1384 In this case, the headers are printed always because the output
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1385 is not self-explaining.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1386 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1387 .Pn scan
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1388 also had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1389 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1390 switches.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1391 Printing this header had been sensible until the introduction of
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1392 format strings made it impossible to display column headings.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1393 Only the folder name and the current date remained to be printed.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1394 As this information can be perfectly generated with
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1395 .Pn folder
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1396 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1397 .Pn date ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1398 the switches were removed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1399 .Ci c477dc5d1d03fa6d9a8ab3dd3508c63cbddc044e .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1400 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1401 By removing all
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1402 .Sw -header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1403 switches, the collision with
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1404 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1405 on the first two letters was resolved.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1406 Currently,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1407 .Sw -h
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1408 evaluates to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1409 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1410 for all tools of mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1411
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1412
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1413 .U3 "Suppressing Edits or the Invocation of the WhatNow Shell
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1414 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1415 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1416 .Sw -noedit
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1417 switch of
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1418 .Pn comp ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1419 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1420 .Pn forw ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1421 .Pn dist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1422 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1423 .Pn whatnow
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1424 was removed and replaced by specifying
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1425 .Sw -editor
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1426 with an empty argument
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1427 .Ci 75fca31a5b9d5c1a99c74ab14c94438d8852fba9 .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1428 (Specifying
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1429 .Cl "-editor /bin/true
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1430 is nearly the same. It differs only in setting the previous editor.)
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1431 .P
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1432 The more important change is the removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1433 .Sw -nowhatnowproc
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1434 switch
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1435 .Ci ee4f43cf2ef0084ec698e4e87159a94c01940622 .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1436 This switch had once introduced an awkward behavior,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1437 as explained in nmh's man page for
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1438 .Mp comp (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1439 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1440 The
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1441 .Sw -editor
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1442 .Ar editor
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1443 switch indicates the editor to use for
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1444 the initial edit. Upon exiting from the editor,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1445 .Pn comp
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1446 will invoke the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1447 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1448 program. See
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1449 .Mp whatnow (1)
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1450 for a discussion of available options.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1451 The invocation of this program can be
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1452 inhibited by using the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1453 .Sw -nowhatnowproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1454 switch. (In truth of fact, it is the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1455 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1456 program which starts the initial edit.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1457 Hence,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1458 .Sw -nowhatnowproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1459 will prevent any edit from occurring.)
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1460 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1461 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1462 Effectively, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1463 .Sw -nowhatnowproc
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1464 switch caused only only a draft message to be created.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1465 As
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1466 .Cl "-whatnowproc /bin/true
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1467 does the same, the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1468 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1469 switch was removed for being redundant.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1470
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1471
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1472
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1473 .U3 "Various
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1474 .BU
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1475 With the removal of MMDF maildrop format support,
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1476 .Pn packf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1477 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1478 .Pn rcvpack
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1479 no longer needed their
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1480 .Sw -mbox
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1481 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1482 .Sw -mmdf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1483 switches.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1484 The behavior of
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1485 .Sw -mbox
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1486 is the sole behavior now
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1487 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0 .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	1488 Further rework in both tools made the
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1489 .Sw -file
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1490 switch unnecessary
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1491 .Ci ca1023716d4c2ab890696f3e41fa0d94267a940e .
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1492
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1493 .BU
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1494 Mmh's tools do no longer clear the screen (\c
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1495 .Pn scan 's
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1496 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1497 .Pn mhl 's
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1498 .Sw -[no]clear
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1499 switches
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1500 .Ci e57b17343dcb3ff373ef4dd089fbe778f0c7c270
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1501 .Ci 943765e7ac5693ae177fd8d2b5a2440e53ce816e ).
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1502 Neither does
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1503 .Pn mhl
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1504 ring the bell (\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1505 .Sw -[no]bell
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1506 .Ci e11983f44e59d8de236affa5b0d0d3067c192e24 )
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1507 nor does it page the output itself (\c
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1508 .Sw -length
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1509 .Ci 5b9d883db0318ed2b84bb82dee880d7381f99188 ).
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1510 Generally, the pager to use is no longer specified with the
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1511 .Sw -[no]moreproc
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1512 command line switches for
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1513 .Pn mhl
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1514 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1515 .Pn show /\c
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1516 .Pn mhshow
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1517 .Ci 39e87a75b5c2d3572ec72e717720b44af291e88a .
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1518
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1519 .BU
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1520 In order to avoid prefix collisions among switch names, the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1521 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1522 switch was renamed to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1523 .Sw -Version
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1524 (with capital `V')
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1525 .Ci 32b2354dbaf4bf934936eb5b102a4a3d2fdd209a .
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1526 Every program has the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1527 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1528 switch but its first three letters collided with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1529 .Sw -verbose
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1530 switch, present in many programs.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1531 The rename solved this problem once for all.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1532 Although this rename breaks a basic interface, having the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1533 .Sw -V
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1534 abbreviation to display the version information, isn't all too bad.
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1535
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1536 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1537 .Sw -[no]preserve
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1538 of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1539 .Pn refile
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1540 was removed
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1541 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1542 because what use was it anyway?
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1543 Quoting nmh's man page
165 ea6eec1722d1 Improvement by Boris Kraut. markus schnalke <meillo@marmaro.de> parents: 164 diff changeset	1544 .Mp refile (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1545 .QS
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1546 Normally when a message is refiled, for each destination
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1547 folder it is assigned the number which is one above the current
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1548 highest message number in that folder. Use of the
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1549 .Sw -preserv
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1550 [sic!] switch will override this message renaming, and try
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1551 to preserve the number of the message. If a conflict for a
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1552 particular folder occurs when using the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1553 .Sw -preserve
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1554 switch, then
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1555 .Pn refile
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1556 will use the next available message number which
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1557 is above the message number you wish to preserve.
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1558 .QE
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1559
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1560 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1561 The removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1562 .Sw -[no]reverse
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1563 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1564 .Pn scan
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1565 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1566 is a bug fix.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1567 This is supported by the comments
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1568 ``\-[no]reverse under #ifdef BERK (I really HATE this)''
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1569 by Rose and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1570 ``Lists messages in reverse order with the `\-reverse' switch.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1571 This should be considered a bug'' by Romine in the changelogs.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1572 The question remains why neither Rose nor Romine have fixed this
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1573 bug in the eighties when they wrote these comments.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1574
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1575
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1576
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1577
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1578
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1579
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1580
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	1581 .\" --------------------------------------------------------------
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	1582 .H1 "Modernizing
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1583 .P
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1584 In the more than thirty years of MH's existence, its code base was
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1585 increasingly extended.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1586 New features entered the project and became alternatives to the
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1587 existing behavior.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1588 Relics from several decades have gathered in the code base
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1589 but seldom obsolete features were dropped.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1590 This section describes the removing of old code
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1591 and the modernizing of the default setup.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1592 It focuses on the functional aspect only;
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1593 the non-functional aspects of code style are discussed in Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1594 .Cf code-style .
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1595
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1596
212 9317d789cef9 Various improvements and rework. markus schnalke <meillo@marmaro.de> parents: 200 diff changeset	1597 .H2 "Code Relics
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1598 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1599 My position regarding the removal of obsolete code
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1600 is much more revolutional than the nmh community appreciates.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1601 Working on an experimental version, I was able to quickly drop
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1602 functionality that I considered ancient.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1603 The need for consensus with peers would have slowed this process down.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1604 Without the need to justify my decisions, I was able to rush forward.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1605 .P
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1606 In December 2011, Paul Vixie motivated the nmh developers to just
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1607 do the work:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1608 .[
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1609 paul vixie edginess nmh-workers
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1610 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1611 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1612 let's stop walking on egg shells with this code base. there's no need to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1613 discuss whether to keep using vfork, just note in [sic!] passing, [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1614 we don't need a separate branch for removing vmh
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1615 or ridding ourselves of #ifdef's or removing posix replacement functions
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1616 or depending on pure ansi/posix ``libc''.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1617 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1618 these things should each be a day or two of work and the ``main branch''
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1619 should just be modern. [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1620 let's push forward, aggressively.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1621 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1622 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1623 I did so already in the months before.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1624 I pushed forward.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1625 I simply dropped the cruft.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1626 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1627 The decision to drop a feature was based on literature research and
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1628 careful thinking, but whether having had contact with this particular
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1629 feature within my own computer life served as a rule of thumb.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1630 I explained my reasons in the commit messages
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1631 in the version control system.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1632 Hence, others can comprehend my view and argue for undoing the change
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1633 if I have missed an important aspect.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1634 I was quick in dropping parts.
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	1635 I rather include falsely dropped parts again, than going at a slower pace.
b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	1636 Mmh is experimental work; it requires tough decisions.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1637
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1638
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1639 .U3 "Process Forking
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	1640 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1641 Being a tool chest, MH creates many processes.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1642 In earlier times
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1643 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1644 had been an expensive system call, because the process's image needed
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1645 to be completely duplicated at once.
200 c299ed65d015 Spell checked. markus schnalke <meillo@marmaro.de> parents: 199 diff changeset	1646 This expensive work was especially unnecessary in the commonly occurring
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1647 case wherein the image is replaced by a call to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1648 .Fu exec()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1649 right after having forked the child process.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1650 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1651 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1652 system call was invented to speed up this particular case.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1653 It completely omits the duplication of the image.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1654 On old systems this resulted in significant speed ups.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1655 Therefore MH used
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1656 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1657 whenever possible.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1658 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1659 Modern memory management units support copy-on-write semantics, which make
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1660 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1661 almost as fast as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1662 .Fu vfork() .
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1663 The man page of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1664 .Mp vfork (2)
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1665 in FreeBSD 8.0 states:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1666 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1667 This system call will be eliminated when proper system sharing mechanisms
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1668 are implemented. Users should not depend on the memory sharing semantics
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1669 of vfork() as it will, in that case, be made synonymous to fork(2).
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1670 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1671 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1672 Vixie supports the removal with the note that ``the last
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1673 system on which fork was so slow that an mh user would notice it, was
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1674 Eunice. that was 1987''.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1675 .[
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1676 nmh-workers vixie edginess
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1677 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1678 I replaced all calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1679 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1680 with calls to
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1681 .Fu fork()
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1682 .Ci 40821f5c1316e9205a08375e7075909cc9968e7d .
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1683 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1684 Related to the costs of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1685 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1686 is the probability of its success.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1687 In the eighties, on heavy loaded systems, calls to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1688 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1689 were prone to failure.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1690 Hence, many of the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1691 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1692 calls in the code were wrapped into loops to retry the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1693 .Fu fork()
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1694 several times, to increase the chances to succeed eventually.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1695 On modern systems, a failing
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1696 .Fu fork()
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1697 call is unusual.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1698 Hence, in the rare case when
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1699 .Fu fork()
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1700 fails, mmh programs simply abort
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1701 .Ci 5fbf37ee68e018998ada61eeab73e035b26834b6 .
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1702
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1703
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1704 .U3 "Header Fields
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1705 .BU
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1706 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1707 .Hd Encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1708 header field was introduced by RFC\\|822,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1709 but already marked as legacy in RFC\\|2822.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1710 Today, OpenPGP provides the basis for standardized exchange of encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1711 messages [RFC\\|4880, RFC\\|3156].
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1712 Hence, the support for
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1713 .Hd Encrypted
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1714 header fields is removed in mmh
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1715 .Ci 064527f7b57ab050e5af13e15ad99aeeab125857 .
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1716 .BU
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1717 The native support for
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1718 .Hd Face
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1719 header fields has been removed, as well
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1720 .Ci 8e5be81f784682822f5e868c1bf3c8624682bd23 .
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1721 This feature is similar to the
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1722 .Hd X-Face
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1723 header field in its intent,
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1724 but takes a different approach to store the image.
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1725 Instead of encoding the image data directly into the header field,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1726 it contains the hostname and UDP port where the image
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1727 date can be retrieved.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1728 There is even a third Face system,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1729 which is the successor of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1730 .Hd X-Face ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1731 although it re-uses the
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1732 .Hd Face
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1733 header field name.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1734 It was invented in 2005 and supports colored PNG images.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1735 None of the Face systems described here is popular today.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1736 Hence, mmh has no direct support for them.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1737 .BU
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1738 .Id content-md5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1739 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1740 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1741 header field was introduced by RFC\\|1864.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1742 It provides detection of data corruption during the transfer.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1743 But it can not ensure verbatim end-to-end delivery of the contents
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1744 [RFC\\|1864].
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1745 The proper approach to verify content integrity in an
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	1746 end-to-end relationship is the use of digital signatures [RFC\\|4880].
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1747 On the other hand, transfer protocols should detect corruption during
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1748 the transmission.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1749 The TCP includes a checksum field therefore.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1750 These two approaches in combinations render the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1751 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1752 header field superfluous.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1753 Not a single one out of 4\\|200 messages from two decades
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1754 in the nmh-workers mailing list archive
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1755 .[
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1756 nmh-workers mailing list archive website
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1757 .]
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1758 contains a
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1759 .Hd Content-MD5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1760 header field.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1761 Neither did any of the 60\\|000 messages in my personal mail storage.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1762 Removing the support for this header field
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1763 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda ,
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1764 removed the last place where MD5 computation was needed.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1765 Hence, the MD5 code could be removed as well.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1766 Over 500 lines of code vanished by this one change.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1767
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1768
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1769 .U3 "MMDF maildrop support
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1770 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1771 This type of maildrop format is conceptionally similar to the mbox format,
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1772 but uses a different message delimiter (`\fL\\1\\1\\1\\1\fP',
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1773 commonly written as `\fL^A^A^A^A\fP', instead of `\fLFrom\0\fP').
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1774 Mbox is the de-facto standard maildrop format on Unix,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1775 whereas the MMDF maildrop format is now forgotten.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1776 Mbox remains as the only packed mailbox format, supported in mmh.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1777 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1778 The simplifications within the code were moderate.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1779 Mainly, the reading and writing of MMDF mailbox files was removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1780 But also, switches of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1781 .Pn packf
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1782 and
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1783 .Pn rcvpack
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1784 could be removed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1785 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0 .
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1786 In the message parsing function
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1787 .Fn sbr/m_getfld.c ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1788 knowledge of MMDF packed mail boxes was removed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1789 .Ci 684ec30d81e1223a282764452f4902ed4ad1c754 .
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1790 Further code structure simplifications may be possible there,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1791 because only one single packed mailbox format is left to be supported.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1792 I have not worked on them yet because
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1793 .Fu m_getfld()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1794 is heavily optimized and thus dangerous to touch.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1795 The risk of damaging the intricate workings of the optimized code is
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1796 too high.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1797
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1798
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1799 .U3 "Prompter's Control Keys
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1800 .P
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1801 The program
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1802 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1803 queries the user to fill in a message form.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1804 When used as
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1805 .Cl "comp -editor prompter" ,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1806 the resulting behavior is similar to
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1807 .Pn mailx .
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	1808 Apparently,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1809 .Pn prompter
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	1810 had not been touched lately.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1811 Otherwise it's hardly explainable why it
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1812 still offered the switches
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1813 .Sw -erase
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1814 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1815 and
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1816 .Sw -kill
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1817 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1818 to name the characters for command line editing.
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1819 The times when this had been necessary are long time gone.
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1820 Today these things work out-of-the-box, and if not, are configured
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1821 with the standard tool
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1822 .Pn stty .
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1823 The switches are removed now
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1824 .Ci 0bd9750710cdbab80cfb4036dd87af20afe1552f .
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1825
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1826
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1827 .U3 "Hardcopy Terminal Support
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1828 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1829 More of a funny anecdote is a check for being connected to a
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1830 hardcopy terminal.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1831 It remained in the code until spring 2012, when I finally removed it
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1832 .Ci b7764c4a6b71d37918a97594d866258f154017ca .
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1833 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1834 The check only prevented a pager to be placed between the printing
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1835 program (\c
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1836 .Pn mhl )
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1837 and the terminal.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1838 In nmh, this could have been ensured statically with the
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1839 .Sw -nomoreproc
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1840 at the command line, too.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	1841 In mmh, setting the profile entry
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1842 .Pe Pager
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1843 or the environment variable
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1844 .Ev PAGER
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1845 to
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1846 .Pn cat
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1847 is sufficient.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1848
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1849
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1850
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1851
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1852 .H2 "Attachments
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	1853 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1854 The mind model of email attachments is unrelated to MIME.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1855 Although the MIME RFCs [RFC\\|2045\(en2049] define the technical
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1856 requirements for having attachments, they do not mention the term.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1857 Instead of attachments, MIME talks about ``multi-part message bodies''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1858 [RFC\\|2045], a more general concept.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1859 Multi-part messages are messages
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1860 ``in which one or more different
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1861 sets of data are combined in a single body''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1862 [RFC\\|2046].
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1863 MIME keeps its descriptions generic;
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1864 it does not imply specific usage models.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1865 Today, one usage model is prevalent: attachments.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1866 The idea is having a main text document with files of arbitrary kind
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1867 attached to it.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1868 In MIME terms, this is a multi-part message having a text part first
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1869 and parts of arbitrary type following.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1870 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1871 MH's MIME support is a direct implementation of the RFCs.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1872 The perception of the topic described in the RFCs is clearly visible
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1873 in MH's implementation.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1874 As a result,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1875 MH had all the MIME features but no idea of attachments.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	1876 But users do not need all the MIME features,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1877 they want convenient attachment handling.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1878
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1879
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1880 .U3 "Composing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1881 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1882 In order to improve the situation on the message composing side,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1883 Jon Steinhart had added an attachment system to nmh in 2002
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1884 .Ci 7480dbc14bc90f2d872d434205c0784704213252 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1885 In the file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1886 .Fn docs/README-ATTACHMENTS ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1887 he described his motivation to do so:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1888 .QS
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1889 Although nmh contains the necessary functionality for MIME message
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1890 handing [sic!], the interface to this functionality is pretty obtuse.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1891 There's no way that I'm ever going to convince my partner to write
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1892 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1893 composition files!
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1894 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1895 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1896 With this change, the mind model of attachments entered nmh.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1897 In the same document:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1898 .QS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1899 These changes simplify the task of managing attachments on draft files.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1900 They allow attachments to be added, listed, and deleted.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1901 MIME messages are automatically created when drafts with attachments
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1902 are sent.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1903 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1904 .LP
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1905 Unfortunately, the attachment system, like every new facilities in nmh,
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1906 was inactive by default.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1907 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1908 During my time in Argentina, I tried to improve the attachment system.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1909 But, after long discussions my patch died as a proposal on the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1910 mailing list because of great opposition in the nmh community.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1911 .[
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1912 nmh-workers attachment proposal
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1913 .]
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1914 In January 2012, I extended the patch and applied it to mmh
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1915 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1 .
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1916 In mmh, the attachment system is active by default.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1917 Instead of command line switches, the
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1918 .Pe Attachment-Header
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1919 profile entry is used to specify
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1920 the name of the attachment header field.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1921 It is pre-defined to
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1922 .Hd Attach .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1923 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1924 To add an attachment to a draft, a header line needs to be added:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1925 .VS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1926 To: bob
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1927 Subject: The file you wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1928 Attach: /path/to/the/file-bob-wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1929 --------
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1930 Here it is.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1931 VE
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1932 The header field can be added to the draft manually in the editor,
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1933 or by using the `attach' command at the WhatNow prompt, or
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1934 non-interactively with
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1935 .Pn anno :
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1936 .VS
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1937 anno -append -nodate -component Attach -text /path/to/attachment
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1938 VE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1939 Drafts with attachment headers are converted to MIME automatically by
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1940 .Pn send .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1941 The conversion to MIME is invisible to the user.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1942 The draft stored in the draft folder is always in source form with
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1943 attachment headers.
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	1944 If the MIMEification fails (e.g. because the file to attach
b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	1945 is not accessible) the original draft is not changed.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1946 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1947 The attachment system handles the forwarding of messages, too.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	1948 If the attachment header value starts with a plus character (`\fL+\fP'),
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1949 like in
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1950 .Cl "Attach: +bob 30 42" ,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1951 the given messages in the specified folder will be attached.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1952 This allowed to simplify
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1953 .Pn forw
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1954 .Ci f41f04cf4ceca7355232cf7413e59afafccc9550 .
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1955 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1956 Closely related to attachments is non-ASCII text content,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1957 because it requires MIME as well.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1958 In nmh, the user needed to call `mime' at the WhatNow prompt
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1959 to have the draft converted to MIME.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1960 This was necessary whenever the draft contained non-ASCII characters.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1961 If the user did not call `mime', a broken message would be sent.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1962 Therefore, the
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1963 .Pe automimeproc
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1964 profile entry could be specified to have the `mime' command invoked
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1965 automatically each time.
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	1966 Unfortunately, this approach conflicted with the attachment system
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1967 because the draft would already be in MIME format at the time
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1968 when the attachment system wanted to MIMEify it.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1969 To use nmh's attachment system, `mime' must not be called at the
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1970 WhatNow prompt and
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1971 .Pe automimeproc
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1972 must not be set in the profile.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1973 But then the case of non-ASCII text without attachment headers was
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1974 not caught.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1975 All in all, the solution was complex and irritating.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1976 My patch from December 2010
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1977 .[
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1978 nmh-workers attachment proposal
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1979 .]
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1980 would have simplified the situation.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1981 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1982 Mmh's current solution is even more elaborate.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1983 Any necessary MIMEification is done automatically.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1984 There is no `mime' command at the WhatNow prompt anymore.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1985 The draft will be converted automatically to MIME when either an
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1986 attachment header or non-ASCII text is present.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	1987 Furthermore, the hash character (`\fL#\fP') is not special any more
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1988 at line beginnings in the draft message.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1989 Users need not concern themselves with the whole topic at all.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1990 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1991 Although the new approach does not anymore support arbitrary MIME
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1992 compositions directly, the full power of
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1993 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1994 can still be accessed.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1995 Given no attachment headers are included, users can create
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1996 .Pn mhbuild
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1997 composition drafts like in nmh.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	1998 Then, at the WhatNow prompt, they can invoke
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1999 .Cl "edit mhbuild
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2000 to convert the draft to MIME.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2001 Because the resulting draft neither contains non-ASCII characters
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2002 nor has it attachment headers, the attachment system will not touch it.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2003 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2004 The approach taken in mmh is tailored towards today's most common case:
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2005 a text part, possibly with attachments.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2006 This case was simplified.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2007
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2008
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2009 .U3 "MIME Type Guessing
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2010 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2011 From the programmer's point of view, the use of
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2012 .Pn mhbuild
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2013 composition drafts had one notable advantage over attachment headers:
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2014 The user provides the appropriate MIME types for files to include.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2015 The new attachment system needs to find out the correct MIME type itself.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2016 This is a difficult task.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2017 Determining the correct MIME type of content is partly mechanical,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2018 partly intelligent work.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2019 Forcing the user to find out the correct MIME type,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2020 forces him to do partly mechanical work.
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	2021 Letting the computer do the work can lead to bad choices for difficult
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2022 content.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2023 For mmh, the latter option was chosen to spare the user the work
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2024 .Ci 3baec236a39c5c89a9bda8dbd988d643a21decc6 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2025 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2026 Determining the MIME type by the suffix of the file name is a dumb
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2027 approach, yet it is simple to implement and provides good results
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2028 for the common cases.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2029 If no MIME type can be determined, text content is sent as `text/plain',
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2030 anything else under the generic fall-back type `application/octet-stream'.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2031 Mmh implements this approach in the
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2032 .Pn print-mimetype
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2033 script
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2034 .Ci 4b5944268ea0da7bb30598a27857304758ea9b44 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2035 .P
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2036 A far better, though less portable, approach is the use of
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2037 .Pn file .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2038 This standard tool tries to determine the type of files.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2039 Unfortunately, its capabilities and accuracy varies from system to system.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2040 Additionally, its output was only intended for human beings,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2041 but not to be used by programs.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2042 Nevertheless, modern versions of GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2043 .Pn file ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2044 which are prevalent on the popular GNU/Linux systems,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2045 provide MIME type output in machine-readable form.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2046 Although this solution is system-dependent,
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2047 it solves the difficult problem well.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2048 On systems where GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2049 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2050 version 5.04 or higher, is available it should be used.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2051 One needs to specify the following profile entry to do so:
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2052 .VS
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2053 Mime-Type-Query: file -b --mime
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2054 VE
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2055 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2056 Other versions of
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2057 .Pn file
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2058 might possibly be usable with wrapper scripts that reformat the output.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2059 The diversity among
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2060 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2061 implementations is great; one needs to check the local variant.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2062 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2063 It is not possible in mmh to override the automatic MIME type guessing
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2064 for a specific file.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2065 To do so, either the user would need to know in advance for which file
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2066 the automatic guessing fails or the system would require interaction.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2067 I consider both cases impractical.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2068 The existing solution should be sufficient.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2069 If not, the user may always fall back to
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2070 .Pn mhbuild
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2071 composition drafts and bypass the attachment system.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2072
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2073
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2074 .U3 "Storing Attachments
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2075 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2076 Extracting MIME parts of a message and storing them to disk is performed by
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2077 .Pn mhstore .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2078 The program has two operation modes,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2079 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2080 and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2081 .Sw -noauto .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2082 With the former one, each part is stored under the filename given in the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2083 MIME part's meta information, if available.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2084 This naming information is usually available for modern attachments.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2085 If no filename is available, this MIME part is stored as if
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2086 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2087 would have been specified.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2088 In the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2089 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2090 mode, the parts are processed according to rules, defined by
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2091 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2092 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2093 These rules define generic filename templates for storing
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2094 or commands to post-process the contents in arbitrary ways.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2095 If no matching rule is available the part is stored under a generic
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2096 filename, built from message number, MIME part number, and MIME type.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2097 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2098 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2099 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2100 mode had been the default in nmh because it was considered safe,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2101 in contrast to the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2102 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2103 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2104 In mmh,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2105 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2106 is not dangerous anymore.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2107 Two changes were necessary:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2108 .LI 1
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2109 Any directory path is removed from the proposed filename.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2110 Thus, the files are always stored in the expected directory.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2111 .Ci 41b6eadbcecf63c9a66aa5e582011987494abefb
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2112 .LI 2
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2113 Tar files are not extracted automatically any more.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2114 Thus, the rest of the file system will not be touched.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2115 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2116 .P
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2117 In mmh, the result of
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2118 .Cl "mhstore -auto
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2119 can be foreseen from the output of
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2120 .Cl "mhlist -verbose" .
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2121 Although the
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2122 .Sw -noauto
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2123 mode is considered to be more powerful, it is less convenient and
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2124 .Sw -auto
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2125 is safe now.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2126 Additionally, storing attachments under their original name
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2127 is intuitive.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2128 Hence,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2129 .Sw -auto
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2130 serves better as the default option
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2131 .Ci 3410b680416c49a7617491af38bc1929855a331d .
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2132 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2133 Files are stored into the directory given by the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2134 .Pe Nmh-Storage
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2135 profile entry, if set, or
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2136 into the current working directory, otherwise.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2137 Storing to different directories is only possible with
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2138 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2139 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2140 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2141 Still existing files get overwritten silently in both modes.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2142 This can be considered a bug.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2143 Yet, each other behavior has its draw-backs, too.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2144 Refusing to replace files requires adding a
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2145 .Sw -force
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2146 switch.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2147 Users will likely need to invoke
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2148 .Pn mhstore
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2149 a second time with
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2150 .Sw -force .
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2151 Eventually, only the user can decide in the specific case.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2152 This requires interaction, which I like to avoid if possible.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2153 Appending a unique suffix to the filename is another bad option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2154 For now, the behavior remains as it is.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2155 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2156 In mmh, only MIME parts of type message are special in
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2157 .Pn mhstore 's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2158 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2159 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2160 Instead of storing message/rfc822 parts as files to disk,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2161 they are stored as messages into the current mail folder.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2162 The same applies to message/partial, although the parts are
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2163 automatically reassembled beforehand.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2164 MIME parts of type message/external-body are not automatically retrieved
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2165 anymore.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2166 Instead, information on how to retrieve them is output.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2167 Not supporting this rare case saved nearly one thousand lines of code
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2168 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32 .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2169 The MIME type `application/octet-stream; type=tar' is not special anymore.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2170 The automatically extracting of such MIME parts had been the
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2171 dangerous part of the
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2172 .Sw -auto
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2173 mode
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2174 .Ci 94c80042eae3383c812d9552089953f9846b1bb6 .
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2175
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2176
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2177
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2178 .U3 "Showing MIME Messages
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2179 .Id showing-mime-msgs
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2180 .P
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2181 The program
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2182 .Pn mhshow
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2183 was written to display MIME messages.
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2184 It implemented the conceptional view of the MIME RFCs.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2185 Nmh's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2186 .Pn mhshow
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2187 handles each MIME part independently, presenting them separately
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2188 to the user.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2189 This does not match today's understanding of email attachments,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2190 where displaying a message is seen to be a single, integrated operation.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2191 Today, email messages are expected to consist of a main text part
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2192 plus possibly attachments.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2193 They are no more seen to be arbitrary MIME hierarchies with
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2194 information on how to display the individual parts.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2195 I adjusted
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2196 .Pn mhshow 's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2197 behavior to the modern view on the topic.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2198 .P
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	2199 One should note that this section completely ignores the original
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2200 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2201 program, because it was not capable to display MIME messages
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2202 and is no longer part of mmh
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2203 (cf. Sec.
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2204 .Cf mhshow ).
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2205 Although
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2206 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2207 was renamed to
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2208 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2209 in mmh, this section uses the name
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2210 .Pn mhshow ,
224 b0e83cfde2bf Further minor improvements. markus schnalke <meillo@marmaro.de> parents: 223 diff changeset	2211 in order to avoid confusion.
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2212 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2213 In mmh, the basic idea is that
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2214 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2215 should display a message in one single pager session.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2216 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2217 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2218 invokes a pager session for all its output,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2219 whenever it prints to a terminal
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2220 .Ci a4197ea6ffc5c1550e8b52d5a654bcaaaee04a4e .
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2221 In consequence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2222 .Pn mhl
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2223 does no more invoke a pager
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2224 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70 .
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2225 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2226 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2227 replacing the original
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2228 .Pn show ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2229 the output of
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2230 .Pn mhl
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2231 no longer goes to the terminal directly, but through
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2232 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2233 Hence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2234 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2235 does not need to invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2236 The one and only job of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2237 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2238 is to format messages or parts of them.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2239 The only place in mmh, where a pager is invoked is
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2240 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2241 .P
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2242 Only text content is displayed.
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2243 Other kinds of attachments are ignored.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2244 Non-text content needs to be converted to text by appropriate
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2245 .Pe mhshow-show-*
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2246 profile entries before, if this is possible and wanted.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2247 A common example for this are PDF files.
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2248 .P
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	2249 MIME parts are always displayed serially.
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2250 The request to display the MIME type `multipart/parallel' in parallel
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2251 is ignored.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2252 It is simply treated as `multipart/mixed'
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2253 .Ci d0581ba306a7299113a346f9b4c46ce97bc4cef6 .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2254 This was already possible to requested with the, now removed,
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2255 .Sw -serialonly
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2256 switch of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2257 .Pn mhshow .
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	2258 As MIME parts are always processed exclusively, i.e. serially,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2259 the `\fL%e\fP' escape in
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2260 .Pe mhshow-show-*
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2261 profile entries became useless and was thus removed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2262 .Ci a20d405db09b7ccca74d3e8c57550883da49e1ae .
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2263 For parallel display, the attachments need to be stored to disk first.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2264 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2265 To display text content in foreign charsets, they need to be converted
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2266 to the native charset.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2267 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2268 .Pe mhshow-charset-*
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2269 profile entries were needed.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2270 In mmh, the conversion is performed automatically by piping the
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2271 text through the
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2272 .Pn iconv
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2273 command, if necessary
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2274 .Ci 2433122c20baccb10b70b49c04c6b0497b5b3b60 .
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2275 Custom
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2276 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2277 rules for textual content might need a
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2278 .Cl "iconv -f %c %f \|
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2279 prefix to have the text converted to the native charset.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2280 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2281 Although the conversion of foreign charsets to the native one
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2282 has improved, it is not consistent enough.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2283 Further work needs to be done and
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2284 the basic concepts in this field need to be re-thought.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2285 Though, the default setup of mmh displays message in foreign charsets
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2286 correctly without the need to configure anything.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2287
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2288
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2289 .ig
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2290
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2291 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2292 mhshow/mhstore: Removed support for retrieving message/external-body parts.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	2293 These tools will not download the contents automatically anymore. Instead,
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2294 they print the information needed to get the contents. If someone should
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2295 really receive one of those rare message/external-body messages, he can
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2296 do the job manually. We save nearly a thousand lines of code. That's worth
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2297 it!
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2298 (The profile entry `nmh-access-ftp' and sbr/ruserpass.c for reading
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2299 ~/.netrc are gone now.)
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2300 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2301
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2302 ..
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2303
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2304
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2305
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2306 .H2 "Signing and Encrypting
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	2307 .P
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2308 Nmh offers no direct support for digital signatures and message encryption.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2309 This functionality needed to be added through third-party software.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2310 In mmh, the functionality is included because it
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2311 is a part of modern email and is likely wanted by users of mmh.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2312 A fresh mmh installation supports signing and encrypting
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2313 out-of-the-box.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2314 Therefore, Neil Rickert's
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2315 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2316 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2317 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2318 scripts
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2319 .[
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2320 neil rickert mhsign mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2321 .]
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2322 were included
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2323 .Ci f45cdc98117a84f071759462c7ae212f4bc5ab2e
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2324 .Ci 58cf09aa36e9f7f352a127158bbf1c5678bc6ed8 .
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2325 The scripts fit well because they are lightweight and
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2326 similar of style to the existing tools.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2327 Additionally, no licensing difficulties appeared
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2328 as they are part of the public domain.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2329 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2330 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2331 handles the signing and encrypting part.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2332 It comprises about 250 lines of shell code and interfaces between
223 1fa5a74bf138 Reworked References structure: Collect them all in one Chapter. markus schnalke <meillo@marmaro.de> parents: 220 diff changeset	2333 .Pn gnupg
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2334 and the MH system.
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2335 It was meant to be invoked manually at the WhatNow prompt, but in mmh,
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2336 .Pn send
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2337 invokes
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2338 .Pn mhsign
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2339 automatically
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2340 .Ci c7b5e1df086bcc37ff40163ee67571f076cf6683 .
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2341 Special header fields were introduced to request this action.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2342 If a draft contains the
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2343 .Hd Sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2344 header field,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2345 .Pn send
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2346 will initiate the signing.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2347 The signing key is either chosen automatically or it is specified by the
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2348 .Pe Pgpkey
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2349 profile entry.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2350 .Pn send
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2351 always create signatures using the PGP/MIME standard [RFC\\|4880],
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2352 but by invoking
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2353 .Pn mhsign
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2354 manually, old-style non-MIME signatures can be created as well.
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2355 To encrypt an outgoing message, the draft needs to contain an
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2356 .Hd Enc
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2357 header field.
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2358 Public keys of all recipients are searched for in the gnupg keyring and
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2359 in a file called
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2360 .Fn pgpkeys ,
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2361 which contains exceptions and overrides.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2362 Unless public keys are found for all recipients,
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2363 .Pn mhsign
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2364 will refuse to encrypt it.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2365 Currently, messages with hidden (BCC) recipients can not be encrypted.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2366 This work is pending because it requires a structurally more complex
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2367 approach.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2368 .P
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2369 .Pn mhpgp
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2370 is the companion to
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2371 .Pn mhsign .
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2372 It verifies signatures and decrypts messages.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2373 Encrypted messages can be either temporarily decrypted and displayed
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2374 or permanently decrypted and stored into the current folder.
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2375 Currently,
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2376 .Pn mhpgp
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2377 needs to be invoked manually.
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2378 The integration into
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2379 .Pn show
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2380 and
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2381 .Pn mhstore
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2382 to verify signatures and decrypt messages as needed
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2383 is planned but not yet realized.
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2384 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2385 Both scripts were written for nmh.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2386 Hence they needed to be adjust
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2387 according to the differences between nmh and mmh.
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2388 For instance, they use the backup prefix no longer.
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2389 Furthermore, compatibility support for old PGP features was dropped.
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2390 .P
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2391 The integrated message signing and encrypting support is one of the
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2392 most recent features in mmh.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2393 It has not had the time to mature.
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2394 User feedback and personal experience need to be accumulated to
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2395 direct the further development of the facility.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2396 Already it seems to be worthwhile to consider adding
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2397 .Sw -[no]sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2398 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2399 .Sw -[no]enc
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2400 switches to
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2401 .Pn send ,
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2402 to be able to override the corresponding header fields.
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2403 A profile entry:
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2404 .VS
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2405 send: -sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2406 VE
177 3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2407 would then activate signing for all outgoing messages.
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2408 With the present approach, a
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2409 .Hd Send
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2410 header component needs to be added to each draft template
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2411 to achieve the same result.
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2412 Adding the switches would ease the work greatly and keep the
3d7db5c7965d Finished the section on signing and encryption. markus schnalke <meillo@marmaro.de> parents: 173 diff changeset	2413 template files clean.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2414
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2415
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2416
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2417
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2418 .H2 "Draft and Trash Folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2419 .P
14 55ec590cfa07 Wrote about the draft folder. markus schnalke <meillo@marmaro.de> parents: 12 diff changeset	2420
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2421 .U3 "Draft Folder
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2422 .Id draft-folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2423 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2424 In the beginning, MH had the concept of a draft message.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2425 This was a file named
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2426 .Fn draft
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2427 in the MH directory, which was treated special.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2428 On composing a message, this draft file was used.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2429 When starting to compose another message before the former one was sent,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2430 the user had to decide among:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2431 .LI 1
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2432 Using the old draft to finish and send it before starting with a new one.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2433 .LI 2
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2434 Discarding the old draft and replacing it with a new one.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2435 .LI 3
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2436 Preserving the old draft by refiling it to a folder.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2437 .LP
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2438 Working on multiple drafts was only possible in alternation.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2439 For that, the current draft needed to be refiled to a folder and
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2440 another one re-used for editing.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2441 Working on multiple drafts at the same time was impossible.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2442 The usual approach of switching to a different MH context did not
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2443 help anything.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2444 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2445 The draft folder facility exists to
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2446 allow true parallel editing of drafts, in a straight forward way.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2447 It was introduced by Marshall T. Rose, already in 1984.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2448 Similar to other new features, the draft folder was inactive by default.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2449 Even in nmh, the highly useful draft folder was not available
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2450 out-of-the-box.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2451 At least, Richard Coleman added the man page
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2452 .Mp mh-draft (5)
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2453 to better document the feature.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2454 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2455 Not using the draft folder facility has the single advantage of having
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2456 the draft file at a static location.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2457 This is simple in simple cases but the concept does not scale for more
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2458 complex cases.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2459 The concept of the draft message is too limited for the problem
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2460 it tries to solve.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2461 Therefore the draft folder was introduced.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2462 It is the more powerful and more natural concept.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2463 The draft folder is a folder like any other folder in MH.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2464 Its messages can be listed like any other messages.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2465 A draft message is no longer a special case.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2466 Tools do not need special switches to work on the draft message.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2467 Hence corner cases were removed.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2468 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2469 The trivial part of the work was activating the draft folder with a
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2470 default name.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2471 I chose the name
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2472 .Fn +drafts ,
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2473 for obvious reasons.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2474 In consequence, the command line switches
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2475 .Sw -draftfolder
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2476 and
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2477 .Sw -draftmessage
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2478 could be removed.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2479 More difficult but also more improving was updating the tools to the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2480 new concept.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2481 For nearly three decades, the tools needed to support two draft handling
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2482 approaches.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2483 By fully switching to the draft folder, the tools could be
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2484 simplified by dropping the awkward draft message handling code.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2485 .Sw -draft
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2486 switches were removed because operating on a draft message is no longer
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2487 special.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2488 It became indistinguishable to operating on any other message.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2489 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2490 .P
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2491 There is no more need to query the user for draft handling
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2492 .Ci 2d48b455c303a807041c35e4248955f8bec59eeb .
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2493 It is always possible to add another new draft.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2494 Refiling drafts is without difference to refiling other messages.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2495 All of these special cases are gone.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2496 Yet, one draft-related switch remained.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2497 .Pn comp
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2498 still has
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2499 .Sw -[no]use
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2500 for switching between two modes:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2501 .LI 1
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2502 Modifying an existing draft, with
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2503 .Sw -use .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2504 .LI 2
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2505 Composing a new draft, possibly taking some existing message as template,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2506 with
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2507 .Sw -nouse ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2508 the default.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2509 .LP
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2510 In either case, the behavior of
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2511 .Pn comp
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2512 is deterministic.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2513 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2514 .Pn send
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2515 now operates on the current message in the draft folder by default.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2516 As message and folder can both be overridden by specifying them on
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2517 the command line, it is possible to send any message in the mail storage
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2518 by simply specifying its number and folder.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2519 In contrast to the other tools,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2520 .Pn send
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2521 takes the draft folder as its default folder.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2522 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2523 Dropping the draft message concept in favor for the draft folder concept,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2524 replaced special cases with regular cases.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2525 This simplified the source code of the tools, as well as the concepts.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2526 In mmh, draft management does not break with the MH concepts
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2527 but applies them.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2528 .Cl "scan +drafts" ,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2529 for instance, is a truly natural request.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2530 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2531 Most of the work was already performed by Rose in the eighties.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2532 The original improvement of mmh is dropping the old draft message approach
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2533 and thus simplifying the tools, the documentation,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2534 and the system as a whole.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2535 Although my part in the draft handling improvement was small,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2536 it was important.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2537
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2538
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2539 .U3 "Trash Folder
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2540 .Id trash-folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2541 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2542 Similar to the situation for drafts is the situation for removed messages.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2543 Historically, a message was ``deleted'' by prepending a specific
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	2544 \fIbackup prefix\fP, usually the comma character,
4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	2545 to the file name.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2546 The specific file would then be ignored by MH because only files with
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2547 names consisting of digits only are treated as messages.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2548 Although files remained in the file system,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2549 the messages were no longer visible in MH.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2550 To truly delete them, a maintenance job was needed.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2551 Usually a cron job was installed to delete them after a grace time.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2552 For instance:
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2553 .VS
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2554 find $HOME/Mail -type f -name ',*' -ctime +7 -delete
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2555 VE
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2556 In such a setup, the original message could be restored
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2557 within the grace time interval by stripping the
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2558 backup prefix from the file name \(en usually but not always.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2559 If the last message of a folder with six messages (\fL1-6\fP) was removed,
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2560 message
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2561 .Fn 6 ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2562 became file
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2563 .Fn ,6 .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2564 If then a new message entered the same folder, it would be named with
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2565 the number one above the highest existing message number.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2566 In this case the message would be named
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2567 .Fn 6 ,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2568 reusing the number.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2569 If this new message would be removed as well,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2570 then the backup of the former message becomes overwritten.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2571 Hence, the ability to restore removed messages did not only depend on
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2572 the sweeping cron job but also on the removing of further messages.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2573 It is undesirable to have such obscure and complex mechanisms.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2574 The user should be given a small set of clear assertions, such as
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2575 ``Removed files are restorable within a seven-day grace time.''
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2576 With the addition ``... unless a message with the same name in the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2577 same folder is removed before.'' the statement becomes complex.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2578 A user will hardly be able to keep track of all removals to know
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2579 if the assertion still holds true for a specific file.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2580 In practice, the real mechanism is unclear to the user.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2581 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2582 Furthermore, the backup files were scattered within the whole mail storage.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2583 This complicated managing them.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2584 It was possible with the help of
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2585 .Pn find ,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2586 but everything is more convenient
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2587 if the deleted messages are collected in one place.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2588 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2589 The profile entry
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2590 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2591 (previously named
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2592 .Pe Delete-Prog )
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2593 was introduced very early to improve the situation.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2594 It could be set to any command, which would be executed to remove
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2595 the specified messages.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2596 This had overridden the default action, described above.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2597 Refiling the to-be-removed files to a trash folder was the usual example.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2598 Nmh's man page
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2599 .Mp rmm (1)
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2600 proposes to set the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2601 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2602 to
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2603 .Cl "refile +d
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2604 to move messages to the trash folder
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2605 .Fn +d
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2606 instead of renaming them with the backup prefix.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2607 The man page additionally proposes the expunge command
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2608 .Cl "rm `mhpath +d all`
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2609 to empty the trash folder.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2610 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2611 Removing messages in such a way has advantages:
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2612 .LI 1
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2613 The mail storage is prevented from being cluttered with removed messages
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2614 because they are all collected in one place.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2615 Existing and removed messages are thus separated more strictly.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2616 .LI 2
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2617 No backup files are silently overwritten.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2618 .LI 3
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2619 Most important, however, removed messages are kept in the MH domain.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2620 Messages in the trash folder can be listed like those in any other folder.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2621 Deleted messages can be displayed like any other messages.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2622 .Pn refile
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2623 can restore deleted messages.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2624 All operations on deleted files are still covered by the MH tools.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2625 The trash folder is just like any other folder in the mail storage.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2626 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2627 Similar to the draft folder case, I dropped the old backup prefix approach
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2628 in favor for replacing it by the better suiting trash folder system.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2629 Hence,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2630 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2631 calls
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2632 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2633 to move the to-be-removed message to the trash folder,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2634 .Fn +trash
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2635 by default.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2636 To sweep it clean, the user can use
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2637 .Cl "rmm -unlink +trash a" ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2638 where the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2639 .Sw -unlink
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2640 switch causes the files to be unlinked.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2641 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2642 .Ci ca0b3e830b86700d9e5e31b1784de2bdcaf58fc5
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2643 .P
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2644 Dropping the legacy approach and converting to the new approach
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2645 completely, simplified the code base.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2646 The relationship between
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2647 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2648 and
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2649 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2650 was inverted.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2651 In mmh,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2652 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2653 invokes
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2654 .Pn refile .
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2655 That used to be the other way round.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2656 Yet, the relationship is simpler now.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2657 Loops, like described in nmh's man page for
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2658 .Mp refile (1),
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2659 can no longer occur:
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2660 .QS
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2661 Since
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2662 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2663 uses your
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2664 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2665 to delete the message, the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2666 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2667 must NOT call
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2668 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2669 without specifying
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2670 .Sw -normmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2671 or you will create an infinite loop.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2672 .QE
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2673 .LP
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2674 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2675 either unlinks a message with
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2676 .Fu unlink()
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2677 or invokes
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2678 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2679 to move it to the trash folder.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2680 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2681 does not invoke any tools.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2682 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2683 By generalizing the message removal in the way that it became covered
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2684 by the MH concepts made the whole system more powerful.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2685
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2686
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2687
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2688
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2689
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2690 .H2 "Modern Defaults
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2691 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2692 Nmh has a bunch of convenience-improving features inactive by default,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2693 although one can expect every new user to want them active.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2694 The reason they are inactive by default is the wish to stay compatible
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2695 with old versions.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2696 But what are old versions?
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2697 Still, the highly useful draft folder facility has not been activated
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2698 by default although it was introduced over twenty-five years ago.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2699 .[
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2700 rose romine real work
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2701 .]
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2702 The community seems not to care.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2703 .P
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2704 In nmh, new users are required to first build up
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2705 a profile before they can access the modern features.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2706 Without an extensive profile, the setup is hardly usable
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2707 for modern emailing.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2708 The point is not the customization of the setup,
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2709 but the need to activate generally useful facilities.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2710 Yet, the real problem lies less in enabling the features,
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2711 as this is straight forward as soon as one knows what he wants.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2712 The real problem is that new users need deep insight into the project
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2713 to discover the available but inactive features.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2714 To give an example, I needed one year of using nmh
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2715 before I became aware of the existence of the attachment system.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2716 One could argue that this fact disqualifies my reading of the
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2717 documentation.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2718 If I would have installed nmh from source back then, I could agree.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2719 Yet, I had used a pre-packaged version and had expected that it would
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2720 just work.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2721 Nevertheless, I had been convinced by the concepts of MH already
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2722 and I am a software developer,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2723 still I required a lot of time to discover the cool features.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2724 How can we expect users to be even more advanced than me,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2725 just to enable them to use MH in a convenient and modern way?
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2726 Unless they are strongly convinced of the concepts, they will fail.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2727 I have seen friends of me giving up disappointed
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2728 before they truly used the system,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2729 although they had been motivated in the beginning.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2730 New users suffer hard enough to get used to the tool chest approach,
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	2731 we developers should spare them further inconveniences.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2732 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2733 Maintaining compatibility for its own sake is bad,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2734 because the code base will collect more and more compatibility code.
200 c299ed65d015 Spell checked. markus schnalke <meillo@marmaro.de> parents: 199 diff changeset	2735 Sticking to the compatibility code means remaining limited;
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2736 whereas adjusting to the changes renders the compatibility unnecessary.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2737 Keeping unused alternatives in the code for longer than a short
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2738 grace time is a bad choice as they likely
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2739 gather bugs by not being constantly tested.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2740 Also, the increased code size and the greater number of conditions
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2741 increase the maintenance costs.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2742 If any MH implementation would be the back-end of widespread
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2743 email clients with large user bases, compatibility would be more
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2744 important.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2745 Yet, it appears as if this is not the case.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2746 Hence, compatibility is hardly important for technical reasons.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2747 Its importance originates from personal reasons rather.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2748 Nmh's user base is small and old.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2749 Changing the interfaces causes inconvenience to long-term users of MH.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2750 It forces them to change their many years old MH configurations.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2751 I do understand this aspect, but by sticking to the old users,
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2752 new users are kept from entering the world of MH.
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2753 But the future lies in new users.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2754 In consequence, mmh invites new users by providing a convenient
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2755 and modern setup, readily usable out-of-the-box.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2756 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2757 In mmh, all modern features are active by default and many previous
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2758 approaches are removed or only accessible in a manual way.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2759 New default features include:
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2760 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2761 The attachment system (\c
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2762 .Hd Attach )
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2763 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1 .
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2764 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2765 The draft folder facility (\c
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2766 .Fn +drafts )
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2767 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860 .
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2768 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2769 The unseen sequence (`u')
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2770 .Ci c2360569e1d8d3678e294eb7c1354cb8bf7501c1
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2771 and the sequence negation prefix (`!')
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2772 .Ci db74c2bd004b2dc9bf8086a6d8bf773ac051f3cc .
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2773 .BU
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2774 Quoting the original message in the reply
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2775 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6 .
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2776 .BU
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2777 Forwarding messages using MIME
f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2778 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1 .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2779 .LP
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2780 An mmh setup with a profile that defines only the path to the
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2781 mail storage, is already convenient to use.
217 f3f65376bef9 A big bunch of corrections in 2.1 and 2.2. markus schnalke <meillo@marmaro.de> parents: 212 diff changeset	2782 Again, Paul Vixie's supports the direction I took:
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2783 ``the `main branch' should just be modern''.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2784 .[
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2785 paul vixie edginess nmh-workers
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2786 .]
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2787
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2788
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2789
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2790
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2791
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2792 .\" --------------------------------------------------------------
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2793 .H1 "Styling
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	2794 .P
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2795 Kernighan and Pike have emphasized the importance of style in the
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2796 preface of \fPThe Practice of Programming\fP:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2797 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2798 kernighan pike practice of programming
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2799 .], p. x]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2800 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2801 Chapter 1 discusses programming style.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2802 Good style is so important to good programming that we have chosen
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2803 to cover it first.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2804 .QE
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2805 This section covers changes in mmh that were guided by the desire
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2806 to improve on style.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2807 Many of them follow the advice given in the quoted book.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2808
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2809
127 4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2810
4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2811
4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2812 .H2 "Code Style
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2813 .Id code-style
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2814 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2815 .U3 "Indentation Style
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2816 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2817 Indentation styles are the holy cow of programming.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2818 Kernighan and Pike write:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2819 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2820 kernighan pike practice of programming
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2821 .], p. 10]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2822 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2823 Programmers have always argued about the layout of programs,
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2824 but the specific style is much less important than its consistent
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2825 application.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2826 Pick one style, preferably ours, use it consistently, and don't waste
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2827 time arguing.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2828 .QE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2829 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2830 I agree that the constant application is most important,
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2831 but I believe that some styles have advantages over others.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2832 For instance the indentation with tab characters only.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2833 The number of tabs corresponds to the nesting level \(en
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2834 one tab, one level.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2835 Tab characters provide flexible visual appearance because developers
228 a1468cf505fd Spellchecked. markus schnalke <meillo@marmaro.de> parents: 227 diff changeset	2836 can adjust their width as preferred.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2837 There is no more need to check for the correct mixture of
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2838 tabs and spaces.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2839 Two simple rules ensure the integrity and flexibility of the visual
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2840 appearance:
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2841 .LI 1
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2842 Leading whitespace must consist of tabs only.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2843 .LI 2
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2844 All other whitespace should be spaces.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2845 .LP
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2846 Although reformatting existing code should be avoided, I did it.
200 c299ed65d015 Spell checked. markus schnalke <meillo@marmaro.de> parents: 199 diff changeset	2847 I did not waste time arguing; I just reformatted the code.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2848 .Ci a485ed478abbd599d8c9aab48934e7a26733ecb1
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2849
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2850 .U3 "Comments
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2851 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2852 Kernighan and Pike demand: ``Don't belabor the obvious''.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2853 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2854 kernighan pike practice of programming
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2855 .], p. 23]
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2856 Following the advice, I removed unnecessary comments.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2857 For instance, I removed all comments in the following code excerpt
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2858 .Ci 426543622b377fc5d091455cba685e114b6df674 :
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2859 .VS
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2860 context_replace(curfolder, folder); /* update current folder */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2861 seq_setcur(mp, mp->lowsel); /* update current message */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2862 seq_save(mp); /* synchronize message sequences */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2863 folder_free(mp); /* free folder/message structure */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2864 context_save(); /* save the context file */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2865
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2866 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2867
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2868 int c; /* current character */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2869 char cp; / miscellaneous character pointer */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2870
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2871 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2872
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2873 /* NUL-terminate the field */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2874 *cp = '\0';
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2875 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2876 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2877 The information in each of the comments was present in the code
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2878 statements already, except for the NUL-termination, which became
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2879 obvious from the context.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2880
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2881
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2882 .U3 "Names
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2883 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2884 Regarding this topic, Kernighan and Pike suggest:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2885 ``Use active names for functions''.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2886 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2887 kernighan pike practice of programming
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2888 .], p. 4]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2889 One application of this rule was the rename of
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2890 .Fu check_charset()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2891 to
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2892 .Fu is_native_charset()
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2893 .Ci 8d77b48284c58c135a6b2787e721597346ab056d .
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2894 The same change additionally fixed a violation of ``Be accurate'',
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2895 .[ [
eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2896 kernighan pike practice of programming
eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2897 .], p. 4]
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2898 as the code did not match the expectation the function suggested.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2899 It did not compare charset names but prefixes of them only.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2900 In case the native charset was `ISO-8859-1', then
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2901 .VS
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2902 check_charset("ISO-8859-11", strlen("ISO-8859-11"))
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2903 VE
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2904 had returned true although the upper halves of the code pages
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2905 are different.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2906 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2907 More important than using active names is using descriptive names.
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2908 .VS
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2909 m_unknown(in); /* the MAGIC invocation... */
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2910 VE
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2911 Renaming the obscure
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2912 .Fu m_unknown()
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2913 function was a delightful event, although it made the code less funny
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2914 .Ci 611d68d19204d7cbf5bd585391249cb5bafca846 .
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2915 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2916 Magic numbers are generally considered bad style.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2917 Obviously, Kernighan and Pike agree:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2918 ``Give names to magic numbers''.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2919 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2920 kernighan pike practice of programming
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2921 .], p. 19]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2922 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2923 The argument
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2924 .CW outnum
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2925 of the function
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2926 .Fu scan()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2927 in
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2928 .Fn uip/scansbr.c
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2929 holds the number of the message to be created.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2930 As well it encodes program logic with negative numbers and zero.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2931 This led to obscure code.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2932 I clarified the code by introducing two variables that extracted
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2933 the hidden information:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2934 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2935 int incing = (outnum > 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2936 int ismbox = (outnum != 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2937 VE
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2938 The readable names are thus used in conditions;
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2939 the variable
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2940 .CW outnum
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2941 is used only to extract ordinary message numbers
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2942 .Ci b8b075c77be7794f3ae9ff0e8cedb12b48fd139f .
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2943 .P
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2944 Through the clarity improvement of the change detours in the program
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2945 logic of related code parts became apparent.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2946 The implementation was simplified.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2947 This possibility to improve had been invisible before
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2948 .Ci aa60b0ab5e804f8befa890c0a6df0e3143ce0723 .
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2949 .P
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2950 The names just described were a first step, yet the situation
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2951 was further improved by giving names to the magic values of
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2952 .CW outnum :
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2953 .VS
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2954 #define SCN_MBOX (-1)
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2955 #define SCN_FOLD 0
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2956 VE
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2957 The two variables were updated thereafter as well:
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2958 .VS
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2959 int incing = (outnum != SCN_MBOX && outnum != SCN_FOLD);
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2960 int scanfolder = (outnum == SCN_FOLD);
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2961 VE
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2962 Furthermore,
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2963 .CW ismbox
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2964 was replaced by
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2965 .CW scanfolder
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2966 because that matched better to the program logic.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2967 .Ci 7ffb36d28e517a6f3a10272056fc127592ab1c19
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2968
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2969
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2970
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2971
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2972 .H2 "Structural Rework
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2973 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2974 Although the stylistic changes described already improve the
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2975 readability of the source code, all of them were changes ``in the small''.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2976 Structural changes, in contrast, affect much larger code areas.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2977 They are more difficult to accomplish but lead to larger improvements,
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2978 especially as they often influence the outer shape of the tools as well.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2979 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2980 At the end of their chapter on style,
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2981 Kernighan and Pike ask: ``But why worry about style?''
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2982 .[ [
eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	2983 kernighan pike practice of programming
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2984 .], p. 28].
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2985 Following are two examples of structural rework that demonstrate
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2986 why style is important in the first place.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2987
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2988
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2989 .U3 "Rework of \f(CWanno\fP
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2990 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2991 Until 2002,
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2992 .Pn anno
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2993 had six functional command line switches:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2994 .Sw -component
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2995 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2996 .Sw -text ,
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	2997 each with an argument,
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2998 and the two pairs of flags,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2999 .Sw -[no]date
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3000 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3001 .Sw -[no]inplace .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3002 Then Jon Steinhart introduced his attachment system.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3003 In need for more advanced annotation handling, he extended
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3004 .Pn anno .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3005 He added five more switches:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3006 .Sw -draft ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3007 .Sw -list ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3008 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3009 .Sw -append ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3010 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3011 .Sw -number ,
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3012 the last one taking an argument
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3013 .Ci 7480dbc14bc90f2d872d434205c0784704213252 .
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3014 Later,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3015 .Sw -[no]preserve
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3016 was added as well
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3017 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f .
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3018 Then, the Synopsis section of the man page
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3019 .Mp anno (1)
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3020 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3021 .VS
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3022 anno [+folder] [msgs] [-component f(CIfieldfP] [-inplace \| -noinplace]
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3023 [-date \| -nodate] [-draft] [-append] [-list] [-delete]
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3024 [-number [f(CInumfP\|fPallfP]] [-preserve \| -nopreserve] [-version]
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3025 [-help] [-text f(CIbodyfP]
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3026 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3027 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3028 The implementation followed the same structure.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3029 Problems became visible when
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3030 .Cl "anno -list -number 42
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3031 worked on the current message instead of on message number 42,
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3032 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3033 .Cl "anno -list -number l:5
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3034 did not work on the last five messages but failed with the mysterious
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3035 error message: ``anno: missing argument to -list''.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3036 Yet, the invocation matched the specification in the man page.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3037 There, the correct use of
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3038 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3039 was defined as being
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3040 .Cl "[-number [num\|all]]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3041 and the textual description for the combination with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3042 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3043 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3044 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3045 The
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3046 .Sw -list
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3047 option produces a listing of the field bodies for
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3048 header fields with names matching the specified component,
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3049 one per line. The listing is numbered, starting at 1, if the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3050 .Sw -number
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3051 option is also used.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3052 .QE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3053 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3054 The problem was manifold.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3055 Semantically, the argument to the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3056 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3057 switch is only necessary in combination with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3058 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3059 but not with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3060 .Sw -list .
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3061 The code, however, required a numeric argument in any case.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3062 If the argument was missing or non-numeric,
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3063 .Pn anno
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3064 aborted with an error message that additionally had an off-by-one error.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3065 It printed the name of the switch one before the concerned one.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3066 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3067 Trying to fix these problems on the surface would not have solved them.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3068 They originate from a discrepance between the
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3069 structure of the problem and the structure implemented in the program.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3070 Such structural differences can only be solved by adjusting the
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3071 structure of the implementation to the structure of the problem.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3072 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3073 Steinhart had added the new
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3074 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3075 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3076 .Sw -delete
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3077 switches in a style similar to the other switches though
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3078 they are of structural different type.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3079 Semantically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3080 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3081 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3082 .Sw -delete
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3083 introduce operation modes.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3084 Historically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3085 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3086 had only one operation mode: adding header fields.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3087 With the extension, two more modes were added:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3088 listing and deleting header fields.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3089 The structure of the code changes did not pay respect to this
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3090 fundamental change.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3091 Neither the implementation nor the documentation did clearly
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3092 declare the exclusive operation modes as such.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3093 Having identified the problem, I solved it by putting structure into
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3094 .Pn anno
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3095 and its documentation
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3096 .Ci d54c8db8bdf01e8381890f7729bc0ef4a055ea11 .
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3097 .P
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	3098 The difference is visible in both the code and the documentation.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3099 For instance in the following code excerpt:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3100 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3101 int delete = -2; /* delete header element if set */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3102 int list = 0; /* list header elements if set */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3103 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3104 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3105 delete = 0;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3106 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3107 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3108 list = 1;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3109 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3110 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3111 .LP
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3112 which was replaced by:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3113 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3114 static enum { MODE_ADD, MODE_DEL, MODE_LIST } mode = MODE_ADD;
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3115 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3116 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3117 mode = MODE_DEL;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3118 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3119 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3120 mode = MODE_LIST;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3121 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3122 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3123 .LP
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3124 The replacement code does not only reflect the problem's structure better,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3125 it is easier to understand as well.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3126 The same applies to the documentation.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3127 The man page was completely reorganized to propagate the same structure.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3128 This is already visible in the Synopsis section:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3129 .VS
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3130 anno [+folder] [msgs] [-component f(CIfieldfP] [-text fPbodyfP]
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3131 [-append] [-date \| -nodate] [-preserve \| -nopreserve]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3132 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3133
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3134 anno -delete [+folder] [msgs] [-component fPfieldfP] [-text
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3135 fPbodyfP] [-number fPnum fP\| fPall fP] [-preserve \| -nopreserve]
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3136 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3137
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3138 anno -list [+folder] [msgs] [-component fPfieldfP] [-number]
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3139 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3140 VE
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3141
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	3142
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	3143
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3144 .U3 "Path Conversion
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3145 .P
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3146 Four kinds of path names can appear in MH:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3147 .LI 1
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3148 Absolute Unix directory paths, like
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3149 .Fn /etc/passwd .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3150 .LI 2
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3151 Relative Unix directory paths, like
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3152 .Fn ./foo/bar .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3153 .LI 3
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3154 Absolute MH folder paths, like
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3155 .Fn +projects/mmh .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3156 .LI 4
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3157 Relative MH folder paths, like
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3158 .Fn @subfolder .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3159 .LP
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3160 Relative MH folder paths, are hardly documented
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3161 although they are useful for large mail storages.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3162 The current mail folder is specified as `\c
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3163 .Fn @ ',
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3164 just like the current directory is specified as `\c
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3165 .Fn . '.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3166 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3167 To allow MH tools to understand all four notations,
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3168 they need to be able to convert between them.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3169 In nmh, these path name conversion functions were located in the files
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3170 .Fn sbr/path.c
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3171 (``return a pathname'') and
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3172 .Fn sbr/m_maildir.c
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3173 (``get the path for the mail directory'').
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3174 The seven functions in the two files were documented with no more
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3175 than two comments, which described obvious information.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3176 The signatures of the four exported functions did not explain their
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3177 semantics:
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3178 .LI 1
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3179 .CW "char path(char , int);
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3180 .LI 2
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3181 .CW "char pluspath(char );
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3182 .LI 3
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3183 .CW "char m_mailpath(char );
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3184 .LI 4
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3185 .CW "char m_maildir(char );
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3186 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3187 My investigations provided the following descriptions:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3188 .LI 1
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3189 The second parameter of
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3190 .Fu path()
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3191 defines the type as which the path given in the first parameter should
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3192 be treated.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3193 Directory paths are converted to absolute directory paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3194 Folder paths are converted to absolute folder paths.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	3195 Folder paths must not include a leading `\fL@\fP' character.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3196 Leading plus characters are preserved.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3197 The result is a pointer to newly allocated memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3198 .LI 2
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3199 .Fu pluspath()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3200 is a convenience-wrapper to
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3201 .Fu path() ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3202 to convert folder paths only.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3203 This function can not be used for directory paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3204 An empty string parameter causes a buffer overflow.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3205 .LI 3
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3206 .Fu m_mailpath()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3207 converts directory paths to absolute directory paths.
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	3208 The characters `\fL+\fP' or `\fL@\fP' at the beginning of the path name are
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3209 treated literal, i.e. as the first character of a relative directory path.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3210 Hence, this function can not be used for folder paths.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3211 In any case, the result is an absolute directory path,
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3212 returned as a pointer to newly allocated memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3213 .LI 4
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3214 .Fu m_maildir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3215 returns the parameter unchanged if it is an absolute directory path
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	3216 or begins with the entry `\fL.\fP' or `\fL..\fP'.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3217 All other strings are prepended with the current working directory.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3218 Hence, this function can not be used for folder paths.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3219 The result is either an absolute directory path or a relative
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3220 directory path, starting with dot or dot-dot.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3221 In contrast to the other functions, the result is a pointer to
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3222 static memory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3223 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3224 The situation was obscure, irritating, error-prone, and non-orthogonal.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3225 Additionally, no clear terminology was used to name the different
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3226 kinds of path names.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3227 Sometimes, the names were even misleading, much as the first argument of
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3228 .Fu m_mailpath() ,
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3229 which was named
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3230 .CW folder ,
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3231 although
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3232 .Fu m_mailpath()
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3233 could not be used with MH folder arguments.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3234 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3235 I clarified the path name conversion by complete rework.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3236 First of all, the terminology needed to be defined.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3237 A path name is either in the Unix domain, then it is called
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	3238 \fIdirectory path\fP or it is in the MH domain,
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	3239 then it is called \fIfolder path\fP.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3240 The two terms need to be used with strict distinction.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3241 Second, I exploited the concept of path type indicators.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3242 By requiring every path name to start with a distinct type identifier,
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3243 the conversion between the types could be fully automated.
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	3244 This allows the tools to accept path names of any type from the user.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3245 Therefore, it was necessary to require relative directory paths to be
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3246 prefixed with a dot character.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3247 In consequence, the dot character could no longer be an alias for the
227 157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	3248 current message
157c92fc1597 Further improvements. markus schnalke <meillo@marmaro.de> parents: 226 diff changeset	3249 .Ci cff0e16925e7edbd25b8b9d6d4fbdf03e0e60c01 .
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3250 Third, I created three new functions to replace the previous mess:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3251 .LI 1
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3252 .Fu expandfol()
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3253 converts folder paths to absolute folder paths.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3254 Directory paths are simply passed through.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3255 This function is to be used for folder paths only, thus the name.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3256 The result is a pointer to static memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3257 .LI 2
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3258 .Fu expanddir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3259 converts directory paths to absolute directory paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3260 Folder paths are treated as relative directory paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3261 This function is to be used for directory paths only, thus the name.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3262 The result is a pointer to static memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3263 .LI 3
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3264 .Fu toabsdir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3265 converts any type of path to an absolute directory path.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3266 This is the function of choice for path conversion.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3267 Absolute directory paths are the most general representation of a
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3268 path name.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3269 The result is a pointer to static memory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3270 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3271 The new functions have names that indicate their use.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3272 Two of the functions convert relative to absolute path names of the
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3273 same type.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3274 The third function converts any path name type to the most general one,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3275 the absolute directory path.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3276 All of the functions return pointers to static memory.
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3277 The file
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3278 .Fn sbr/path.c
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3279 contains the implementation of the functions;
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3280 .Fn sbr/m_maildir.c
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3281 was removed.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3282 .Ci d39e2c447b0d163a5a63f480b23d06edb7a73aa0
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3283 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3284 Along with the path conversion rework, I also replaced
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3285 .Fu getfolder(FDEF)
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3286 with
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3287 .Fu getdeffol()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3288 and
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3289 .Fu getfolder(FCUR)
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3290 with
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3291 .Fu getcurfol() ,
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3292 which only wraps
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3293 .Fu expandfol(""@"")
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3294 for convenience.
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3295 This code was moved from
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3296 .Fn sbr/getfolder.c
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3297 into
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3298 .Fn sbr/path.c
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3299 as well.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3300 .Ci d39e2c447b0d163a5a63f480b23d06edb7a73aa0
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3301 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3302 The related function
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3303 .Fu etcpath()
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3304 is now included in
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3305 .Fn sbr/path.c ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3306 too
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3307 .Ci b4c29794c12099556151d93a860ee51badae2e35 .
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3308 Previously, it had been located in
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3309 .Fn config/config.c .
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3310 .P
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3311 Now,
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3312 .Fn sbr/path.c
219 8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3313 contains all path handling code.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3314 Besides being less code, its readability is highly improved.
8c537982d718 Further improvements of the discussion chapter. markus schnalke <meillo@marmaro.de> parents: 217 diff changeset	3315 The functions follow a common style and are well documented.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3316
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3317
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3318
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3319
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3320 .H2 "Profile Reading
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3321 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3322 The MH profile contains the configuration of a user-specific MH setup.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3323 MH tools read the profile right after starting up
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3324 because it contains the location of the user's mail storage
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3325 and similar settings that influence the whole setup.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3326 Furthermore, the profile contains the default switches for the tools
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3327 as well.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3328 The context file is read along with the profile.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3329 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3330 For historic reasons, some MH tools did not read the profile and context.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3331 Among them were
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3332 .Pn post /\c
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3333 .Pn spost ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3334 .Pn mhmail ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3335 and
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3336 .Pn slocal .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3337 The reason why these tools ignored the profile were not clearly stated.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3338 During a discussion on the nmh-workers mailing list,
181 eb6eeb10afd5 Various stuff: Checked quotes, s/further more/furthermore/, etc markus schnalke <meillo@marmaro.de> parents: 180 diff changeset	3339 David Levine posted an explanation, quoting John Romine:
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3340 .[
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3341 nmh-workers levine post profile
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3342 .]
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3343
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3344 .QS
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3345 I asked John Romine and here's what he had to say, which
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3346 agrees and provides an example that convinces me:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3347 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3348 My take on this is that
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3349 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3350 should not be called by users directly, and it doesn't read the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3351 .Fn .mh_profile
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3352 (only front-end UI programs read the profile).
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3353 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3354 For example, there can be contexts where
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3355 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3356 is called by a helper program (like `\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3357 .Pn mhmail ')
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3358 which may be run by a non-MH user.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3359 We don't want this to prompt the user to create an MH profile, etc.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3360 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3361 My suggestion would be to have
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3362 .Pn send
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3363 pass a (hidden) `\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3364 .Sw -fileproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3365 .Ar proc '
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3366 option to
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3367 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3368 if needed.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3369 You could also
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3370 use an environment variable (I think
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3371 .Pn send /\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3372 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3373 do this).
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3374 .QE
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3375 .sp \n(PDu
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3376 I think that's the way to go.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3377 My personal preference is to use a command line option,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3378 not an environment variable.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3379 .QE
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3380
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3381 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3382 To solve the problem that
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3383 .Pn post
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3384 does not honor the
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3385 .Pe fileproc
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3386 profile entry,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3387 the community roughly agreed that a switch
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3388 .Sw -fileproc
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3389 should be added to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3390 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3391 to be able to pass a different fileproc.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3392 I strongly disagree with this approach because it does not solve
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3393 the problem; it only removes a single symptom.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3394 The actual problem is that
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3395 .Pn post
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3396 does not behave as expected,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3397 though all programs should behave as expected.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3398 Clear and general concepts are a precondition for this.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3399 Thus, there should be no separation into ``front-end UI programs''
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3400 and ones that ``should not be called by users directly''.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3401 The real solution is having all MH tools read the profile.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3402 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3403 But the problem has a further aspect,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3404 which originates from
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3405 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3406 mainly.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3407 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3408 was intended to be a replacement for
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3409 .Pn mailx
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3410 on systems with MH installations.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3411 In difference to
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3412 .Pn mailx ,
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3413 .Pn mhmail
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3414 used MH's
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3415 .Pn post
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3416 to send the message.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3417 The idea was that using
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3418 .Pn mhmail
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3419 should not be influenced whether the user had
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3420 MH set up for himself or not.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3421 Therefore
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3422 .Pn mhmail
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3423 had not read the profile.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3424 As
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3425 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3426 used
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3427 .Pn post ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3428 .Pn post
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3429 was not allowed to read the profile neither.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3430 This is the reason for the actual problem.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3431 Yet, this was not considered much of a problem because
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3432 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3433 was not intended to be used by users directly.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3434 To invoke
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3435 .Pn post ,
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3436 .Pn send
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3437 was used an a front-end.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3438 .Pn send
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3439 read the profile and passed all relevant values on the command line to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3440 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3441 \(en an awkward solution.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3442 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3443 The important insight is that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3444 .Pn mhmail
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3445 is a wolf in sheep's clothing.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3446 This alien tool broke the concepts because it was treated like
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3447 a normal MH tool.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3448 Instead it should have been treated accordingly to its foreign style.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3449 .P
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3450 The solution is not to prevent the tools from reading the profile but
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3451 to instruct them to read a different profile.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3452 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3453 could have set up a well-defined profile and caused the following
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3454 .Pn post
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3455 to use this profile by exporting an environment variable.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3456 With this approach, no special cases would have been introduced
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3457 and no surprises would have been caused.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3458 By writing a wrapper program to provide a clean temporary profile,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3459 the concept could have been generalized orthogonally to the whole
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3460 MH tool chest.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3461 .P
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3462 In mmh, the wish to have
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3463 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3464 as a replacement for
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3465 .Pn mailx
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3466 is considered obsolete.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3467 Mmh's
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3468 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3469 does no longer cover this use-case
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3470 .Ci d36e56e695fe1c482c7920644bfbb6386ac9edb0 .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3471 Currently,
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3472 .Pn mhmail
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3473 is in a transition state
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3474 .Ci 32d4f9daaa70519be3072479232ff7be0500d009 .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3475 It may become a front-end to
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3476 .Pn comp ,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3477 which provides an alternative interface which can be more convenient
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3478 in some cases.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3479 This would convert
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3480 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3481 into an ordinary MH tool.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3482 If, however, this idea does not convince, then
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3483 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3484 will be removed.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3485 .P
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3486 In the mmh tool chest, every program reads the profile.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3487 (\c
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3488 .Pn slocal
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3489 is not considered part of the mmh tool chest (cf. Sec.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3490 .Cf slocal ).)
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3491 Mmh has no
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3492 .Pn post
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3493 program, but it has
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3494 .Pn spost ,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3495 which now does read the profile
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3496 .Ci 3e017a7abbdf69bf0dff7a4073275961eda1ded8 .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3497 Following this change,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3498 .Pn send
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3499 and
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3500 .Pn spost
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3501 can be considered for merging.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3502 Besides
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3503 .Pn send ,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3504 .Pn spost
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3505 is only invoked directly by the to-be-changed
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3506 .Pn mhmail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3507 implementation and by
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3508 .Pn rcvdist ,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3509 which requires rework anyway.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3510
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3511 .P
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3512 Jeffrey Honig quoted Marshall T. Rose explaining the decision that
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3513 .Pn post
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3514 ignores the profile:
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3515 .[
197 05a243dffaca Added refs to the Preface; splitted the bib. markus schnalke <meillo@marmaro.de> parents: 187 diff changeset	3516 nmh-workers honig post profile
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3517 .]
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3518 .QS
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3519 when you run mh commands in a script, you want all the defaults to be
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3520 what the man page says.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3521 when you run a command by hand, then you want your own defaults...
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3522 .QE
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3523 .LP
228 a1468cf505fd Spellchecked. markus schnalke <meillo@marmaro.de> parents: 227 diff changeset	3524 The explanation neither matches the problem concerned exactly
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3525 nor is the interpretation clear.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3526 If the described desire addresses the technical level,
228 a1468cf505fd Spellchecked. markus schnalke <meillo@marmaro.de> parents: 227 diff changeset	3527 then it conflicts fundamentally with the Unix philosophy,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3528 precisely because the indistinquishability of human and script
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3529 input is the main reason for the huge software leverage in Unix.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3530 If, however, the described desire addresses the user's view,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3531 then different technical solutions are more appropriate.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3532 The two cases can be regarded simply as two different MH setups.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3533 Hence, mapping the problem of different behavior between interactive and
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3534 automated use on the concept of switching between different profiles,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3535 marks it already solved.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3536
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3537
127 4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	3538
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3539 .H2 "Standard Libraries
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3540 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3541 MH is one decade older than the POSIX and ANSI C standards.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3542 Hence, MH included own implementations of functions
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3543 that were neither standardized nor widely available, back then.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3544 Today, twenty years after POSIX and ANSI C were published,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3545 developers can expect that systems comply with these standards.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3546 In consequence, MH-specific replacements for standard functions
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3547 can and should be dropped.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3548 Kernighan and Pike advise: ``Use standard libraries''.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3549 .[ [
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3550 kernighan pike practice of programming
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3551 .], p. 196]
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3552 Actually, MH had followed this advice in history,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3553 but it had not adjusted to more recent changes in this field.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3554 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3555 .Fu snprintf()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3556 function, for instance, was standardized with C99 and is available
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3557 almost everywhere because of its high usefulness.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3558 Thus, the project's own implementation of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3559 .Fu snprintf()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3560 was dropped in March 2012 in favor for using the one of the
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3561 standard library
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3562 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32 .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3563 Such decisions limit the portability of mmh
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	3564 if systems do not support these standardized and widespread functions.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3565 This compromise is made because mmh focuses on the future.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3566 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3567 As I am still in my twenties, have no programming experience from
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3568 past decades.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3569 I have not followed the evolution of C through time.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3570 I have not suffered from the the Unix wars.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3571 I have not longed for standardization.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3572 All my programming experience is from a time when ANSI C and POSIX
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3573 were well established already.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3574 Thus, I needed to learn about the history in retrospective.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3575 I have only read a lot of books about the (good) old times.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3576 This put me in a difficult position when working with old code.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3577 I need to freshly acquire knowledge about old code constructs and ancient
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3578 programming styles, whereas older programmers know these things by
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3579 heart from their own experience.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3580 Being aware of the situation, I rather let people with more historic
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3581 experience do the transition from ancient code constructs to
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3582 standardized ones.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3583 Lyndon Nerenberg covered large parts of this task for the nmh project.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3584 He converted project-specific functions to POSIX replacements,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3585 also removing the conditionals compilation of now standardized features.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3586 Ken Hornstein and David Levine had their part in this work, as well.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3587 Often, I only pulled the changes over from nmh into mmh.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3588 These changes include many commits, among them:
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3589 .Ci 768b5edd9623b7238e12ec8dfc409b82a1ed9e2d
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3590 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3591 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3592 Nevertheless, I worked on the task as well, tidying up the
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3593 \fIMH standard library\fP,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3594 .Fn libmh.a .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3595 It is located in the
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3596 .Fn sbr
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3597 (``subroutines'') directory in the source tree and
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3598 includes functions that mmh tools usually need.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3599 Among them are MH-specific functions for profile, context, sequence,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3600 and folder handling, but as well
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3601 MH-independent functions, such as auxiliary string functions,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3602 portability interfaces and error-checking wrappers for critical
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3603 functions of the standard library.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3604 .BU
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3605 I have replaced the
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3606 .Fu atooi()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3607 function with calls to
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3608 .Fu strtoul() ,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3609 setting the third parameter, the base, to eight.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3610 .Fu strtoul()
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3611 is part of C89 and thus considered safe to use
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3612 .Ci c490c51b3c0f8871b6953bd0c74551404f840a74 .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3613 .BU
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3614 I did remove project-included fallback implementations of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3615 .Fu memmove()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3616 and
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3617 .Fu strerror()
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3618 .Ci b067ff5c465a5d243ce5a19e562085a9a1a97215 ,
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3619 although Peter Maydell had re-included them into nmh in 2008
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3620 to support SunOS 4.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3621 Nevertheless, these functions are part of ANSI C.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3622 Systems that do not even provide full ANSI C support should not
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3623 put a load on mmh.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3624 .BU
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3625 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3626 .Fu copy()
180 731e747a805b Applied corrections by Lydi. markus schnalke <meillo@marmaro.de> parents: 179 diff changeset	3627 function copies the string in parameter one to the location in
731e747a805b Applied corrections by Lydi. markus schnalke <meillo@marmaro.de> parents: 179 diff changeset	3628 parameter two.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3629 In contrast to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3630 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3631 it returns a pointer to the terminating null-byte in the destination area.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3632 The code was adjusted to replace
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3633 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3634 with
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3635 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3636 except within
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3637 .Fu concat() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3638 where
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3639 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3640 was more convenient.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3641 Therefore, the definition of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3642 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3643 was moved into the source file of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3644 .Fu concat()
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3645 and its visibility it limited to that
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3646 .Ci 552fd7253e5ee9e554c5c7a8248a6322aa4363bb .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3647 .BU
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3648 The function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3649 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3650 had been a generalized version of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3651 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3652 with minor differences.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3653 As all calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3654 .Fu r1bindex()
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3655 had the slash (`\fL/\fP') as delimiter anyway,
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3656 replacing
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3657 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3658 with the more specific and better-named function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3659 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3660 became desirable.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3661 Unfortunately, many of the 54 calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3662 .Fu r1bindex()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3663 depended on a special behavior,
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3664 which differed from the POSIX specification for
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3665 .Fu basename() .
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3666 Hence,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3667 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3668 was kept but renamed to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3669 .Fu mhbasename() ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3670 setting the delimiter to the slash
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3671 .Ci 240013872c392fe644bd4f79382d9f5314b4ea60 .
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3672 For possible uses of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3673 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3674 with a different delimiter,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3675 the ANSI C function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3676 .Fu strrchr()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3677 provides the core functionality.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3678 .BU
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3679 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3680 .Fu ssequal()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3681 function \(en apparently for ``substring equal'' \(en
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3682 was renamed to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3683 .Fu isprefix() ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3684 because this is what it actually checked
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3685 .Ci c20b4fa14515c7ab388ce35411d89a7a92300711.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3686 Its source file had included both of the following comments, no joke.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3687 .in -\n(PIu
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3688 .VS
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3689 /*
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3690 * THIS CODE DOES NOT WORK AS ADVERTISED.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3691 * It is actually checking if s1 is a PREFIX of s2.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3692 * All calls to this function need to be checked to see
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3693 * if that needs to be changed. Prefix checking is cheaper, so
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3694 * should be kept if it's sufficient.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3695 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3696
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3697 /*
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3698 * Check if s1 is a substring of s2.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3699 * If yes, then return 1, else return 0.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3700 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3701 VE
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3702 .in +\n(PIu
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3703 Eventually, the function was completely replaced with calls to
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3704 .Fu strncmp()
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3705 .Ci b0b1dd37ff515578cf7cba51625189eb34a196cb .
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3706
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3707
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3708
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3709
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3710
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3711 .H2 "User Data Locations
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3712 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3713 In nmh, a personal setup consists of the MH profile and the MH directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3714 The profile is a file named
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3715 .Fn \&.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3716 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3717 It contains the static configuration.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3718 It also contains the location of the MH directory in the profile entry
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3719 .Pe Path .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3720 The MH directory contains the mail storage and is the first
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3721 place to search for form files, scan formats, and similar
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3722 configuration files.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3723 The location of the MH directory can be chosen freely by the user.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3724 The usual name is a directory named
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3725 .Fn Mail
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3726 in the user's home directory.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3727 .P
200 c299ed65d015 Spell checked. markus schnalke <meillo@marmaro.de> parents: 199 diff changeset	3728 The way MH data is split between profile and MH directory is a legacy.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3729 It is only sensible in a situation where the profile is the only
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3730 configuration file.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3731 Why else should the mail storage and the configuration files be intermixed?
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3732 They are of different kind:
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3733 One kind is the data to be operated on and the other kind is
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3734 the configuration to change how tools operate.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3735 Splitting the configuration between the profile and the MH directory
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3736 is inappropriate, as well.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3737 I improved the situation by breaking compatibility.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3738 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3739 In mmh, personal data is grouped by type.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3740 This results in two distinct parts:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3741 the mail storage and the configuration.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3742 The mail storage directory still contains all the messages,
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3743 but, in exception of public sequences files, nothing else.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3744 In difference to nmh, the auxiliary configuration files are no longer
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3745 located there.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3746 Therefore, the directory is no longer called the user's \fIMH directory\fP
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3747 but the user's \fImail storage\fP.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3748 Its location is still user-chosen, with the default name
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3749 .Fn Mail
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3750 in the user's home directory.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3751 The configuration is grouped together in the hidden directory
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3752 .Fn \&.mmh
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3753 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3754 This \fImmh directory\fP contains the context file, personal forms,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3755 scan formats, and the like, but also the user's profile, now named
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3756 .Fn profile .
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3757 The path to the profile is no longer
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3758 .Fn $HOME/.mh_profile
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3759 but
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3760 .Fn $HOME/.mmh/profile .
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3761 (The alternative of having file
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3762 .Fn $HOME/.mh_profile
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3763 and a configuration directory
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3764 .Fn $HOME/.mmh
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3765 appeared to be inconsistent.)
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3766 .P
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3767 The approach chosen for mmh is consistent, simple, and familiar to
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3768 Unix users.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3769 The main achievement of the change is the clear and sensible separation
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3770 of the mail storage and the configuration.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3771 .Ci 7030d7edb099bff36ded7548bb5380f7acab4f9b
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3772 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3773 As MH allows users to have multiple MH setups,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3774 it is necessary to switch the profile.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3775 The profile is the single entry point to access the rest of a
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3776 personal MH setup.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3777 In nmh, the environment variable
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3778 .Ev MH
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3779 is used to specify a different profile.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3780 To operate in the same MH setup with a separate context, the
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3781 .Ev MHCONTEXT
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3782 environment variable is used.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3783 This allows having a separate current folder in each terminal at
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3784 the same time, for instance.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3785 In mmh, three environment variables replace the two of nmh.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3786 .Ev MMH
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3787 overrides the default location of the mmh directory (\c
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3788 .Fn .mmh ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3789 .Ev MMHP
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3790 and
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3791 .Ev MMHC
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3792 override the paths to the profile and context file, respectively.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3793 This approach allows the set of personal configuration files to be chosen
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3794 independently of the profile, context, and mail storage.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3795 The new approach has no functional disadvantages,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3796 as every setup I can imagine can be implemented with both approaches,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3797 possibly even easier with the new one.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3798 .Ci 7030d7edb099bff36ded7548bb5380f7acab4f9b
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3799
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3800
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3801
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3802
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3803
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3804 .H2 "Modularization
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3805 .Id modularization
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3806 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3807 The source code of the mmh tools is located in the
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3808 .Fn uip
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3809 (``user interface programs'') directory.
180 731e747a805b Applied corrections by Lydi. markus schnalke <meillo@marmaro.de> parents: 179 diff changeset	3810 Each tool has a source file with the name of the command.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3811 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3812 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3813 is built from
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3814 .Fn uip/rmm.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3815 Some source files are used for multiple programs.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3816 For example
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3817 .Fn uip/scansbr.c
173 4c7db172fb59 Various corrections and improvements. markus schnalke <meillo@marmaro.de> parents: 171 diff changeset	3818 is used for both
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3819 .Pn scan
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3820 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3821 .Pn inc .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3822 In nmh, 49 tools were built from 76 source files.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3823 This is a ratio of 1.6 source files per program.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3824 32 programs depended on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3825 17 programs depended on one source file only.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3826 In mmh, 39 tools are built from 51 source files.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3827 This is a ratio of 1.3 source files per program.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3828 18 programs depend on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3829 21 programs depend on one source file only.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3830 (These numbers and the ones in the following text ignore the MH library
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3831 as well as shell scripts and multiple names for the same program.)
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3832 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3833 Splitting the source code of a large program into multiple files can
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3834 increase the readability of its source code,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3835 but most of the mmh tools are small and straight-forward programs.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3836 In exception of the MIME handling tools (i.e.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3837 .Pn mhbuild ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3838 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3839 .Pn show ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3840 etc.),
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3841 .Pn pick
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3842 is the only tool with more than one thousand lines of source code.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3843 Splitting programs with less than one thousand lines of code into
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3844 multiple source files leads seldom to better readability.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3845 For such tools, splitting still makes sense
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3846 when parts of the code are reused in other programs
179 b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	3847 and the reused code fragment is (1) not general enough
b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	3848 for including it in the MH library
b59201e345e5 Applied further corrections by Aaron. markus schnalke <meillo@marmaro.de> parents: 178 diff changeset	3849 or (2) has dependencies on a library that only few programs need.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3850 .Fn uip/packsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3851 for instance, provides the core program logic for the
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3852 .Pn packf
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3853 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3854 .Pn rcvpack
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3855 programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3856 .Fn uip/packf.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3857 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3858 .Fn uip/rcvpack.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3859 mainly wrap the core function appropriately.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3860 No other tools use the folder packing functions.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3861 As another example,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3862 .Fn uip/termsbr.c
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3863 accesses terminal properties, which requires linking with the
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3864 \fItermcap\fP or a \fIcurses\fP library.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3865 If
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3866 .Fn uip/termsbr.c
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3867 is included in the MH library, then every program needs to be linked
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3868 with termcap or curses, although only few of the programs use
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3869 the library.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3870 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3871 The task of MIME handling is complex enough that splitting its code
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3872 into multiple source files improves the readability.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3873 The program
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3874 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3875 for instance, is compiled out of seven source files with 2\\|500
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3876 lines of code in summary.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3877 The main code file
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3878 .Fn uip/mhstore.c
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3879 consists of 800 lines; the other 1\\|700 lines are code reused in
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3880 other MIME handling tools.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3881 It seems to be worthwhile to bundle the generic MIME handling code into
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3882 a MH-MIME library, as a companion to the MH standard library.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3883 This is left to be done.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3884 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	3885 The work already accomplished focussed on the non-MIME tools.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3886 The amount of code compiled into each program was reduced.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3887 This eases the understanding of the code base.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3888 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3889 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3890 was built from six source files:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3891 .Fn comp.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3892 .Fn whatnowproc.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3893 .Fn whatnowsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3894 .Fn sendsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3895 .Fn annosbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3896 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3897 .Fn distsbr.c .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3898 In mmh, it builds from only two:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3899 .Fn comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3900 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3901 .Fn whatnowproc.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3902 In nmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3903 .Pn comp ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3904 the core function of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3905 .Pn whatnow ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3906 .Pn send ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3907 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3908 .Pn anno
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3909 were all compiled into
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3910 .Pn comp .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3911 This saved the need to execute these programs with
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3912 the expensive system calls
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3913 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3914 and
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3915 .Fu exec() .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3916 Whereas this approach improved the time performance,
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3917 it interwove the source code.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3918 Core functionalities were not encapsulated into programs but into
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3919 function, which were then wrapped by programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3920 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3921 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3922 included the function
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3923 .Fu annotate() .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3924 Each program that wanted to annotate messages, included the source file
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3925 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3926 and called
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3927 .Fu annotate() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3928 Because the function
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3929 .Fu annotate()
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3930 was used like the tool
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3931 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3932 it had seven parameters, reflecting the command line switches of the tool.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3933 When another pair of command line switches was added to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3934 .Pn anno ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3935 a rather ugly hack was implemented to avoid adding another parameter
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3936 to the function
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3937 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f .
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3938 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3939 In mmh, the relevant code of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3940 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3941 comprises the two files
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3942 .Fn uip/comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3943 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3944 .Fn uip/whatnowproc.c ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3945 together 210 lines of code,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3946 whereas in nmh,
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3947 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3948 comprises six files with 2\\|450 lines.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3949 Not all of the code in these six files is actually used by
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3950 .Pn comp ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3951 but the reader needed to read it all to know which parts are relevant.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3952 Understanding nmh's
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3953 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3954 required understanding the inner workings of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3955 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3956 first.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3957 To be sure to fully understand a program, its whole source code needs
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3958 to be examined.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3959 Not doing so is a leap of faith, assuming that the developers
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3960 have avoided obscure programming techniques.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3961 Here, it should be recalled that information passed in obscure ways
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3962 through the program's source base, due to the aforementioned hack
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3963 to save an additional parameter in nmh's
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3964 .Pn anno .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3965 .P
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3966 In mmh, understanding
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3967 .Pn comp
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3968 requires to read only 210 lines of code to read, whereas the amount
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3969 is ten times more for nmh's
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3970 .Pn comp .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3971 .P
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3972 By separating the tools on the program-level,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3973 the boundaries are clearly visible, as the interfaces are calls to
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3974 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3975 rather than arbitrary function calls.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3976 Additionally, this kind of separation is more strict because
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3977 it is technically enforced by the operating system;
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3978 it can not be simply bypassed with global variables.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3979 Good separation simplifies the understanding of program code
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3980 because the area influenced by any particular statement is small.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3981 As I have read a lot in nmh's code base during the last two years,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3982 I have learned about the easy and the difficult parts.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3983 In my observation, the understanding of code is enormously eased
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3984 if the influenced area is small and clearly bounded.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3985 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3986 Yet, the real problem is another:
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3987 Nmh violates the golden ``one tool, one job'' rule of the Unix philosophy.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3988 Understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3989 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3990 requires understanding
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3991 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3992 and
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3993 .Fn uip/sendsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3994 because
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3995 .Pn comp
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3996 annotates and sends messages.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3997 In nmh, there surely exist the tools
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3998 .Pn anno
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	3999 and
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4000 .Pn send ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4001 which cover these jobs,
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4002 but
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4003 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4004 and
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4005 .Pn repl
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4006 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4007 .Pn forw
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4008 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4009 .Pn dist
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4010 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4011 .Pn whatnow
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4012 and
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4013 .Pn viamail
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4014 \(en they all (!) \(en
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4015 have the same annotating and sending functions included, once more.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4016 As a result,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4017 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4018 sends messages without using
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4019 .Pn send .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4020 The situation is the same as if
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4021 .Pn grep
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4022 would page its output without using
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4023 .Pn more
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4024 just because both programs are part of the same code base.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4025 .P
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4026 The clear separation on the surface of nmh
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4027 \(en the tool chest approach \(en
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4028 is violated on the level below.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4029 This violation is for the sake of time performance.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4030 Decades ago, sacrificing readability and conceptional beauty
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4031 for speed might have been necessary to prevent MH from being
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4032 unusably slow, but today this is not the case anymore.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4033 No longer should speed improvements that became unnecessary be kept.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4034 No longer should readability or conceptional beauty be sacrificed.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4035 No longer should the Unix philosophy's ``one tool, one job''
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4036 guideline be violated.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4037 Therefore, mmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4038 .Pn comp
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4039 no longer sends messages.
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4040 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4041 In mmh, different jobs are divided among separate programs that
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4042 invoke each other as needed.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4043 In consequence,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4044 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4045 invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4046 .Pn whatnow
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4047 which thereafter invokes
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4048 .Pn send
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4049 .Ci 3df5ab3c116e6d4a2fb4bb5cc9dfc5f781825815
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4050 .Ci c73c00bfccd22ec77e9593f47462aeca4a8cd9c0 .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4051 The clear separation on the surface is maintained on the level below.
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4052 Human users and other tools use the same interface \(en
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4053 annotations, for example, are made by invoking
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4054 .Pn anno ,
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4055 no matter if requested by programs or by human beings
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4056 .Ci 469a4163c2a1a43731d412eaa5d9cae7d670c48b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4057 .Ci aed384169af5204b8002d06e7a22f89197963d2d
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4058 .Ci 3caf9e298a8861729ca8b8a84f57022b6f3ea742 .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4059 The decrease of tools built from multiple source files and thus
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4060 the decrease of
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4061 .Fn uip/*sbr.c
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4062 files confirm the improvement
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4063 .Ci 9e6d91313f01c96b4058d6bf419a8ca9a207bc33
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4064 .ci 81744a46ac9f845d6c2b9908074d269275178d2e
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4065 .Ci f0f858069d21111f0dbea510044593f89c9b0829
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4066 .Ci 0503a6e9be34f24858b55b555a5c948182b9f24b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4067 .Ci 27826f9353e0f0b04590b7d0f8f83e60462b90f0
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4068 .Ci d1da1f94ce62160aebb30df4063ccbc53768656b
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4069 .Ci c42222869e318fff5dec395eca3e776db3075455 .
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4070 This is also visible in the complexity of the build dependency graphs:
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4071
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4072 .sp
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4073 Nmh:
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4074 .BP input/deps-nmh.eps .5i
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4075 .EP
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4076 .sp
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4077 Mmh:
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4078 .BP input/deps-mmh.eps .8i
95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4079 .EP
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4080
226 27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	4081 The figures display all program to source file relationships where
27c28990b844 Added quote by Steve Johnson. markus schnalke <meillo@marmaro.de> parents: 225 diff changeset	4082 programs (ellipses) are built from multiple source files (rectangles).
220 95257474a123 Further improvements in the discussion; added build dependency graphs. markus schnalke <meillo@marmaro.de> parents: 219 diff changeset	4083 The primary source file of each program is omited from the graph.

Mercurial > docs > master

annotate discussion.roff @ 230:96778c1afc3e