docs/master: discussion.roff annotate

annotate discussion.roff @ 171:346ff7e201f5

Applied suggestions by Boris.

author	markus schnalke <meillo@marmaro.de>
date	Tue, 10 Jul 2012 16:49:03 +0200
parents	f4ffe121a0a2
children	4c7db172fb59

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.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	5 It is structured along the goals set for the project.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	6 The concrete work undertaken
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	7 is described in the examples of how the general goals were achieved.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	8 The discussion compares the current version of mmh with the state of
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	9 nmh just before the mmh project started, i.e. fall 2011.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	10 Current changes of nmh will be mentioned only as side notes.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	11 .\" XXX where do I discuss the parallel development of nmh?
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	12
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	13
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	14
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	15 .\" --------------------------------------------------------------
125 0e102cec0c73 s/stream-line/streamline/; s/motorbike/motorcycle/ markus schnalke <meillo@marmaro.de> parents: 124 diff changeset	16 .H1 "Streamlining
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	17
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	18 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	19 MH once provided anything necessary for email handling.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	20 The community around nmh has the similar understanding that nmh should
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	21 provide a complete email system.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	22 In fundamental contrast, mmh shall be a MUA only.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	23 I believe that the development of all-in-one mail systems is obsolete.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	24 Today, email is too complex to be fully covered by single projects.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	25 Such a project won't 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	26 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	27 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	28 Excellent implementations for the various aspects of email already exist.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	29 Just to name three examples: Postfix is a specialized MTA,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	30 .\" XXX homepages verlinken
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	31 Procmail is a specialized MDA, and Fetchmail is a specialized MRA.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	32 I believe that it is best to use such specialized tools instead of
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	33 providing the same function again as a side-component in the project.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	34 .\" XXX mail agent picture here
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	35 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	36 Doing something well requires focusing on a small set of specific aspects.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	37 Under the assumption that development focussed on a particular area
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	38 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	39 in their field of focus.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	40 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	41 or modular \(en will never be the best choice in any of the fields.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	42 Even in providing the best consistent all-in-one system, they are likely
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	43 to be beaten by projects that focus only on integrating existing mail
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	44 components to create a homogeneous system.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	45 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	46 The limiting resource in the community development of Free Software
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	47 is usually man power.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	48 .\" XXX FIXME ref!
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	49 If the development power is spread over a large development area,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	50 it becomes even more difficult to compete with the specialists in the
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	51 various fields.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	52 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	53 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	54 .P
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	55 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	56 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	57 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	58 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	59
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	60
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	61 .H2 "Mail Transfer Facilities
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	62 .Id mail-transfer-facilities
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	63 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	64 In contrast to nmh, which also provides mail submission and mail retrieval
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	65 agents, mmh is a MUA only.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	66 This general difference initiated the development of mmh.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	67 The removal of the mail transfer facilities was the first work task
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	68 in the mmh project.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	69 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	70 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	71 experience with Sendmail.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	72 He identified the limitation of Sendmail to the MTA task as one reason for
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	73 its success:
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	74 .[ [
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	75 costales sendmail
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	76 .], p. xviii]
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	77 .QS
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	78 Second, I limited myself to the routing function \(en
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	79 I wouldn't write user agents or delivery back-ends.
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	80 This was a departure of the dominant through of the time,
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	81 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	82 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	83 .QE
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	84 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	85 In nmh, the Mail Submission Agent (MSA) is called
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	86 \fIMessage Transfer Service\fP (MTS).
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	87 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	88 .Pn post
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	89 command, established 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	90 messages to be relayed to the outside world.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	91 The changes in email demanded changes in this part of nmh as well.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	92 Encryption and authentication for network connections
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	93 needed to be supported, hence TLS and SASL were introduced into nmh.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	94 This added complexity to nmh without improving it in its core functions.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	95 Also, keeping up with recent developments in the field of
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	96 mail transfer requires development power and specialists.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	97 In mmh, this whole facility was simply cut off.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	98 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	99 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	100 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	101 Instead, mmh depends on an external MSA.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	102 The only outgoing interface available to mmh is the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	103 .Pn sendmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	104 command, which almost any MSA provides.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	105 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	106 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	107 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	108 over to the MSA.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	109 For example, a wrapper script for qmail would be:
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	110 .VS
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	111 #!/bin/sh
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	112 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	113 VE
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	114 The requirement to parse the recipient addresses out of the message header
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	115 is likely to be removed in the future.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	116 Then mmh would pass the recipient addresses as command line arguments.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	117 This appears to be the better interface.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	118 .\" XXX implement it
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	119 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	120 To retrieve mail, the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	121 .Pn inc
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	122 command acted as an Mail Retrieval Agent (MRA).
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	123 It established network connections
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	124 and spoke POP3 to retrieve mail from remote servers.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	125 As with mail submission, the network connections required encryption and
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	126 authentication, thus TLS and SASL were added.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	127 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	128 additions, too, and likewise for any other changes in mail transfer.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	129 Not so for mmh because it has dropped the support for retrieving mail
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	130 from remote locations.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	131 .Ci ab7b48411962d26439f92f35ed084d3d6275459c
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	132 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	133 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	134 (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	135 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	136 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	137 .Pn rcvstore
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	138 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	139 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	140 With the removal of the MSA and MRA, mmh converted from an all-in-one
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	141 mail system to being a MUA only.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	142 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	143 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	144 an external MRA is required to retrieve mail from remote machines.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	145 Excellent implementations of such software exist,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	146 which likely are superior than the internal version.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	147 Additionally, the best suiting programs can be freely chosen.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	148 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	149 As it had already been possible to use an external MSA or MRA,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	150 why not keep the internal version for convenience?
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	151 .\" XXX ueberleitung
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	152 The question whether there is sense in having a fall-back pager in all
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	153 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	154 .Pn more
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	155 or
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	156 .Pn less
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	157 aren't available, appears to be ridiculous.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	158 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	159 and not necessarily available but still the concept of orthogonal
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	160 design holds: ``Write programs that do one thing and do it well.''
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	161 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	162 mcilroy unix phil
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	163 p. 53
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	164 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	165 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	166 mcilroy bstj foreword
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	167 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	168 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	169 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	170 In other words:
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	171 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	172 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	173 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	174 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	175 separate projects then they should be separated.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	176 In my opinion, this is the case here.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	177 The RFCs propose this separation by clearly distinguishing the different
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	178 mail handling tasks.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	179 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	180 rfc 821
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	181 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	182 The small interfaces between the mail agents support the separation.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	183 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	184 Email once had been small and simple.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	185 At that time,
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	186 .Pn /bin/mail
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	187 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	188 Later, the essential complexity of email increased.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	189 (Essential complexity is the complexity defined by the problem itself.\0
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	190 .[[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	191 brooks no silver bullet
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	192 .]])
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	193 Email systems reacted to this change: they grew.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	194 RFCs started to introduce the concept of mail agents to separate the
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	195 various tasks because they became more extensive and new tasks appeared.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	196 As the mail systems grew even more, parts were split off.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	197 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	198 it was removed in nmh.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	199 Now is the time to go one step further and split off the MSA and MRA, too.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	200 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	201 more importantly, it unburdens mmh of the whole field of
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	202 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	203 There is no more need for concern with changes in network transfer.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	204 This independence is gained by depending on an external program
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	205 that covers the field.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	206 Today, this is a reasonable exchange.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	207 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	208 .\" XXX ueberleitung ???
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	209 Functionality can be added in three different ways:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	210 .LI 1
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	211 Implementing the function in the project itself.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	212 .LI 2
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	213 Depending on a library that provides the function.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	214 .LI 3
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	215 Depending on a program that provides the function.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	216 .LP
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	217 .\" XXX Rework sentence
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	218 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	219 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	220 and development work,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	221 it increases the project's independence of other software the most.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	222 Using libraries or external programs requires less maintenance work
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	223 but introduces dependencies on external software.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	224 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	225 but possibly limit the information exchange.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	226 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	227 thus information can be exchanged in a more flexible manner.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	228 Adding code to a project increases maintenance work.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	229 .\" XXX ref
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	230 Implementing complex functions in the project itself adds
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	231 a lot of code.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	232 This should be avoided if possible.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	233 Hence, the dependencies only change in their character,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	234 not in their existence.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	235 In mmh, library dependencies on
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	236 .Pn libsasl2
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	237 and
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	238 .Pn libcrypto /\c
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	239 .Pn libssl
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	240 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	241 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	242 dependencies.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	243 Besides providing stronger separation and greater flexibility,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	244 program dependencies also allowed
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	245 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	246 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	247 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	248 losing functionality is a convincing argument.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	249 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	250 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	251 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	252 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	253 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	254 of available documentation.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	255 Choices for MSAs range from full-featured MTAs such as
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	256 .\" XXX refs
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	257 .I Postfix ,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	258 over mid-size MTAs such as
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	259 .I masqmail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	260 and
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	261 .I dma ,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	262 to small forwarders such as
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	263 .I ssmtp
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	264 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	265 .I nullmailer .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	266 Choices for MRAs include
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	267 .I fetchmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	268 .I getmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	269 .I mpop
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	270 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	271 .I fdm .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	272
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	273
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	274 .H2 "Non-MUA Tools
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	275 .P
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	276 One goal of mmh is to remove the tools that are not part of the MUA's task.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	277 Further more, any tools that don't significantly improve the MUA's job
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	278 should be removed.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	279 Loosely related and rarely used tools distract from the lean appearance.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	280 They require maintenance work without adding much to the core task.
125 0e102cec0c73 s/stream-line/streamline/; s/motorbike/motorcycle/ markus schnalke <meillo@marmaro.de> parents: 124 diff changeset	281 By removing these tools, the project shall become more streamlined
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	282 and focused.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	283 In mmh, the following tools are not available anymore:
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	284 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	285 .Pn conflict
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	286 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	287 .Ci 8b235097cbd11d728c07b966cf131aa7133ce5a9
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	288 because it is a mail system maintenance tool that is not MUA-related.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	289 It even checked
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	290 .Fn /etc/passwd
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	291 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	292 .Fn /etc/group
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	293 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	294 A tool like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	295 .Pn conflict
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	296 is surely useful, but it should not be shipped with mmh.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	297 .\" XXX historic reasons?
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	298 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	299 .Pn rcvtty
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	300 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	301 .Ci 14767c94b3827be7c867196467ed7aea5f6f49b0
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	302 because its use case of writing to the user's terminal
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	303 on receival of mail is obsolete.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	304 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	305 .Ev MAILPATH
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	306 variable or graphical notifications are technically more appealing.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	307 Writing directly to terminals is hardly ever desired today.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	308 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	309 .Pn write
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	310 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	311 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	312 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	313 VE
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	314 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	315 .Pn viamail
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	316 .\" XXX was macht viamail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	317 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	318 .Ci eda72d6a7a7c20ff123043fb7f19c509ea01f932
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	319 when the new attachment system was activated, because
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	320 .Pn forw
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	321 could then cover the task itself.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	322 The program
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	323 .Pn sendfiles
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	324 was rewritten as a shell script wrapper around
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	325 .Pn forw .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	326 .Ci 0e82199cf3c991a173e0ac8aa776efdb3ded61e6
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	327 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	328 .Pn msgchk
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	329 .\" XXX was macht msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	330 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	331 .Ci bb9360ead7eb7a3fedcce2eeedfc660014e41dbe ,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	332 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	333 A call to
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	334 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	335 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	336 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	337 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	338 VE
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	339 It did distinguish between old and new mail, but
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	340 these details can be retrieved with
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	341 .Pn stat (1),
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	342 too.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	343 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	344 in a similar way, if truly necessary.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	345 As mmh's
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	346 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	347 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	348 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	349 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	350 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	351 .Pn msh
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	352 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	353 .Ci 916690191222433a6923a4be54b0d8f6ac01bd02
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	354 because the tool was in conflict with the philosophy of MH.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	355 It provided an interactive shell to access the features of MH,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	356 but it wasn't just a shell tailored to the needs of mail handling.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	357 Instead, it was one large program that had several MH tools built in.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	358 This conflicts with the major feature of MH of being a tool chest.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	359 .Pn msh 's
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	360 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	361 be popular.
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	362 .P
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	363 Removing
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	364 .Pn msh
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	365 together with the truly archaic code relicts
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	366 .Pn vmh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	367 and
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	368 .Pn wmh
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	369 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	370 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	371 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	372 for the same functionality is an advantage.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	373 Less code means less bugs and less maintenance work.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	374 As
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	375 .Pn rcvtty
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	376 and
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	377 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	378 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	379 why should one keep them?
125 0e102cec0c73 s/stream-line/streamline/; s/motorbike/motorcycle/ markus schnalke <meillo@marmaro.de> parents: 124 diff changeset	380 Removing them streamlines mmh.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	381 .Pn viamail 's
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	382 use case is now partly obsolete and partly covered by
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	383 .Pn forw ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	384 hence there's no reason to still maintain it.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	385 .Pn conflict
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	386 is not related to the mail client, and
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	387 .Pn msh
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	388 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	389 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	390 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	391 Finally, there is
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	392 .Pn slocal .
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	393 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	394 is an MDA and thus not directly MUA-related.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	395 It should be removed from mmh, because including it conflicts with
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	396 the idea that mmh is a MUA only.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	397 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	398 should rather become a separate project.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	399 However,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	400 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	401 provides rule-based processing of messages, like filing them into
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	402 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	403 Although
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	404 .Pn slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	405 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	406 technical area (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	407 .Cf mail-transfer-facilities ),
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	408 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	409 As
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	410 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	411 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	412 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	413 .Pn slocal .
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	414 For anyone not using MH,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	415 .Pn slocal
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	416 would become yet another independent MDA, like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	417 .I procmail .
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	418 Then
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	419 .Pn slocal
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	420 could be installed without the complete MH system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	421 Likewise, mmh users could decide to use
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	422 .I procmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	423 without having a second, unused MDA,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	424 .Pn slocal ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	425 installed.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	426 That appears to be conceptionally the best solution.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	427 Yet,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	428 .Pn slocal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	429 is not split off.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	430 I defer the decision over
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	431 .Pn slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	432 out of a need for deeper investigation.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	433 In the meanwhile, it remains part of mmh.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	434 However, its continued existence is not significant because
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	435 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	436 is unrelated to the rest of the project.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	437
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	438
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	439
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	440 .H2 "Displaying Messages
155 75f20c925999 Fixed macro typo; and added typo fix found by Boris. markus schnalke <meillo@marmaro.de> parents: 154 diff changeset	441 .Id mhshow
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	442 .P
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	443 Since the very beginning, already in the first concept paper,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	444 .\" XXX ref!!!
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	445 .Pn show
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	446 had been MH's message display program.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	447 .Pn show
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	448 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	449 .Pn mhl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	450 to have the files formatted.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	451 With MIME, this approach wasn't sufficient anymore.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	452 MIME messages can consist of multiple parts. Some parts are not
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	453 directly displayable and text content might be encoded in
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	454 foreign charsets.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	455 .Pn show 's
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	456 understanding of messages and
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	457 .Pn mhl 's
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	458 display capabilities couldn't cope with the task any longer.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	459 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	460 Instead of extending these tools, additional tools were written from
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	461 scratch and added to the MH tool chest.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	462 Doing so is encouraged by the tool chest approach.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	463 Modular design is a great advantage for extending a system,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	464 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	465 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	466 .Pn mhn .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	467 The command
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	468 .Cl "mhn -show 42
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	469 would show the MIME message numbered 42.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	470 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	471 the split of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	472 .Pn mhn
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	473 into a set of specialized tools, which together covered the
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	474 multiple aspects of MIME.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	475 One of them was
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	476 .Pn mhshow ,
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	477 which replaced
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	478 .Cl "mhn -show" .
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	479 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	480 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	481 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	482 .Pn show
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	483 and
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	484 .Pn mhshow .
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	485 To ease the life of users,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	486 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	487 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	488 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	489 if displaying the message would be beyond
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	490 .Pn show 's
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	491 abilities.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	492 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	493 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	494 (possibly through
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	495 .Pn next
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	496 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	497 .Pn prev )
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	498 and get the message printed with either
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	499 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	500 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	501 .Pn mhshow ,
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	502 whatever was more appropriate.
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	503 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	504 Having two similar tools for essentially the same task is redundant.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	505 Usually,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	506 users wouldn't distinguish between
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	507 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	508 and
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	509 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	510 in their daily mail reading.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	511 Having two separate display programs was therefore mainly unnecessary
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	512 from a user's point of view.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	513 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	514 to ensure that the programs behaved in a similar way,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	515 because they were used like a single tool.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	516 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	517 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	518 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	519 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	520 As
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	521 .Pn mhshow
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	522 had already 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	523 to drop
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	524 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	525 in favor of using
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	526 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	527 exclusively.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	528 .Ci 4c1efddfd499300c7e74263e57d8aa137e84c853
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	529 Removing
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 is no loss in function, because functionally
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 covers it completely.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	534 The old behavior of
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	535 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	536 can still be emulated with the simple command line:
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	537 .VS
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	538 mhl `mhpath c`
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	539 VE
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	540 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	541 For convenience,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	542 .Pn mhshow
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	543 was renamed to
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	544 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	545 after
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	546 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	547 was gone.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	548 It is clear that such a rename may confuse future developers when
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	549 trying to understand the history.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	550 Nevertheless, I consider the convenience on the user's side,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	551 to call
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	552 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	553 when they want a message to be displayed, to outweigh the inconvenience
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	554 on the developer's side when understanding the project history.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	555 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	556 To prepare for the transition,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	557 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	558 was reworked to behave more like
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	559 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	560 first.
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	561 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	562 .Cf mhshow )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	563 .\" XXX code commits?
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	564 Once the tools behaved more alike, the replacing appeared to be
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	565 even more natural.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	566 Today, mmh's new
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	567 .Pn show
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	568 has become the one single message display program once more,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	569 with the difference
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	570 that today it handles MIME messages as well as non-MIME messages.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	571 The outcome of the transition is one program less to maintain,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	572 no second display program for users to deal with,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	573 and less system complexity.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	574 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	575 Still, removing the old
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	576 .Pn show
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	577 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	578 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	579 .Pn show ,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	580 .\" XXX
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	581 however there is no alternative;
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	582 supporting MIME demands higher essential complexity.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	583
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	584 .ig
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	585 XXX
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	586 Consider including text on scan listings here
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	587
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	588 Scan listings shall not contain body content. Hence, removed this feature.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	589 Scan listings shall operator on message headers and non-message information
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	590 only. Displaying the beginning of the body complicates everything too much.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	591 That's no surprise, because it's something completely different. If you
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	592 want to examine the body, then use show(1)/mhshow(1).
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	593 Changed the default scan formats accordingly.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	594 .Ci 70b2643e0da8485174480c644ad9785c84f5bff4
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	595 ..
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	596
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	597
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	598
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	599
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	600 .H2 "Configure Options
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	601 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	602 Customization is a double-edged sword.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	603 It allows better suiting setups, but not for free.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	604 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	605 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	606 more possible setups and especially corner cases.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	607 Additionally, there is the cost of choice itself.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	608 The code complexity directly affects the developers.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	609 Less tested code affects both, users and developers.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	610 The problem of choice affects the users, for once by having to choose,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	611 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	612 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	613 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	614 I have reduced the number of project-specific configure options from
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	615 fifteen to three.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	616
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	617 .U3 "Mail Transfer Facilities
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	618 .P
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	619 With the removal of the mail transfer facilities five configure
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	620 options vanished:
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	621 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	622 The switches
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	623 .Sw --with-tls
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	624 and
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	625 .Sw --with-cyrus-sasl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	626 had activated the support for transfer encryption and authentication.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	627 .\" XXX cf
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	628 .\" XXX gruende kurz wiederholen
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	629 This is not needed anymore.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	630 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	631 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	632 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	633 .\" XXX cf
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	634 .\" XXX ``For the same reason ...''
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	635 The configure switch
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	636 .Sw --enable-pop
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	637 activated the message retrieval facility.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	638 The code area that would be conditionally compiled in for TLS and SASL
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	639 support had been small.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	640 The conditionally compiled code area for POP support had been much larger.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	641 Whereas the code base changes would only slightly change on toggling
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	642 TLS or SASL support, it changed much on toggling POP support.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	643 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	644 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	645 one that needed to be tested.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	646 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	647 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	648 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	649 of the original program.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	650 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	651 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	652 Two other options only specified default configuration values:
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	653 .Sw --with-mts
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	654 defined the default transport service.
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	655 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	656 With
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	657 .Sw --with-smtpservers
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	658 default SMTP servers could be specified.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	659 .Ci 128545e06224233b7e91fc4c83f8830252fe16c9
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	660 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	661 .\" XXX code ref
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	662 In mmh, all messages are handed over to
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	663 .Pn sendmail
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	664 for transportation.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	665
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	666
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	667 .U3 "Backup Prefix
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	668 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	669 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	670 filenames to tag them as deleted.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	671 By default it had been the comma character `\f(CW,\fP'.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	672 .\" XXX Zeitlich ordnen
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	673 In July 2000, Kimmo Suominen introduced
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	674 the configure option
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	675 .Sw --with-hash-backup
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	676 to change the default to the hash symbol `\f(CW#\fP'.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	677 The choice was probably personal preference, because first, the
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	678 option was named
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	679 .Sw --with-backup-prefix.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	680 and had the prefix symbol as argument.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	681 But giving the hash symbol as argument caused too many problems
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	682 for Autoconf,
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	683 thus the option was limited to use the hash symbol as the default prefix.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	684 This supports the assumption, that the choice for the hash was
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	685 personal preference only.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	686 Being related or not, words that start with the hash symbol
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	687 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	688 Thus, the command line
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	689 .Cl "rm #13 #15
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	690 calls
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	691 .Pn rm
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	692 without arguments because the first hash symbol starts the comment
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	693 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	694 To delete the backup files,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	695 .Cl "rm ./#13 ./#15"
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	696 needs to be used.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	697 Using the hash as backup prefix can be seen as a precaution against
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	698 data loss.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	699 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	700 First, I removed the configure option but added the profile entry
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	701 .Pe backup-prefix ,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	702 which allows to specify an arbitrary string as backup prefix.
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	703 .Ci 6c40d481d661d532dd527eaf34cebb6d3f8ed086
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	704 Profile entries are the common method to change mmh's behavior.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	705 This change did not remove the choice but moved it to a location where
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	706 it suited better.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	707 .P
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	708 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	709 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	710 .Cf trash-folder )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	711 removed the need for the backup prefix completely.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	712 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	713 .Ci ca0b3e830b86700d9e5e31b1784de2bdcaf58fc5
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	714
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	715
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	716 .U3 "Editor and Pager
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	717 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	718 The two configure options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	719 .CW --with-editor=EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	720 .CW --with-pager=PAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	721 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	722 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	723 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	724 different systems.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	725 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	726 The programs
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	727 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	728 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	729 .Pn more
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	730 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	731 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	732 (The specifications for
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	733 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	734 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	735 .Pn more
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	736 appeared in
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	737 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	738 posix 1987
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	739 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	740 and,
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 1992
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 respectively.)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	745 As a first step, these two tools were hard-coded as defaults.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	746 .Ci 5d43a99db70c12a673028c7758c20cbe3e13ef5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	747 Not changed were the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	748 .Pe editor
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	749 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	750 .Pe moreproc
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	751 profile entries, which allowed the user to override the system defaults.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	752 Later, the concept was reworked to respect the standard environment
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	753 variables
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	754 .Ev VISUAL
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	755 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	756 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	757 if they are set.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	758 Today, mmh determines the editor to use in the following order,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	759 taking the first available and non-empty item:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	760 .LI 1
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	761 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	762 .Ev MMHEDITOR
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	763 .LI 2
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	764 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	765 .Pe Editor
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	766 .LI 3
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	767 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	768 .Ev VISUAL
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	769 .LI 4
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	770 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	771 .Ev EDITOR
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	772 .LI 5
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	773 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	774 .Pn vi .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	775 .LP
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	776 .Ci f85f4b7ae62e3d05a945dcd46ead51f0a2a89a9b
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	777 .P
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	778 The pager to use is determined in a similar order,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	779 also taking the first available and non-empty item:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	780 .LI 1
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	781 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	782 .Ev MMHPAGER
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	783 .LI 2
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	784 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	785 .Pe Pager
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	786 (replaces
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	787 .Pe moreproc )
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	788 .LI 3
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	789 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	790 .Ev PAGER
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	791 .LI 4
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	792 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	793 .Pn more .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	794 .LP
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	795 .Ci 0c4214ea2aec6497d0d67b436bbee9bc1d225f1e
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	796 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	797 By respecting the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	798 .Ev VISUAL /\c
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	799 .Ev EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	800 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	801 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	802 environment variables,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	803 the new behavior confirms better to the common style on Unix systems.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	804 Additionally, the new approach is more uniform and clearer to users.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	805
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	806
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	807 .U3 "ndbm
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	808 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	809 .Pn slocal
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	810 used to depend on
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	811 .I ndbm ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	812 a database library.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	813 The database is used to store the `\fLMessage-ID\fP's of all
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	814 messages delivered.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	815 This enables
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	816 .Pn slocal
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	817 to suppress delivering the same message to the same user twice.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	818 (This features was enabled by the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	819 .Sw -suppressdup
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	820 switch.)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	821 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	822 A variety of versions of the database library exist.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	823 .[
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	824 wolter unix incompat notes dbm
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	825 .]
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	826 Complicated autoconf code was needed to detect them correctly.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	827 Further more, the configure switches
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	828 .Sw --with-ndbm=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	829 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	830 .Sw --with-ndbmheader=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	831 were added to help with difficult setups that would
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	832 not be detected automatically or correctly.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	833 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	834 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	835 .Pn slocal ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	836 the dependency on
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	837 .I ndbm
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	838 vanished and 120 lines of complex autoconf code could be saved.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	839 .Ci ecd6d6a20cb7a1507e3a20d6c4cb3a1cf14c6bbf
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	840 The change removed functionality too, but that is minor to the
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	841 improvement by dropping the dependency and the complex autoconf code.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	842 .\" XXX argument: slocal ist sowieso nicht teil vom mmh kern
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	843
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	844 .U3 "mh-e Support
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	845 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	846 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	847 .Sw --disable-mhe
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	848 was removed when the mh-e support was reworked.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	849 Mh-e is the Emacs front-end to MH.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	850 It requires MH to provide minor additional functions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	851 The
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	852 .Sw --disable-mhe
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	853 configure option could switch these extensions off.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	854 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	855 only the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	856 .Sw -build
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	857 switches of
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	858 .Pn forw
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	859 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	860 .Pn repl
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	861 are left to be mh-e extensions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	862 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	863 In consequence, the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	864 .Sw --disable-mhe
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	865 configure option was removed
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	866 .Ci a7ce7b4a580d77b6c2c4d980812beb589aa4c643
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	867 Removing the option removed a second code setup that would have
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	868 needed to be tested.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	869 .\" XXX datum?
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	870 This change was first accomplished in nmh and thereafter merged into mmh.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	871 .P
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	872 The interface changes in mmh require mh-e to be adjusted in order
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	873 to be able to use mmh as back-end.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	874 This will require minor changes to mh-e, but removing the
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	875 .Sw -build
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	876 switches would require more rework.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	877
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	878 .U3 "Masquerading
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	879 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	880 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	881 .Sw --enable-masquerade
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	882 could take up to three arguments:
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	883 `draft_from', `mmailid', and `username_extension'.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	884 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	885 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	886 .Pn post
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	887 command, which provided an MSA.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	888 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	889 this field anymore.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	890 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	891 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	892 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	893 .I mmailid
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	894 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	895 available in the original MH.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	896 It provided a
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	897 .I username
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	898 to
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	899 .I fakeusername
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	900 mapping, based on the password file's GECOS field.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	901 The man page
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	902 .Mp mh-tailor(5)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	903 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	904 .QS
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	905 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	906 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	907 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	908 `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	909 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	910 ``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	911 .QE
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	912 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	913 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	914 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	915 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	916 does the reverse mapping for incoming mail (aliasing), too.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	917 Further more, 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	918 mail software on the system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	919 Hence, mmailid masquerading was removed.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	920 .Ci 0836c8000ccb34b59410ef1c15b1b7feac70ce5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	921 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	922 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	923 .I username_extension
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	924 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	925 specified by the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	926 .Ev USERNAME_EXTENSION
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	927 environment variable, to it.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	928 This provided support for the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	929 .I user-extension
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	930 feature of qmail and the similar
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	931 .I "plussed user
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	932 processing of sendmail.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	933 The decision to remove this username_extension masquerading was
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	934 motivated by the fact that
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	935 .Pn spost
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	936 hadn't supported it already.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	937 .Ci 2abae0bfd0ad5bf898461e50aa4b466d641f23d9
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	938 Username extensions are possible in mmh, but less convenient to use.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	939 .\" XXX covered by next paragraph
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	940 .\" XXX format file %(getenv USERNAME_EXTENSION)
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	941 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	942 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	943 .I draft_from
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	944 masquerading type instructed
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	945 .Pn post
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	946 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	947 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	948 header field as SMTP envelope sender.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	949 Sender addresses could be replaced completely.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	950 .Ci b14ea6073f77b4359aaf3fddd0e105989db9
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	951 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	952 with technical differences.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	953 As mmh does not transfer messages itself, the local MTA has final control
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	954 over the sender's address. Any masquerading mmh introduces may be reverted
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	955 by the MTA.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	956 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	957 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	958 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	959 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	960 header field and thereby propose
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	961 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	962 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	963 address for use as envelope sender address.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	964 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	965 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	966 message header (\c
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	967 .Pn sendmail 's
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	968 .Sw -t
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	969 switch).
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	970 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	971 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	972 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	973 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	974
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	975 .U3 "Remaining Options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	976 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	977 Two configure options remain in mmh.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	978 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	979 .Sw --with-locking=[dot\|fcntl\|flock\|lockf] .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	980 The idea of removing all methods except the portable dot locking
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	981 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	982 requires deeper technical investigation into the topic.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	983 The other option,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	984 .Sw --enable-debug ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	985 compiles the programs with debugging symbols and does not strip them.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	986 This option is likely to stay.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	987
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	988
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	989
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	990
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	991 .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	992 .P
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	993 The command line switches of MH tools is similar to the X Window style.
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	994 .\" XXX ref
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	995 They are words, introduced by a single dash.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	996 For example:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	997 .Cl "-truncate" .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	998 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	999 .Sw -help ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1000 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	1001 .Sw -Version
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1002 (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	1003 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1004 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	1005 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	1006 In most cases, doing something in exactly one way is too limiting.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1007 If there is basically one task to accomplish, but it should be done
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1008 in various ways, switches are a good approach to alter the behavior
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1009 of a program.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1010 Changing the behavior of programs provides flexibility and customization
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1011 to users, but at the same time it complicates the code, documentation and
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1012 usage of the program.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1013 .\" XXX: Ref
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1014 Therefore, the number of switches should be kept small.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1015 A small set of well-chosen switches does no harm.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1016 But usually, the number of switches increases over time.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1017 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	1018 problem of MH:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1019 .[ [
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1020 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1021 .], p. 12]
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1022 .QS
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1023 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	1024 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	1025 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	1026 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	1027 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	1028 .QP
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1029 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	1030 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	1031 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	1032 .QE
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1033 .P
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1034 Being reluctant to adding new switches \(en or `options',
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1035 as Rose and Romine call them \(en is one part of a counter-action,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1036 the other part is removing hardly used switches.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1037 Nmh's tools had lots of switches already implemented,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1038 hence, cleaning up by removing some of them was the more important part
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1039 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	1040 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	1041 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	1042 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	1043 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	1044 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	1045 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	1046 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	1047 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	1048 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	1049 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	1050 ``[...]
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1051 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1052 will no doubt acquire an endless number of switches in the years to come.''
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1053 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	1054 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	1055 but this is not practical.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1056 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	1057 them strictly.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1058 Nevertheless, removing obsolete switches still is an effective approach
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1059 to deal with the problem.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1060 Working on an experimental branch without an established user base,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1061 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	1062 functions.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1063 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1064 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	1065 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1066 In nmh, they increased up to 32 visible and 12 hidden ones.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1067 At the time of writing, no more than 7 visible switches and 1 hidden switch
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1068 have remained in mmh's
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1069 .Pn send .
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1070 (These numbers include two generic switches, help and version.)
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1071 .P
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1072 The 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	1073 that is available in both nmh and mmh.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1074 The tools are sorted by the number of switches they had in nmh.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1075 Visible and hidden switches were counted,
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1076 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	1077 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	1078 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	1079 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	1080 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	1081 has 4 now.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1082 The total number of functional switches in mmh dropped from 465
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1083 to 234.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1084
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1085 .KS
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1086 .in 1c
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1087 .so input/switches.grap
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1088 .KE
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1089
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1090 .P
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1091 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	1092 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	1093 Sometimes, however, the work flow was the other way:
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1094 I looked through the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1095 .Mp mh-chart (7)
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1096 man page to identify the tools with apparently too many switches.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1097 Then considering the value of each of the switches by examining
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1098 the tool's man page and source code, aided by recherche and testing.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1099 This way, the removal of functions was suggested by the aim to reduce
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1100 the number of switches per command.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1101
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1102
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1103 .U3 "Draft Folder Facility
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1104 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1105 A change early in the project was the complete transition from
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1106 the single draft message to the draft folder facility.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1107 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1108 .\" XXX ref to section ...
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1109 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	1110 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	1111 .[
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1112 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1113 .]
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1114 Since then, the facility had existed but was inactive by default.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1115 The default activation and the related rework of the tools made it
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1116 possible to remove the
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1117 .Sw -[no]draftfolder ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1118 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1119 .Sw -draftmessage
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1120 switches from
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1121 .Pn comp ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1122 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1123 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1124 .Pn dist ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1125 .Pn whatnow ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1126 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1127 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1128 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1129 The only flexibility removed with this change is having multiple
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1130 draft folders within one profile.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1131 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	1132 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	1133 .Sw -draft
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1134 switch of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1135 .Pn anno ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1136 .Pn refile ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1137 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1138 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1139 was removed.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1140 The special treatment of \fIthe\fP draft message became irrelevant after
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1141 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	1142 (cf. Sec.
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1143 .Cf draft-folder )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1144 Furthermore,
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1145 .Pn comp
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1146 no longer needs a
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1147 .Sw -file
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1148 switch as the draft folder facility together with the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1149 .Sw -form
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1150 switch are sufficient.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1151
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1152
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1153 .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	1154 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1155 .Pn anno
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1156 had the switches
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1157 .Sw -[no]inplace
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1158 to either annotate the message in place and thus preserve hard links,
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1159 or annotate a copy to replace the original message, breaking hard links.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1160 Following the assumption that linked messages should truly be the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1161 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	1162 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1163 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	1164 .Sw -inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1165 was made the only behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1166 .Ci c8195849d2e366c569271abb0f5f60f4ebf0b4d0
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1167 The
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1168 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1169 switches of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1170 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1171 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1172 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1173 .Pn dist
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1174 could be removed, too, as they were simply passed through to
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1175 .Pn anno .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1176 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1177 .Pn burst
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1178 also had
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1179 .Sw -[no]inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1180 switches, but with different meaning.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1181 With
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1182 .Sw -inplace ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1183 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	1184 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	1185 after this message, renumbering all following messages.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1186 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	1187 in practice, it usually consists of an end-of-digest marker only.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1188 Nontheless, this behavior appeared less elegant than the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1189 .Sw -noinplace
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1190 behavior, which already had been the default.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1191 Nmh's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1192 .Mp burst (1)
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1193 man page reads:
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1194 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1195 If
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1196 .Sw -noinplace
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1197 is given, each digest is preserved, no table
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1198 of contents is produced, and the messages contained within
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1199 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	1200 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	1201 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1202 .LP
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1203 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	1204 .Sw -inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1205 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	1206 it caused.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1207 .Sw -noinplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1208 was chosen to be the definitive behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1209 .Ci 68a686adeb39223a5e1ad35e4a24890ec053679d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1210
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1211
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1212 .U3 "Forms and Format Strings
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1213 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1214 Historically, the tools that had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1215 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1216 switches to supply a form file had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1217 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1218 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	1219 on the command line directly.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1220 In consequence, the following two lines equaled:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1221 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1222 scan -form scan.mailx
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1223 scan -format "`cat .../scan.mailx`"
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1224 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1225 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1226 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1227 switches were dropped in favor for extending the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1228 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1229 switches.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1230 .Ci f51956be123db66b00138f80464d06f030dbb88d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1231 If their argument starts with an equal sign (`='),
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1232 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	1233 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	1234 Thus, now the following two lines equal:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1235 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1236 scan -form scan.mailx
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1237 scan -form "=`cat .../scan.mailx`"
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1238 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1239 This rework removed the prefix collision between
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1240 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1241 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1242 .Sw -format .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1243 Now, typing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1244 .Sw -fo
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1245 suffices to specify form or format string.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1246 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1247 The different meaning of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1248 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1249 for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1250 .Pn repl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1251 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1252 .Pn forw
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1253 was removed in mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1254 .Pn forw
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1255 was completely switched to MIME-type forwarding, thus removing the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1256 .Sw -[no]format .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1257 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1258 For
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1259 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1260 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1261 .Sw -[no]format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1262 switches were reworked to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1263 .Sw -[no]filter
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1264 switches.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1265 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1266 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1267 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1268 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1269 .Pn send
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1270 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1271 .Pn post ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1272 which had a third meaning,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1273 were removed likewise.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1274 .Ci f3cb7cde0e6f10451b6848678d95860d512224b9
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1275 Eventually, the ambiguity of the
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 switches was resolved by not anymore having any such switch in mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1278
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1279
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1280 .U3 "MIME Tools
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1281 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1282 The MIME tools, which were once part of
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1283 .Pn mhn
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1284 .\" XXX
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1285 (whatever that stood for),
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1286 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	1287 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1288 .Sw -[no]realsize
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1289 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1290 .Pn mhbuild
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1291 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1292 .Pn mhlist
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1293 were removed, doing real size calculations always now
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1294 .Ci 8d8f1c3abc586c005c904e52c4adbfe694d2201c ,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1295 as nmh's
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1296 .Mp mhbuild (1)
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1297 man page states
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1298 ``This provides an accurate count at the expense of a small delay.''
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1299 This small delay is not noticable on modern systems.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1300 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1301 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1302 .Sw -[no]check
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1303 switches were removed together with the support for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1304 .Hd Content-MD5
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1305 header fields.
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 rfc 1864
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1308 .]
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1309 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1310 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1311 .Cf content-md5 )
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1312 .P
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]ebcdicsafe
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1315 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1316 .Sw -[no]rfc934mode
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1317 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1318 .Pn mhbuild
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1319 were removed because they are considered obsolete.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1320 .Ci 01a3480928da485b4d6109d36d751dfa71799d58
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1321 .Ci 3363e2624dce0eb8164cf8b3f1ab385c8ff72e88
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1322 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1323 Content caching of external MIME parts, activated with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1324 .Sw -rcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1325 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1326 .Sw -wcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1327 switches was completely removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1328 .Ci d1fefd9f614e4dc3cda16da6c69133c1b2005269
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1329 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	1330 for them appears to be unnecessary.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1331 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1332 In pre-MIME times,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1333 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1334 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	1335 Therefore,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1336 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1337 could be simplified to a large extend, reducing the number of its
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1338 switches from 21 to 6.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1339 .Ci 350ad6d3542a07639213cf2a4fe524e829c1e7b6
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1340 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1341
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1342
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1343
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1344
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1345 .U3 "Header Printing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1346 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1347 .Pn folder 's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1348 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	1349 displaying the header line makes little sense.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1350 Hence, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1351 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1352 switch was removed and headers are never printed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1353 .Ci 601cc73d1fa05ce96faa728f036d6c51b91701c7
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
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1356 .Pn mhlist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1357 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1358 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1359 switches were removed, too.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1360 .Ci b24f96523aaf60e44e04a3ffb1d22e69a13a602f
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1361 But in this case headers are always printed,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1362 because the output is not self-explaining.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1363 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1364 .Pn scan
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1365 also had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1366 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1367 switches.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1368 Printing the header had been sensible until the introduction of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1369 format strings made it impossible to display the column headings.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1370 Only the folder name and the current date remained to be printed.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1371 As this information can be perfectly retrieved by
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1372 .Pn folder
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1373 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1374 .Pn date ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1375 consequently, the switches were removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1376 .Ci c477dc5d1d03fa6d9a8ab3dd3508c63cbddc044e
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 By removing all
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1379 .Sw -header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1380 switches, the collision with
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1381 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1382 on the first two letters was resolved.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1383 Currently,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1384 .Sw -h
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1385 evaluates to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1386 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1387 for all tools of mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1388
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1389
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1390 .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	1391 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1392 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1393 .Sw -noedit
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1394 switch of
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1395 .Pn comp ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1396 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1397 .Pn forw ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1398 .Pn dist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1399 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1400 .Pn whatnow
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1401 was removed, but it can now be replaced by specifying
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1402 .Sw -editor
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1403 with an empty argument.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1404 .Ci 75fca31a5b9d5c1a99c74ab14c94438d8852fba9
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1405 (Specifying
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1406 .Cl "-editor /bin/true
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1407 is nearly the same, only differing by the previous editor being set.)
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1408 .P
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1409 The more important change is the removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1410 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1411 switch.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1412 .Ci ee4f43cf2ef0084ec698e4e87159a94c01940622
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1413 This switch had introduced an awkward behavior, as explained in nmh's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1414 man page for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1415 .Mp comp (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1416 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1417 The
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1418 .Sw -editor
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1419 .Ar editor
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1420 switch indicates the editor to use for
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1421 the initial edit. Upon exiting from the editor,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1422 .Pn comp
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1423 will invoke the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1424 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1425 program. See
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1426 .Mp whatnow (1)
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1427 for a discussion of available options.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1428 The invocation of this program can be
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1429 inhibited by using the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1430 .Sw -nowhatnowproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1431 switch. (In truth of fact, it is the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1432 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1433 program which starts the initial edit.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1434 Hence,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1435 .Sw -nowhatnowproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1436 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	1437 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1438 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1439 Effectively, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1440 .Sw -nowhatnowproc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1441 switch creates only a draft message.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1442 As
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1443 .Cl "-whatnowproc /bin/true
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1444 causes the same behavior, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1445 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1446 switch was removed for being redundant.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1447 Likely, the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1448 .Sw -nowhatnowproc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1449 switch was intended to be used by front-ends.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1450
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1451
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1452
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1453 .U3 "Various
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1454 .BU
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1455 With the removal of MMDF maildrop format support,
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1456 .Pn packf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1457 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1458 .Pn rcvpack
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1459 no longer needed their
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1460 .Sw -mbox
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1461 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1462 .Sw -mmdf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1463 switches.
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1464 .Sw -mbox
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1465 is the sole behavior now.
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1466 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	1467 Further rework in both tools made the
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1468 .Sw -file
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	1469 switch unnecessary.
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1470 .Ci ca1023716d4c2ab890696f3e41fa0d94267a940e
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1471
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1472 .BU
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1473 Mmh's tools will no longer clear the screen (\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1474 .Pn scan 's
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1475 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1476 .Pn mhl 's
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1477 .Sw -[no]clear
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1478 switches
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1479 .Ci e57b17343dcb3ff373ef4dd089fbe778f0c7c270
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1480 .Ci 943765e7ac5693ae177fd8d2b5a2440e53ce816e ).
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1481 Neither will
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1482 .Pn mhl
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1483 ring the bell (\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1484 .Sw -[no]bell
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1485 .Ci e11983f44e59d8de236affa5b0d0d3067c192e24 )
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1486 nor page the output itself (\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1487 .Sw -length
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1488 .Ci 5b9d883db0318ed2b84bb82dee880d7381f99188 ).
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1489 .\" XXX Ref
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1490 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	1491 .Sw -[no]moreproc
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1492 command line switches for
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1493 .Pn mhl
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1494 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1495 .Pn show /\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1496 .Pn mhshow .
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1497 .Ci 39e87a75b5c2d3572ec72e717720b44af291e88a
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1498
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1499 .BU
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1500 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	1501 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1502 switch was renamed to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1503 .Sw -Version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1504 (with capital `V').
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1505 .Ci 32b2354dbaf4bf934936eb5b102a4a3d2fdd209a
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1506 Every program has the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1507 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1508 switch but its first three letters collided with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1509 .Sw -verbose
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1510 switch, present in many programs.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1511 The rename solved this problem once for all.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1512 Although this rename breaks a basic interface, having the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1513 .Sw -V
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1514 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	1515
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1516 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1517 .Sw -[no]preserve
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1518 of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1519 .Pn refile
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1520 was removed
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1521 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1522 because what use was it anyway?
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1523 Quoting nmh's man page
165 ea6eec1722d1 Improvement by Boris Kraut. markus schnalke <meillo@marmaro.de> parents: 164 diff changeset	1524 .Mp refile (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1525 .QS
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1526 Normally when a message is refiled, for each destination
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1527 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	1528 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	1529 .Sw -preserv
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1530 [sic!] switch will override this message renaming, and try
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1531 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	1532 particular folder occurs when using the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1533 .Sw -preserve
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1534 switch, then
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1535 .Pn refile
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1536 will use the next available message number which
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1537 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	1538 .QE
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1539
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1540 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1541 The removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1542 .Sw -[no]reverse
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1543 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1544 .Pn scan
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1545 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1546 is a bug fix, supported by the comments
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1547 ``\-[no]reverse under #ifdef BERK (I really HATE this)''
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1548 by Rose and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1549 ``Lists messages in reverse order with the `\-reverse' switch.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1550 This should be considered a bug.'' by Romine in the documentation.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1551 .\" XXX Ref: welche datei genau.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1552 The question remains why neither Rose and Romine had fixed this
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1553 bug in the eighties when they wrote these comments nor has anyone
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1554 thereafter.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1555
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1556
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1557 .ig
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1558
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1559 forw: [no]dashstuffing(mhl)
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1560
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1561 mhshow: [no]pause [no]serialonly
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1562
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1563 mhmail: resent queued
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1564 inc: snoop, (pop)
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1565
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1566 mhl: [no]faceproc folder sleep
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1567 [no]dashstuffing(forw) digest list volume number issue number
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1568
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1569 prompter: [no]doteof
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1570
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1571 refile: [no]preserve [no]unlink [no]rmmproc
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1572
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1573 send: [no]forward [no]mime [no]msgid
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1574 [no]push split [no]unique (sasl) width snoop [no]dashstuffing
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1575 attach attachformat
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1576 whatnow: (noedit) attach
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1577
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1578 slocal: [no]suppressdups
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1579
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1580 spost: [no]filter [no]backup width [no]push idanno
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1581 [no]check(whom) whom(whom)
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1582
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1583 whom: ???
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1584
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1585 ..
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1586
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1587
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1588 .ig
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1589
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1590 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1591 In the best case, all switches are unambiguous on the first character,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1592 or on the three-letter prefix for the `no' variants.
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1593 Reducing switch prefix collisions, shortens the necessary prefix length
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1594 the user must type.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1595 Having less switches helps best.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1596
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1597 ..
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1598
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1599
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1600 .\" XXX: whatnow prompt commands
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1601
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1602
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1603
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1604
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	1605 .\" --------------------------------------------------------------
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	1606 .H1 "Modernizing
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1607 .P
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1608 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	1609 increasingly extended.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1610 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	1611 existing behavior.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1612 Relicts from several decades have gathered in the code base,
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1613 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	1614 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	1615 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	1616 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	1617 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	1618 .Cf code-style .
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1619
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1620
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1621 .H2 "Code Relicts
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1622 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1623 My position regarding the removal of obsolete functions of mmh,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1624 .\" XXX ``in order to remove old code,''
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1625 is much more revolutional than the nmh community appreciates.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1626 Working on an experimental version, I was quickly able to drop
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1627 functionality I considered ancient.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1628 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	1629 Without the need to justify my decisions, I was able to rush forward.
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1630 In December 2011, Paul Vixie motivated the nmh developers to just
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1631 .\" XXX ugs
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1632 do the work:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1633 .[
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1634 paul vixie edginess nmh-workers
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1635 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1636 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1637 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	1638 discuss whether to keep using vfork, just note in [sic!] passing, [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1639 we don't need a separate branch for removing vmh
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1640 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	1641 or depending on pure ansi/posix ``libc''.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1642 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1643 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	1644 should just be modern. [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1645 let's push forward, aggressively.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1646 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1647 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1648 I did so already in the months before.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1649 I pushed forward.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1650 .\" XXX semicolon ?
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1651 I simply dropped the cruft.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1652 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1653 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	1654 careful thinking, but whether having had contact with this particular
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1655 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	1656 I explained my reasons in the commit messages
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1657 in the version control system.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1658 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	1659 if I have missed an important aspect.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1660 I was quick in dropping parts.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1661 I rather re-included falsely dropped parts than going at a slower pace.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1662 Mmh is experimental work; it required tough decisions.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1663 .\" XXX ``exp. work'' schon oft gesagt
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1664
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1665
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1666 .U3 "Forking
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	1667 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1668 Being a tool chest, MH creates many processes.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1669 In earlier times
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1670 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1671 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	1672 to be completely duplicated at once.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1673 This expensive work was especially unnecessary in the commonly occuring
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1674 case wherein the image is replaced by a call to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1675 .Fu exec()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1676 right after having forked the child process.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1677 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1678 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1679 system call was invented to speed up this particular case.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1680 It completely omits the duplication of the image.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1681 On old systems this resulted in significant speed ups.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1682 Therefore MH used
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1683 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1684 whenever possible.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1685 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1686 Modern memory management units support copy-on-write semantics, which make
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1687 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1688 almost as fast as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1689 .Fu vfork() .
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1690 The man page of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1691 .Mp vfork (2)
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1692 in FreeBSD 8.0 states:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1693 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1694 This system call will be eliminated when proper system sharing mechanisms
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1695 are implemented. Users should not depend on the memory sharing semantics
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1696 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	1697 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1698 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1699 Vixie supports the removal with the note that ``the last
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1700 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	1701 Eunice. that was 1987''.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1702 .[
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1703 nmh-workers vixie edginess
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1704 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1705 I replaced all calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1706 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1707 with calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1708 .Fu fork() .
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1709 .Ci 40821f5c1316e9205a08375e7075909cc9968e7d
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1710 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1711 Related to the costs of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1712 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1713 is the probability of its success.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1714 In the eighties, on heavy loaded systems, calls to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1715 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1716 were prone to failure.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1717 Hence, many of the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1718 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1719 calls in the code were wrapped into loops to retry the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1720 .Fu fork()
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1721 several times, to increase the chances to succeed, eventually.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1722 On modern systems, a failing
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1723 .Fu fork()
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1724 call is unusual.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1725 Hence, in the rare case when
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1726 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1727 fails, mmh programs simply abort.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1728 .Ci 5fbf37ee68e018998ada61eeab73e035b26834b6
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1729
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1730
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1731 .U3 "Header Fields
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1732 .BU
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1733 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1734 .Hd Encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1735 header field was introduced by RFC\\|822,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1736 but already marked as legacy in RFC\\|2822.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1737 Today, OpenPGP provides the basis for standardized exchange of encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1738 messages [RFC\\|4880, RFC\\|3156].
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1739 Hence, the support for
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1740 .Hd Encrypted
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1741 header fields is removed in mmh.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1742 .Ci 064527f7b57ab050e5af13e15ad99aeeab125857
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1743 .BU
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1744 The native support for
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1745 .Hd Face
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1746 header fields has been removed, as well.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1747 .Ci 8e5be81f784682822f5e868c1bf3c8624682bd23
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1748 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	1749 .Hd X-Face
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1750 header field in its intent,
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1751 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	1752 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	1753 it contains the hostname and UDP port where the image
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1754 date can be retrieved.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1755 There is even a third Face system,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1756 which is the successor of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1757 .Hd X-Face ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1758 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	1759 .Hd Face
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1760 header field.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1761 It was invented in 2005 and supports colored PNG images.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1762 None of the Face systems described here is popular today.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1763 Hence, mmh has no direct support for them.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1764 .BU
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1765 .Id content-md5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1766 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1767 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1768 header field was introduced by RFC\\|1864.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1769 It provides detection of data corruption during the transfer.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1770 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	1771 [RFC\\|1864].
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1772 The proper approach to verify content integrity in an
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	1773 end-to-end relationship is the use of digital signatures.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1774 .\" XXX (RFCs FIXME).
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1775 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	1776 the transmission.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1777 The TCP includes a checksum field therefore.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1778 These two approaches in combinations render the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1779 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1780 header field superfluous.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1781 Not a single one out of 4\\|200 messages from two decades
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1782 in an nmh-workers mailing list archive contains a
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1783 .Hd Content-MD5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1784 header field.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1785 Neither did any of the 60\\|000 messages in my personal mail storage.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1786 Removing the support for this header field,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1787 removed the last place where MD5 computation was needed.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1788 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1789 Hence, the MD5 code could be removed as well.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1790 Over 500 lines of code vanished by this one change.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1791
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1792
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1793 .U3 "MMDF maildrop support
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1794 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1795 This type of format is conceptionally similar to the mbox format,
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1796 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	1797 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	1798 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	1799 whereas the MMDF maildrop format is now forgotten.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1800 By dropping the MMDF maildrop format support,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1801 mbox became the only packed mailbox format supported in mmh.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1802 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1803 The simplifications within the code were moderate.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1804 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	1805 But also, switches of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1806 .Pn packf
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1807 and
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1808 .Pn rcvpack
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1809 could be removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1810 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1811 In the message parsing function
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1812 .Fn sbr/m_getfld.c ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1813 knowledge of MMDF packed mail boxes was removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1814 .Ci 684ec30d81e1223a282764452f4902ed4ad1c754
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1815 Further code structure simplifications may be possible there,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1816 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	1817 I have not worked on them yet because
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1818 .Fu m_getfld()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1819 is heavily optimized and thus dangerous to touch.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1820 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	1821 too high.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1822
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1823
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1824 .U3 "Prompter's Control Keys
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1825 .P
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1826 The program
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1827 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1828 queries the user to fill in a message form.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1829 When used by
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1830 .Pn comp
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1831 as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1832 .Cl "comp -editor prompter" ,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1833 the resulting behavior is similar to
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1834 .Pn mailx .
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	1835 Apparently,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1836 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1837 hadn't been touched lately.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1838 Otherwise it's hardly explainable why it
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1839 still offered the switches
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1840 .Sw -erase
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1841 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1842 and
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1843 .Sw -kill
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1844 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1845 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	1846 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	1847 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	1848 with the standard tool
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1849 .Pn stty .
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1850 The switches are removed now
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1851 .Ci 0bd9750710cdbab80cfb4036dd87af20afe1552f .
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1852
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1853
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1854 .U3 "Hardcopy Terminal Support
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1855 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1856 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	1857 hardcopy terminal.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1858 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	1859 .Ci b7764c4a6b71d37918a97594d866258f154017ca .
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1860 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1861 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	1862 program (\c
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1863 .Pn mhl )
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1864 and the terminal.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1865 In nmh, this could have been ensured statically with the
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1866 .Sw -nomoreproc
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1867 at the command line, too.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	1868 In mmh, setting the profile entry
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1869 .Pe Pager
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1870 or the environment variable
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1871 .Ev PAGER
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1872 to
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1873 .Pn cat
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1874 is sufficient.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1875
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1876
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1877
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1878
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1879 .H2 "Attachments
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	1880 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1881 The mind model of email attachments is unrelated to MIME.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1882 Although the MIME RFCs (2045 through 2049) define the technical
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1883 requirements for having attachments, they do not mention the word
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1884 ``attachment''.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1885 Instead of attachments, MIME talks about ``multi-part message bodies''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1886 [RFC\\|2045], a more general concept.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1887 Multi-part messages are messages
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1888 ``in which one or more different
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1889 sets of data are combined in a single body''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1890 [RFC\\|2046].
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1891 MIME keeps its descriptions generic;
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1892 it does not imply specific usage models.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1893 One usage model became prevalent: attachments.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1894 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	1895 attached to it.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1896 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	1897 and parts of arbitrary type following.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1898 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1899 MH's MIME support is a direct implementation of the RFCs.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1900 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	1901 in MH's implementation.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1902 .\" XXX rewrite ``no idea''.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1903 As a result,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1904 MH had all the MIME features but no idea of attachments.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1905 But users don't need all the MIME features,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1906 they want convenient attachment handling.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1907
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1908
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1909 .U3 "Composing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1910 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1911 In order to improve the situation on the message composing side,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1912 Jon Steinhart had added an attachment system to nmh in 2002.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1913 .Ci 7480dbc14bc90f2d872d434205c0784704213252
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1914 In the file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1915 .Fn docs/README-ATTACHMENTS ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1916 he described his motivation to do so as such:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1917 .QS
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1918 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	1919 handing [sic!], the interface to this functionality is pretty obtuse.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1920 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	1921 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1922 composition files!
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1923 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1924 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1925 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	1926 In the same document:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1927 .QS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1928 These changes simplify the task of managing attachments on draft files.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1929 They allow attachments to be added, listed, and deleted.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1930 MIME messages are automatically created when drafts with attachments
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1931 are sent.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1932 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1933 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1934 Unfortunately, the attachment system,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1935 like any new facilities in nmh,
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1936 was inactive by default.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1937 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1938 During my work in Argentina, I tried to improve the attachment system.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1939 But, because of great opposition in the nmh community,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1940 my patch died as a proposal on the mailing list, after long discussions.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1941 .[
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1942 nmh-workers attachment proposal
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1943 .]
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1944 In January 2012, I extended the patch and applied it to mmh.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1945 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1946 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	1947 Instead of command line switches, the
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1948 .Pe Attachment-Header
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1949 profile entry is used to specify
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1950 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	1951 It is pre-defined to
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1952 .Hd Attach .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1953 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1954 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	1955 .VS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1956 To: bob
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1957 Subject: The file you wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1958 Attach: /path/to/the/file-bob-wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1959 --------
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1960 Here it is.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1961 VE
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1962 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	1963 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	1964 non-interactively with
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1965 .Pn anno :
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1966 .VS
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1967 anno -append -nodate -component Attach -text /path/to/attachment
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1968 VE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1969 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	1970 .Pn send .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1971 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	1972 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	1973 attachment headers.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1974 If the MIMEification fails, for instance because the file to attach
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1975 is not accessible, the original draft is not changed.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1976 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1977 The attachment system handles the forwarding of messages, too.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1978 If the attachment header value starts with a plus character (`+'),
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1979 like in
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1980 .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	1981 the given messages in the specified folder will be attached.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1982 This allowed to simplify
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1983 .Pn forw .
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1984 .Ci f41f04cf4ceca7355232cf7413e59afafccc9550
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1985 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1986 Closely related to attachments is non-ASCII text content,
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1987 because it requires MIME too.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1988 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	1989 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	1990 This was necessary whenever the draft contained non-ASCII characters.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1991 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	1992 Therefore, the
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1993 .Pe automimeproc
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1994 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	1995 automatically each time.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1996 Unfortunately, this approach conflicted with attachment system
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1997 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	1998 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	1999 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	2000 WhatNow prompt and
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2001 .Pe automimeproc
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2002 must not be set in the profile.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2003 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	2004 not caught.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2005 All in all, the solution was complex and irritating.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2006 My patch from December 2010
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2007 .[
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2008 nmh-workers attachment proposal
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2009 .]
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2010 would have simplified the situation.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2011 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2012 Mmh's current solution is even more elaborate.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2013 Any necessary MIMEification is done automatically.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2014 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	2015 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	2016 attachment header or non-ASCII text is present.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2017 Furthermore, the hash character (`#') is not special any more
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2018 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	2019 .\" XXX REF ?
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2020 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	2021 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2022 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	2023 compositions directly, the full power of
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2024 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2025 can still be accessed.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2026 Given no attachment headers are included, the user can create
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2027 .Pn mhbuild
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2028 composition drafts like in nmh.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2029 Then, at the WhatNow prompt, he needs to invoke
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2030 .Cl "edit mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2031 to convert it to MIME.
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2032 Because the resulting draft does neither contain non-ASCII characters
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2033 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	2034 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2035 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	2036 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	2037 This case was simplified.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2038
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2039
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2040 .U3 "MIME Type Guessing
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2041 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2042 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	2043 .Pn mhbuild
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2044 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	2045 The user provides the appropriate MIME types for files to include.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2046 The attachment system needs to find out the correct MIME type itself.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2047 This is a difficult task, yet it spares the user irritating work.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2048 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	2049 partly intelligent work.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2050 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	2051 forces him to do partly mechanical work.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2052 Letting the computer do the work, can lead to bad choices for difficult
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2053 content.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2054 For mmh, the latter option was chosen.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2055 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2056 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	2057 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	2058 for the common cases.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2059 Mmh implements this approach in the
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2060 .Pn print-mimetype
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2061 script.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2062 .Ci 4b5944268ea0da7bb30598a27857304758ea9b44
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2063 Using it is the default choice.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2064 .P
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2065 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	2066 .Pn file .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2067 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	2068 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	2069 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	2070 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	2071 It varies much.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2072 Nevertheless, modern versions of GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2073 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2074 which is 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	2075 provide MIME type output in machine-readable form.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2076 Although this solution is highly system-dependent,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2077 it solves the difficult problem well.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2078 On systems where GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2079 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2080 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	2081 One needs to specify the following profile entry to do so:
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2082 .Ci 3baec236a39c5c89a9bda8dbd988d643a21decc6
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2083 .VS
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2084 Mime-Type-Query: file -b --mime
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2085 VE
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2086 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2087 Other versions of
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2088 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2089 might possibly be usable with wrapper scripts to reformat the output.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2090 The diversity among
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2091 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2092 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	2093 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2094 If no MIME type can be determined, text content gets sent as
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2095 `text/plain' and anything else under the generic fall-back type
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2096 `application/octet-stream'.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2097 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	2098 for a specific file.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2099 To do so, either the user would need to know in advance for which file
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2100 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	2101 I consider both cases impractical.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2102 The existing solution should be sufficient.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2103 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	2104 .Pn mhbuild
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2105 composition drafts and ignore the attachment system.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2106
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2107
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2108 .U3 "Storing Attachments
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2109 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2110 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	2111 .Pn mhstore .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2112 The program has two operation modes,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2113 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2114 and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2115 .Sw -noauto .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2116 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	2117 MIME part's meta information, if available.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2118 This naming information is usually available for modern attachments.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2119 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	2120 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2121 would have been specified.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2122 In the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2123 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2124 mode, the parts are processed according to rules, defined by
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2125 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2126 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2127 These rules define generic filename templates for storing
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2128 or commands to post-process the contents in arbitrary ways.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2129 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	2130 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	2131 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2132 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2133 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2134 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	2135 in contrast to the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2136 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2137 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2138 In mmh,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2139 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2140 is not dangerous anymore.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2141 Two changes were necessary:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2142 .LI 1
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2143 Any directory path is removed from the proposed filename.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2144 Thus, the files are always stored in the expected directory.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2145 .Ci 41b6eadbcecf63c9a66aa5e582011987494abefb
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2146 .LI 2
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2147 Tar files are not extracted automatically any more.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2148 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	2149 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2150 .LP
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2151 Now, the outcome of mmh's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2152 .Cl "mhstore -auto
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2153 can be foreseen from the output of
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2154 .Cl "mhlist -verbose" .
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 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2157 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2158 mode is seen to be more powerful but less convenient.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2159 On the other hand,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2160 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2161 is safe now and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2162 storing attachments under their original name is intuitive.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2163 Hence,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2164 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2165 serves better as the default option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2166 .Ci 3410b680416c49a7617491af38bc1929855a331d
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2167 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2168 Files are stored into the directory given by the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2169 .Pe Nmh-Storage
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2170 profile entry, if set, or
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2171 into the current working directory, otherwise.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2172 Storing to different directories is only possible with
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2173 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2174 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2175 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2176 Still, in both modes, existing files get overwritten silently.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2177 This can be considered a bug.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2178 Yet, each other behavior has its draw-backs, too.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2179 Refusing to replace files requires adding a
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2180 .Sw -force
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2181 option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2182 Users will likely need to invoke
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2183 .Pn mhstore
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2184 a second time with
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2185 .Sw -force .
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2186 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	2187 This requires interaction, which I like to avoid if possible.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2188 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	2189 For now, the behavior remains as it is.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2190 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2191 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	2192 .Pn mhstore 's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2193 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2194 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2195 Instead of storing message/rfc822 parts as files to disk,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2196 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	2197 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	2198 automatically reassembled beforehand.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2199 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	2200 anymore.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2201 Instead, information on how to retrieve them is output.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2202 Not supporting this rare case saved nearly one thousand lines of code.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2203 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2204 .\" XXX mention somewhere else too: (The profile entry `nmh-access-ftp'
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2205 .\" and sbr/ruserpass.c for reading ~/.netrc are gone now.)
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2206 `application/octet-stream; type=tar' is not special anymore.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2207 Automatically extracting such MIME parts had been the dangerous part
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2208 of the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2209 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2210 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2211 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2212
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2213
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2214
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2215 .U3 "Showing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2216 .P
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2217 The program
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2218 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2219 had been written to display MIME messages.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2220 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	2221 Nmh's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2222 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2223 handled each MIME part independently, presenting them separately
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2224 to the user.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2225 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	2226 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	2227 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	2228 plus possibly attachments.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2229 They are not any more seen to be arbitrary MIME hierarchies with
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2230 information on how to display the individual parts.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2231 I adjusted
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2232 .Pn mhshow 's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2233 behavior to the modern view on the topic.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2234 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2235 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	2236 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2237 program, because it was not capable to display MIME messages
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2238 and is no longer part of mmh.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2239 Although
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 was renamed to
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2242 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2243 in mmh, this section uses the name
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2244 .Pn mhshow ,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2245 in order to avoid confusion.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2246 .\" XXX ref to other section
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2247 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2248 In mmh, the basic idea is that
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2249 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2250 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	2251 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2252 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2253 invokes a pager session for all its output,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2254 whenever it prints to a terminal.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2255 .Ci a4197ea6ffc5c1550e8b52d5a654bcaaaee04a4e
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2256 In consequence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2257 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2258 does no more invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2259 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2260 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2261 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2262 replacing the original
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2263 .Pn show ,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2264 output from
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2265 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2266 does not go to the terminal directly, but through
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2267 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2268 Hence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2269 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2270 does not need to invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2271 The one and only job of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2272 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2273 is to format messages or parts of them.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2274 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	2275 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2276 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2277 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2278 profile entries can be used to display MIME parts in a specific way.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2279 For instance, PDF and Postscript files could be converted to plain text
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2280 to display them in the terminal.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2281 In mmh, MIME parts will always be displayed serially.
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2282 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	2283 is ignored.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2284 It is simply treated as `multipart/mixed'.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2285 .Ci d0581ba306a7299113a346f9b4c46ce97bc4cef6
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2286 This could already be requested with the, now removed,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2287 .Sw -serialonly
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2288 switch of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2289 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2290 As MIME parts are always processed exclusively , i.e. serially,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2291 the `%e' escape in
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2292 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2293 profile entries became useless and was thus removed.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2294 .Ci a20d405db09b7ccca74d3e8c57550883da49e1ae
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2295 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2296 In the intended setup, only text content would be displayed.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2297 Non-text content would be converted to text by appropriate
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2298 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2299 profile entries before, if possible and wanted.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2300 All output would be displayed in a single pager session.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2301 Other kinds of attachments are ignored.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2302 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2303 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2304 profile entries for them, they can be displayed serially along
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2305 the message.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2306 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	2307 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2308 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	2309 to the native charset.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2310 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2311 .Pe mhshow-charset-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2312 profile entries used to be needed.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2313 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	2314 text through the
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2315 .Pn iconv
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2316 command, if necessary.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2317 .Ci 2433122c20baccb10b70b49c04c6b0497b5b3b60
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2318 Custom
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2319 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2320 rules for textual content might need a
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2321 .Cl "iconv -f %c %f \|
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2322 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	2323 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2324 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	2325 has improved, it is not consistent enough.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2326 Further work needs to be done and
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2327 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	2328 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	2329 correctly without the need to configure anything.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2330
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2331
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2332 .ig
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2333
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2334 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2335 mhshow/mhstore: Removed support for retrieving message/external-body parts.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2336 These tools won't download the contents automatically anymore. Instead,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2337 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	2338 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	2339 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	2340 it!
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2341 (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	2342 ~/.netrc are gone now.)
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2343 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2344
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2345 ..
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2346
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2347
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2348
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2349 .H2 "Signing and Encrypting
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	2350 .P
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2351 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	2352 This functionality needed to be added through third-party software.
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2353 In mmh, the functionality should be included because it
f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2354 is a part of modern email and likely wanted by users of mmh.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2355 A fresh mmh installation should support signing and encrypting
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2356 out-of-the-box.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2357 Therefore, Neil Rickert's
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2358 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2359 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2360 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2361 scripts
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2362 .[
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2363 neil rickert mhsign mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2364 .]
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2365 were included into mmh.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2366 The scripts fit well into the mmh, because they are lightweight and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2367 of style similar to the existing tools.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2368 Additionally, no licensing difficulties appeared,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2369 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	2370 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2371 The scripts were written for nmh, hence I needed to adjust them according
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2372 to the differences of mmh.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2373 For instance, I removed the use of the backup prefix and dropped support
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2374 for old PGP features.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2375 .P
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2376 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2377 handles the signing and encrypting part.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2378 It comprises about 250 lines of shell code and interfaces between
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2379 .Pn gnupg
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2380 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2381 the MH system.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2382 It was meant to be invoked at the WhatNow prompt, but in mmh,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2383 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2384 does the job automatically.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2385 Special header fields were introduced to request the action.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2386 If a draft contains the
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2387 .Hd Sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2388 header field,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2389 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2390 will sign it.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2391 The key to be used is either chosen automatically or specified by the
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2392 .Pe Pgpkey
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2393 profile entry.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2394 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2395 always signes messages using the PGP/MIME standard, \" REF XXX
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2396 but by manually invoking
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2397 .Pn mhsign ,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2398 old-style non-MIME signatures can be created as well.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2399 To sign an outgoing message, the draft needs to contain a
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2400 .Hd Enc
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2401 header field.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2402 Public keys of all recipients are taken from the gnupg keyring or
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2403 from an overrides files, called
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2404 .Fn pgpkeys .
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2405 Unless public keys are found for all recipients,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2406 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2407 will refuse to encrypt and send it.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2408 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	2409 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	2410 approach.
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2411 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2412 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	2413 most recent features in mmh.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2414 Feedback from users and the experience I will gather myself
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2415 will direct the further development of the facility.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2416 It is worthwhile to consider adding
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2417 .Sw -[no]sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2418 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2419 .Sw -[no]enc
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2420 switches to
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2421 .Pn send ,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2422 to override the corresponding header fields.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2423 The profile entry:
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2424 .VS
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2425 send: -sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2426 VE
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2427 .LP
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2428 would then activate signing of all outgoing messages.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2429 With the present approach, the line
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2430 .VS
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2431 Send:
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2432 VE
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2433 .LP
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2434 needs to be added to all message forms to achieve the same result.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2435 Yet, the integration of
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2436 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2437 into mmh is too recent to have enough experience to decide this
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2438 question now.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2439 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2440 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2441 is the contrary part to
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2442 .Pn mhsign .
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2443 It verifies signatures and decrypts messages.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2444 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2445 FIXME: Add it to mmh first, then write about it here.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2446 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2447 The integration of
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2448 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2449 into
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2450 .Pn show ,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2451 to automatically verify signatures and decrypt messages as needed,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2452 is a task left open.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2453 .Pn show 's
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2454 current structure does not allow such an integration on basis of
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2455 the existing code.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2456 Extensive programming work is required. ... FIXME
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2457
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2458
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2459
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2460
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2461
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2462 .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	2463 .P
14 55ec590cfa07 Wrote about the draft folder. markus schnalke <meillo@marmaro.de> parents: 12 diff changeset	2464
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2465 .U3 "Draft Folder
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2466 .Id draft-folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2467 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2468 In the beginning, MH had the concept of a draft message.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2469 This is the file
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2470 .Fn draft
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2471 in the MH directory, which is treated special.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2472 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	2473 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	2474 the user had to decide among:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2475 .LI 1
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2476 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	2477 .LI 2
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2478 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	2479 .LI 3
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2480 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	2481 .LP
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2482 It was only possible to work in alternation on multiple drafts.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2483 Therefore, 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	2484 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	2485 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	2486 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	2487 help anything.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2488 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2489 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	2490 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	2491 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	2492 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	2493 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	2494 out-of-the-box.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2495 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	2496 .Mp mh-draft (5)
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2497 to better document the feature.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2498 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2499 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	2500 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	2501 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	2502 complex cases.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2503 The concept of the draft message is too limited for the problem.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2504 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	2505 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	2506 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	2507 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	2508 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	2509 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	2510 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	2511 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2512 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	2513 default name.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2514 I chose the name
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2515 .Fn +drafts
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2516 for obvious reasons.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2517 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	2518 .Sw -draftfolder
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2519 and
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2520 .Sw -draftmessage
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2521 could be removed.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2522 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	2523 new concept.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2524 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	2525 approaches.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2526 By fully switching to the draft folder, the tools could be simplified
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2527 by dropping the awkward draft message handling code.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2528 .Sw -draft
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2529 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	2530 special.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2531 It became indistinguishable to operating on any other message.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2532 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2533 .P
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2534 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	2535 .Ci 2d48b455c303a807041c35e4248955f8bec59eeb .
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2536 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	2537 Refiling drafts is without difference to refiling other messages.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2538 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	2539 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	2540 .Pn comp
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2541 still has
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2542 .Sw -[no]use
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2543 for switching between two modes:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2544 .LI 1
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2545 .Sw -use
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2546 to modify an existing draft.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2547 .LI 2
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2548 .Sw -nouse
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2549 to compose a new draft, possibly taking some existing message as template.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2550 .LP
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2551 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	2552 .Pn comp
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2553 is deterministic.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2554 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2555 .Pn send
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2556 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	2557 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	2558 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	2559 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	2560 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	2561 .Pn send
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2562 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	2563 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2564 Dropping the draft message concept in favor for the draft folder concept,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2565 removed special cases with regular cases.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2566 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	2567 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	2568 but applies them.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2569 .Cl "scan +drafts" ,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2570 for instance, is a truly natural request.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2571 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	2572 The original improvement of mmh is dropping the old draft message approach
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2573 and thus simplifying the tools, the documentation 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	2574 Although my part in the draft handling improvement was small,
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2575 it was an important one.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2576
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2577
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2578 .U3 "Trash Folder
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2579 .Id trash-folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2580 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2581 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	2582 Historically, a message was ``deleted'' by prepending a specific
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2583 \fIbackup prefix\fP, usually the comma character, to the file name.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2584 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	2585 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	2586 Although files remained in the file system,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2587 the messages were no longer visible in MH.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2588 To truly delete them, a maintenance job was needed.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2589 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	2590 For instance:
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2591 .VS
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2592 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	2593 VE
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2594 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	2595 within the grace time interval by stripping the
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2596 backup prefix from the file name.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2597 But the user could not rely on this statement.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2598 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	2599 message
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2600 .Fn 6 ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2601 became file
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2602 .Fn ,6 .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2603 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	2604 the number one above the highest existing message number.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2605 In this case the message would be named
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2606 .Fn 6
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2607 then.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2608 If this new message would be removed as well,
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2609 then the backup of the former message is overwritten.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2610 Hence, the ability to restore removed messages did not only depend on
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2611 the ``sweeping cron job'' but also on the removing of further messages.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2612 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	2613 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	2614 ``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	2615 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	2616 same folder is removed before.'' the statement becomes complex.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2617 A user will hardly be able to keep track of any removal to know
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2618 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	2619 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	2620 The consequences of further removals are not obvious.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2621 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2622 Further more, the backup files are scattered within the whole mail storage.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2623 This complicates managing them.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2624 It is 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	2625 .Pn find ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2626 but everything would be more convenient
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2627 if the deleted messages would be collected in one place.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2628 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2629 The profile entry
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2630 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2631 (previously named
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2632 .Pe Delete-Prog )
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2633 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	2634 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	2635 the specified messages.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2636 This would override the default action described above.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2637 Refiling the to-be-removed files to a trash folder is the usual example.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2638 Nmh's man page
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2639 .Mp rmm (1)
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2640 proposes to set the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2641 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2642 to
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2643 .Cl "refile +d
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2644 to move messages to the trash folder,
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2645 .Fn +d ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2646 instead of renaming them with the backup prefix.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2647 The man page proposes additionally the expunge command
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2648 .Cl "rm `mhpath +d all`
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2649 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	2650 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2651 Removing messages in such a way has advantages.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2652 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	2653 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	2654 Existing and removed messages are thus separated more strictly.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2655 No backup files are silently overwritten.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2656 But most important is the ability to keep removed messages in the MH domain.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2657 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	2658 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	2659 .Pn refile
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2660 can restore deleted messages.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2661 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	2662 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	2663 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2664 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	2665 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	2666 Hence,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2667 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2668 calls
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2669 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2670 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	2671 .Fn +trash
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2672 by default.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2673 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	2674 .Cl "rmm -unlink +trash a" ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2675 where the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2676 .Sw -unlink
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2677 switch causes the files to be unlinked.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2678 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2679 .Ci ca0b3e830b86700d9e5e31b1784de2bdcaf58fc5
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2680 .P
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2681 Dropping the legacy approach and converting to the new approach completely
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2682 simplified the code base.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2683 The relationship between
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2684 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2685 and
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2686 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2687 was inverted.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2688 In mmh,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2689 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2690 invokes
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2691 .Pn refile ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2692 which used to be the other way round.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2693 Yet, the relationship is simpler now.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2694 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	2695 .Mp refile (1),
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2696 can no longer occur:
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2697 .QS
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2698 Since
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2699 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2700 uses your
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2701 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2702 to delete the message, the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2703 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2704 must NOT call
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2705 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2706 without specifying
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2707 .Sw -normmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2708 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	2709 .QE
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2710 .LP
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2711 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2712 either unlinks a message with
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2713 .Fu unlink()
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2714 or invokes
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2715 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2716 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	2717 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2718 does not invoke any tools.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2719 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2720 By generalizing the message removal in the way that it became covered
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2721 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	2722
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2723
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2724
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2725
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2726
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2727 .H2 "Modern Defaults
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2728 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2729 Nmh has a bunch of convenience-improving features inactive by default,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2730 although one can expect every new user wanting to have them active.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2731 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	2732 with old versions.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2733 But what is the definition for old versions?
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2734 Still, the highly useful draft folder facility has not been activated
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2735 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	2736 .[
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2737 rose romine real work
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2738 .]
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2739 The community seems not to care.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2740 This is one of several examples that require new users to first build up
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2741 a profile before they can access the modern features of nmh.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2742 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	2743 for modern emailing.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2744 The point is not the customization of the setup,
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2745 but the need to activate generally useful facilities.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2746 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2747 Yet, the real problem lies less in enabling the features, as this is
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2748 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	2749 The real problem is that new users need deep insight into the project
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2750 to find out about inactive features nmh already provides.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2751 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	2752 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	2753 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	2754 documentation.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2755 If I would have installed nmh from source back then, I could agree.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2756 Yet, I had used a prepackaged version and had expected that it would
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2757 just work.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2758 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	2759 and I am a software developer,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2760 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	2761 How can we expect users to be even more advanced than me,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2762 just to allow them use MH in a convenient and modern way?
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2763 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	2764 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	2765 before they truly used the system,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2766 although they had been motivated in the beginning.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2767 They suffer hard enough to get used to the toolchest approach,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2768 we should spare them further inconveniences.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2769 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2770 Maintaining compatibility for its own sake is bad,
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2771 because the code base collects more and more compatibility code.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2772 Sticking to the compatiblity code means remaining limited;
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2773 whereas adjusting to the changes renders the compatibility unnecessary.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2774 Keeping unused alternatives in the code is a bad choice as they likely
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2775 gather bugs, by not being well tested.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2776 Also, the increased code size and the greater number of conditions
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2777 increase the maintenance costs.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2778 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	2779 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	2780 important.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2781 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	2782 Hence, compatibility is hardly important for technical reasons.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2783 Its importance originates rather from personal reasons.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2784 Nmh's user base is small and old.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2785 Changing the interfaces would cause inconvenience to long-term users of MH.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2786 It would force them to change their many years old MH configurations.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2787 I do understand this aspect, but by sticking to the old users,
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2788 new users are kept away.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2789 Yet, the future lies in new users.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2790 In consequence, mmh invites new users by providing a convenient
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2791 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	2792 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2793 In mmh, all modern features are active by default and many previous
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2794 approaches are removed or only accessible in manual ways.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2795 New default features include:
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2796 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2797 The attachment system (\c
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2798 .Hd Attach ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2799 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2800 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2801 The draft folder facility (\c
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2802 .Fn +drafts ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2803 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2804 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2805 The unseen sequence (`u')
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2806 .Ci c2360569e1d8d3678e294eb7c1354cb8bf7501c1
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2807 and the sequence negation prefix (`!').
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2808 .Ci db74c2bd004b2dc9bf8086a6d8bf773ac051f3cc
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2809 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2810 Quoting the original message in the reply.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2811 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2812 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2813 Forwarding messages using MIME.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2814 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	2815 .LP
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2816 In consequence, a setup with a profile that defines only the path to the
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2817 mail storage, is already convenient to use.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2818 Again, Paul Vixie's ``edginess'' call supports the direction I took:
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2819 ``the `main branch' should just be modern''.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2820 .[
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2821 paul vixie edginess nmh-workers
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2822 .]
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2823
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2824
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2825
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2826
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2827
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2828 .\" --------------------------------------------------------------
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2829 .H1 "Styling
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	2830 .P
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2831 Kernighan and Pike have emphasized the importance of style in the
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2832 preface of their book:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2833 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2834 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	2835 .], p. x]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2836 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2837 Chapter 1 discusses programming style.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2838 Good style is so important to good programming that we have chose
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2839 to cover it first.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2840 .QE
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2841 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	2842 to improve on style.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2843 Many of them follow the rules given in the quoted book.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2844 .[
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2845 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	2846 .]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2847
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2848
127 4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2849
4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2850
4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2851 .H2 "Code Style
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2852 .Id code-style
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2853 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2854 .U3 "Indentation Style
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2855 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2856 Indentation styles are the holy cow of programmers.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2857 Kernighan and Pike
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2858 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2859 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	2860 .], p. 10]
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2861 wrote:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2862 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2863 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	2864 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	2865 application.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2866 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	2867 time arguing.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2868 .QE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2869 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2870 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	2871 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	2872 For instance the indentation with tab characters only.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2873 Tab characters directly map to the nesting level \(en
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2874 one tab, one level.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2875 Tab characters are flexible because developers can adjust them to
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2876 whatever width they like to have.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2877 There is no more need to run
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2878 .Pn unexpand
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2879 or
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2880 .Pn entab
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2881 programs to ensure the correct mixture of leading tabs and spaces.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2882 The simple rules are: (1) Leading whitespace must consist of tabs only.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2883 (2) Any other whitespace should consist of spaces.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2884 These two rules ensure the integrity of the visual appearance.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2885 Although reformatting existing code should be avoided, I did it.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2886 I did not waste time arguing; I just reformated the code.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2887 .Ci a485ed478abbd599d8c9aab48934e7a26733ecb1
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2888
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2889 .U3 "Comments
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2890 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2891 Section 1.6 of
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2892 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2893 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	2894 .], p. 23]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2895 demands: ``Don't belabor the obvious.''
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2896 Hence, I simply removed all the comments in the following code excerpt:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2897 .VS
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2898 context_replace(curfolder, folder); /* update current folder */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2899 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	2900 seq_save(mp); /* synchronize message sequences */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2901 folder_free(mp); /* free folder/message structure */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2902 context_save(); /* save the context file */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2903
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2904 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2905
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2906 int c; /* current character */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2907 char cp; / miscellaneous character pointer */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2908
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2909 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2910
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2911 /* NUL-terminate the field */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2912 *cp = '\0';
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2913 VE
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2914 .Ci 426543622b377fc5d091455cba685e114b6df674
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2915 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2916 The program code explains enough itself, already.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2917
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2918
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2919 .U3 "Names
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2920 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2921 Kernighan and Pike suggest:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2922 ``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	2923 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2924 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	2925 .], p. 4]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2926 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	2927 .Fu check_charset()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2928 to
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2929 .Fu is_native_charset() .
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2930 .Ci 8d77b48284c58c135a6b2787e721597346ab056d
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2931 The same change fixed a violation of ``Be accurate'' as well.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2932 The code did not match the expectation the function suggested,
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2933 as it, for whatever reason, only compared the first ten characters
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2934 of the charset name.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2935 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2936 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	2937 .VS
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2938 m_unknown(in); /* the MAGIC invocation... */
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2939 VE
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2940 Renaming the obscure
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2941 .Fu m_unknown()
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2942 function was a delightful event, although it made the code less funny.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2943 .Ci 611d68d19204d7cbf5bd585391249cb5bafca846
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2944 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2945 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	2946 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	2947 ``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	2948 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2949 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	2950 .], p. 19]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2951 One such change was naming the type of input \(en mbox or mail folder \(en
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2952 to be scanned:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2953 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2954 #define SCN_MBOX (-1)
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2955 #define SCN_FOLD 0
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2956 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2957 .Ci 7ffb36d28e517a6f3a10272056fc127592ab1c19
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2958 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2959 The argument
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2960 .Ar outnum
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2961 of the function
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2962 .Fu scan()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2963 in
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2964 .Fn uip/scansbr.c
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2965 defines the number of the message to be created.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2966 If no message is to be created, the argument is misused to transport
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2967 program logic.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2968 This lead to obscure code.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2969 I improved the clarity of the code by introducing two variables:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2970 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2971 int incing = (outnum > 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2972 int ismbox = (outnum != 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2973 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2974 They cover the magic values and are used for conditions.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2975 The variable
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2976 .Ar outnum
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2977 is only used when it holds an ordinary message number.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2978 .Ci b8b075c77be7794f3ae9ff0e8cedb12b48fd139f
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2979 The clarity improvement of the change showed detours in the program logic
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2980 of related code parts.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2981 Having the new variables with descriptive names, a more
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2982 straight forward implementation became apparent.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2983 Before the code was clarified, the possibility to improve had not be seen.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2984 .Ci aa60b0ab5e804f8befa890c0a6df0e3143ce0723
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2985
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2986
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2987
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2988 .H2 "Structural Rework
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2989 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2990 Although the stylistic changes described up to here improve the
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2991 readability of the source code, all of them are changes ``in the small''.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2992 Structural changes affect a much larger area.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2993 They are more difficult to do but lead to larger improvements,
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2994 especially as they 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	2995 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2996 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	2997 Kernighan and Pike ask: ``But why worry about style?''
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2998 Following are two examples of structural rework that show
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2999 why style is important in the first place.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3000
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3001
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3002 .U3 "Rework of \f(CWanno\fP
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3003 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3004 Until 2002,
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3005 .Pn anno
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3006 had six functional command line switches,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3007 .Sw -component
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3008 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3009 .Sw -text ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3010 which have an argument each,
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3011 and the two pairs of flags,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3012 .Sw -[no]date
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3013 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3014 .Sw -[no]inplace .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3015 Then Jon Steinhart introduced his attachment system.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3016 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	3017 .Pn anno .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3018 He added five more switches:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3019 .Sw -draft ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3020 .Sw -list ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3021 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3022 .Sw -append ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3023 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3024 .Sw -number ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3025 the last one taking an argument.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3026 .Ci 7480dbc14bc90f2d872d434205c0784704213252
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3027 Later,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3028 .Sw -[no]preserve
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3029 was added.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3030 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3031 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	3032 .Mp anno (1)
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3033 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3034 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3035 anno [+folder] [msgs] [-component field] [-inplace \| -noinplace]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3036 [-date \| -nodate] [-draft] [-append] [-list] [-delete]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3037 [-number [num\|all]] [-preserve \| -nopreserve] [-version]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3038 [-help] [-text body]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3039 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3040 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3041 The implementation followed the same structure.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3042 Problems became visible when
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3043 .Cl "anno -list -number 42
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3044 worked on the current message instead on message number 42,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3045 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3046 .Cl "anno -list -number l:5
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3047 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	3048 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	3049 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	3050 There, the correct use of
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3051 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3052 was defined as being
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3053 .Cl "[-number [num\|all]]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3054 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	3055 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3056 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3057 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3058 The
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3059 .Sw -list
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3060 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	3061 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	3062 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	3063 .Sw -number
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3064 option is also used.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3065 .QE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3066 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3067 The problem was manifold.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3068 The code required a numeric argument to the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3069 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3070 switch.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3071 If it was missing or non-numeric,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3072 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3073 aborted with an error message that had an off-by-one error,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3074 printing the switch one before the failing one.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3075 Semantically, the argument to the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3076 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3077 switch is only necessary in combination with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3078 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3079 but not with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3080 .Sw -list .
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3081 .P
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3082 Trying to fix these problems on the surface would not have solved
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3083 them truly, as they originate from a discrepance between the semantic
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3084 structure of the problem and the structure implemented in the program.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3085 Such structural differences can not be cured on the surface.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3086 They need to be solved by adjusting the structure of the implementation
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3087 to the structure of the problem.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3088 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3089 In 2002, the new switches
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3090 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3091 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3092 .Sw -delete
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3093 were added in the same way, the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3094 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3095 switch for instance had been added.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3096 Yet, they are of structural different type.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3097 Semantically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3098 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3099 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3100 .Sw -delete
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3101 introduce modes of operation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3102 Historically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3103 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3104 had only one operation mode: adding header fields.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3105 With the extension, it got two more modes:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3106 listing and deleting header fields.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3107 The structure of the code changes did not pay respect to this
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3108 fundamental change to
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3109 .Pn anno 's
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3110 behavior.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3111 Neither the implementation nor the documentation did clearly
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3112 define them as being exclusive modes of operation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3113 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	3114 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3115 and its documentation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3116 .Ci d54c8db8bdf01e8381890f7729bc0ef4a055ea11
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3117 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3118 The difference is visible in both, the code and the documentation.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3119 The following code excerpt:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3120 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3121 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	3122 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	3123 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3124 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3125 delete = 0;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3126 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3127 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3128 list = 1;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3129 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3130 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3131 .LP
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3132 was replaced by:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3133 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3134 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	3135 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3136 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3137 mode = MODE_DEL;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3138 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3139 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3140 mode = MODE_LIST;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3141 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3142 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3143 .LP
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3144 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	3145 it is easier to understand as well.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3146 The same applies to the documentation.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3147 The man page was completely reorganized to propagate the same structure.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3148 This is visible in the Synopsis section:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3149 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3150 anno [+folder] [msgs] [-component field] [-text body]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3151 [-append] [-date \| -nodate] [-preserve \| -nopreserve]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3152 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3153
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3154 anno -delete [+folder] [msgs] [-component field] [-text
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3155 body] [-number num \| all ] [-preserve \| -nopreserve]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3156 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3157
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3158 anno -list [+folder] [msgs] [-component field] [-number]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3159 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3160 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3161 .\" XXX think about explaining the -preserve rework?
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3162
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	3163
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	3164
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3165 .U3 "Path Conversion
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3166 .P
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3167 Four kinds of path names can appear in MH:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3168 .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	3169 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	3170 .Fn /etc/passwd .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3171 .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	3172 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	3173 .Fn ./foo/bar .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3174 .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	3175 Absolute 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	3176 .Fn +friends/phil .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3177 .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	3178 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	3179 .Fn @subfolder .
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3180 .LP
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3181 The last type, relative MH folder paths, are hardly documented.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3182 Nonetheless, they are useful for large mail storages.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3183 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	3184 .Fn @ ',
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3185 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	3186 .Fn . '.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3187 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3188 To allow MH tools to understand all four notations,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3189 they need to convert between them.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3190 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	3191 .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	3192 (``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	3193 .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	3194 (``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	3195 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	3196 than two comments, which described obvious information.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3197 The function signatures were neither explaining:
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3198 .VS
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3199 char path(char , int);
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3200 char pluspath(char );
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3201 char m_mailpath(char );
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3202 char m_maildir(char );
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3203 VE
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3204 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3205 My investigation provides the following description:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3206 .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	3207 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	3208 .Fu path()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3209 defines the type of path given as first parameter.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3210 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	3211 Folder paths are converted to absolute folder paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3212 Folder paths must not include a leading `@' character.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3213 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	3214 The result is a pointer to newly allocated memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3215 .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	3216 .Fu pluspath()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3217 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	3218 .Fu path() ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3219 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	3220 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	3221 An empty string parameter causes a buffer overflow.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3222 .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	3223 .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	3224 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	3225 The characters `+' or `@' at the beginning of the path name are
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3226 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	3227 Hence, this function can not be used for folder paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3228 In any case, the result is 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	3229 The result is a pointer to newly allocated memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3230 .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	3231 .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	3232 returns the parameter unchanged if it is 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	3233 or begins with the entry `.' or `..'.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3234 All other strings are prepended with the current working directory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3235 Hence, this functions can not be used for folder paths.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3236 The result is either an absolute directory path or a relative
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3237 directory path, starting with a dot.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3238 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	3239 static memory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3240 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3241 The situation was obscure, irritating, error-prone, and non-orthogonal.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3242 No clear terminology was used to name the different kinds of path names.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3243 The first argument of
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3244 .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	3245 for instance, was named
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3246 .Ar folder ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3247 though
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3248 .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	3249 can not be used for MH folders.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3250 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3251 I reworked the path name conversion completely, introducing clarity.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3252 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	3253 A path name is either in the Unix domain, then it is called
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3254 \fIdirectory path\fP, `dirpath' for short, or it is in the MH domain,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3255 then it is called \fIfolder path\fP, `folpath' for short.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3256 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	3257 Having a clear terminology is often an indicator of having understood
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3258 the problem itself.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3259 Second, I exploited the concept of path type indicators.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3260 By requesting every path name to start with a clear type identifier,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3261 conversion between the types can be fully automated.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3262 Thus the tools can accept paths of any type from the user.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3263 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	3264 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	3265 In consequence, the dot character could no longer be an alias for the
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3266 current message.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3267 .Ci cff0e16925e7edbd25b8b9d6d4fbdf03e0e60c01
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3268 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	3269 .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	3270 .Fu expandfol()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3271 converts folder paths to absolute folder paths,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3272 without the leading plus character.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3273 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	3274 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	3275 The result is a pointer to static memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3276 .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	3277 .Fu expanddir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3278 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	3279 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	3280 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	3281 The result is a pointer to static memory.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3282 .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	3283 .Fu toabsdir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3284 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	3285 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	3286 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	3287 path name.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3288 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	3289 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3290 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	3291 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	3292 same type.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3293 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	3294 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	3295 All of the functions return pointers 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	3296 All three functions are implemented in
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3297 .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	3298 .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	3299 is removed.
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 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	3303 .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	3304 with
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3305 .Fu getdeffol()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3306 and
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3307 .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	3308 with
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3309 .Fu getcurfol() ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3310 which is only a convenience wrapper for
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3311 .Fu expandfol("@") .
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3312 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	3313 .Fn sbr/getfolder.c
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3314 to
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3315 .Fn sbr/path.c .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3316 .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	3317 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3318 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	3319 .Fu etcpath()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3320 was moved to
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3321 .Fn sbr/path.c ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3322 too
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3323 .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	3324 Previously, it had been located in
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3325 .Fn config/config.c ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3326 for whatever reasons.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3327 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3328 .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	3329 now contains all path handling code.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3330 Only 173 lines of code were needed to replace the previous 252 lines.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3331 The readability of the code is highly improved.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3332 Additionally, each of the six exported and one static functions
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3333 is introduced by an explaining comment.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3334
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3335
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3336
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3337
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3338 .H2 "Profile Reading
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3339 .P
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3340 The MH profile contains the configuration for the user-specific MH setup.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3341 MH tools read the profile right after starting up,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3342 as it contains the location of the user's mail storage
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3343 and similar settings that influence the whole setup.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3344 Further more, the profile contains the default switches for the tools,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3345 hence, it must be read before the command line switches are processed.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3346 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3347 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	3348 Among them were
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3349 .Pn post /\c
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3350 .Pn spost ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3351 .Pn mhmail ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3352 and
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3353 .Pn slocal .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3354 The reason why these tools ignored the profile were not clearly stated.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3355 During the discussion on the nmh-workers mailing list,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3356 .[
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3357 nmh-workers levine post profile
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3358 .]
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3359 David Levine posted an explanation, quoting John Romine:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3360 .QS
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3361 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	3362 agrees and provides an example that convinces me:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3363 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3364 My take on this is that
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3365 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3366 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	3367 .Fn .mh_profile
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3368 (only front-end UI programs read the profile).
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3369 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3370 For example, there can be contexts where
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3371 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3372 is called by a helper program (like `\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3373 .Pn mhmail ')
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3374 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	3375 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	3376 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3377 My suggestion would be to have
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3378 .Pn send
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3379 pass a (hidden) `\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3380 .Sw -fileproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3381 .Ar proc '
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3382 option to
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3383 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3384 if needed.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3385 You could also
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3386 use an environment variable (I think
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3387 .Pn send /\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3388 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3389 do this).
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3390 .QE
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3391 I think that's the way to go.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3392 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	3393 not an environment variable.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3394 .QE
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3395 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3396 To solve the problem of
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3397 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3398 not honoring the
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3399 .Pe fileproc
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3400 profile entry,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3401 the community roughly agreed that a switch
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3402 .Sw -fileproc
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3403 should be added to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3404 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3405 to be able to pass a different fileproc.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3406 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	3407 the problem; it only removes a single symptom.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3408 The problem is that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3409 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3410 does not behave as expected.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3411 But all programs should behave as expected.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3412 Clear and simple concepts are a precondition for this.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3413 Hence, the real solution is having all MH tools read the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3414 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3415 Yet, the problem has a further aspect.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3416 It mainly originates in
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3417 .Pn mhmail .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3418 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3419 was intended to be a replacement for
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3420 .Pn mailx
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3421 on systems with MH installations.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3422 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3423 should have been able to use just like
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3424 .Pn mailx ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3425 but sending the message via MH's
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3426 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3427 instead of
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3428 .Pn sendmail .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3429 Using
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3430 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3431 should not be influenced by the question whether the user had
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3432 MH set up for himself or not.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3433 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3434 did not read the profile as this requests the user to set up MH
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3435 if not done yet.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3436 As
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3437 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3438 used
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3439 .Pn post ,
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 could not read the profile neither.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3442 This is the reason why
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3443 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3444 does not read the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3445 This is the reason for the actual problem.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3446 It was not much of a problem because
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3447 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3448 was not intended to be used by users directly.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3449 .Pn send
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3450 is the interactive front-end to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3451 .Pn post .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3452 .Pn send
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3453 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	3454 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3455 \(en an awkward solution.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3456 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3457 The important insight is that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3458 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3459 is no true MH tool.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3460 The concepts broke because this outlandish tool was treated as any other
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3461 MH tool.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3462 Instead it should have been treated accordingly to its foreign style.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3463 The solution is not to prevent the tools reading the profile but
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3464 to instruct them reading a different profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3465 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3466 could have set up a well-defined profile and caused all MH tools
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3467 in the session use it by exporting an environment variable.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3468 With this approach, no special cases would have been introduced,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3469 no surprises would have been caused.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3470 By writing a clean-profile-wrapper, the concept could have been
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3471 generalized orthogonally to the whole MH toolchest.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3472 Then Rose's motivation behind the decision that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3473 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3474 ignores the profile, as quoted by Jeffrey Honig,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3475 .[
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3476 nmh-workers post profile
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3477 .]
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3478 would have become possible:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3479 .QS
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3480 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	3481 what the man page says.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3482 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	3483 .QE
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3484 .LP
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3485 Yet, I consider this explanation shortsighted.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3486 We should rather regard theses two cases as just two different MH setups,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3487 based on two different profiles.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3488 Mapping such problems on the concepts of switching between different
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3489 profiles, solves them once for all.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3490 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3491 In mmh, the wish to have
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3492 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3493 as as replacement for
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3494 .Pn mailx
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3495 is considered obsolete.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3496 Mmh's
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3497 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3498 does no longer cover this use-case.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3499 Currently,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3500 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3501 is in a transition state.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3502 .Ci 32d4f9daaa70519be3072479232ff7be0500d009
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3503 It may become a front-end to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3504 .Pn comp ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3505 which provides an interface more convenient in some cases.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3506 In this case,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3507 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3508 will become an ordinary MH tool, reading the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3509 If, however, this idea will not convince, then
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3510 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3511 will be removed.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3512 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3513 Every program in the mmh toolchest reads the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3514 The only exception is
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3515 .Pn slocal ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3516 which is not considered part of the mmh toolchest.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3517 This MDA is only distributed with mmh, currently.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3518 Mmh has no
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3519 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3520 program, but
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3521 .Pn spost ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3522 which now reads the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3523 .Ci 3e017a7abbdf69bf0dff7a4073275961eda1ded8
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3524 With this change,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3525 .Pn send
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3526 and
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3527 .Pn spost
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3528 can be considered to be merged.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3529 .Pn spost
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	3530 is only invoked directly by the to-be-changed
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3531 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3532 implementation and by
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3533 .Pn rcvdist ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3534 which will require rework.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3535 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3536 The
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3537 .Fu context_foil()
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3538 function to pretend to have read an empty profile was removed.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3539 .Ci 68af8da96bea87a5541988870130b6209ce396f6
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3540 All mmh tools read the profile.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3541
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3542
127 4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	3543
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3544 .H2 "Standard Libraries
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3545 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3546 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	3547 Hence, MH included own implementations of functions
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3548 that are standardized and thus widely available today,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3549 but were not back then.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3550 Today, twenty years after the POSIX and ANSI C were published,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3551 developers can expect system to comply with these standards.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3552 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	3553 can and should be dropped.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3554 Kernighan and Pike advise: ``Use standard libraries.''
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3555 .[ [
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3556 kernighan pike practice of programming
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3557 .], p. 196]
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3558 Actually, MH had followed this advice in history,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3559 but it had not adjusted to the changes in this field.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3560 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3561 .Fu snprintf()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3562 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	3563 almost everywhere because of its high usefulness.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3564 In project's own implementation of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3565 .Fu snprintf()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3566 was dropped in March 2012 in favor for using the one of the
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3567 standard library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3568 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3569 Such decisions limit the portability of mmh
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3570 if systems don't support these standardized and widespread functions.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3571 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	3572 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3573 I am not yet thirty years old and my C and Unix experience comprises
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3574 only half a dozen years.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3575 Hence, I need to learn about the history in retrospective.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3576 I have not used those ancient constructs myself.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3577 I have not suffered from their incompatibilities.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3578 I have not longed for standardization.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3579 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	3580 were well established already.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3581 I have only read a lot of books about the (good) old times.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3582 This puts me in a difficult positions when working with old code.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3583 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	3584 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	3585 heart from their own experience.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3586 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3587 Being aware of the situation, I rather let people with more historic
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3588 experience replace ancient code constructs with standardized ones.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3589 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	3590 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	3591 also removing the conditionals compilation of now standardized features.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3592 Ken Hornstein and David Levine had their part in the work, too.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3593 Often, I only needed to pull over changes from nmh into mmh.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3594 These changes include many commits; these are among them:
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3595 .Ci 768b5edd9623b7238e12ec8dfc409b82a1ed9e2d
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3596 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3597 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3598 During my own work, I tidied up the \fIMH standard library\fP,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3599 .Fn libmh.a ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3600 which is located in the
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3601 .Fn sbr
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3602 (``subroutines'') directory in the source tree.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3603 The MH library includes functions that mmh tools usually need.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3604 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	3605 and folder handling, but as well
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3606 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	3607 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	3608 functions of the standard library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3609 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3610 I have replaced the
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3611 .Fu atooi()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3612 function with calls to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3613 .Fu strtoul()
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	3614 with the third parameter, the base, set to eight.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3615 .Fu strtoul()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3616 is part of C89 and thus considered safe to use.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3617 .Ci c490c51b3c0f8871b6953bd0c74551404f840a74
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3618 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3619 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	3620 .Fu memmove()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3621 and
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3622 .Fu strerror() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3623 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	3624 to support SunOS 4.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3625 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	3626 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	3627 put a load on mmh.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3628 .Ci b067ff5c465a5d243ce5a19e562085a9a1a97215
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3629 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3630 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3631 .Fu copy()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3632 function copies the string in argument one to the location in two.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3633 In contrast to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3634 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3635 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	3636 The code was adjusted to replace
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3637 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3638 with
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3639 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3640 except within
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3641 .Fu concat() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3642 where
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3643 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3644 was more convenient.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3645 Therefore, the definition of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3646 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3647 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	3648 .Fu concat()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3649 and its visibility is now limited to it.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3650 .Ci 552fd7253e5ee9e554c5c7a8248a6322aa4363bb
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3651 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3652 The function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3653 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3654 had been a generalized version of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3655 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3656 with minor differences.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3657 As all calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3658 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3659 had the slash (`/') as delimiter anyway,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3660 replacing
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3661 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3662 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	3663 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3664 became desirable.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3665 Unfortunately, many of the 54 calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3666 .Fu r1bindex()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3667 depended on a special behavior,
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3668 which differed from the POSIX specification for
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3669 .Fu basename() .
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3670 Hence,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3671 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3672 was kept but renamed to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3673 .Fu mhbasename() ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3674 fixing the delimiter to the slash.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3675 .Ci 240013872c392fe644bd4f79382d9f5314b4ea60
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3676 For possible uses of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3677 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3678 with a different delimiter,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3679 the ANSI C function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3680 .Fu strrchr()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3681 provides the core functionality.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3682 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3683 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3684 .Fu ssequal()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3685 function \(en apparently for ``substring equal'' \(en
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3686 was renamed to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3687 .Fu isprefix() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3688 because this is what it actually checks.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3689 .Ci c20b4fa14515c7ab388ce35411d89a7a92300711
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3690 Its source file had included the following comments, no joke.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3691 .VS
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3692 /*
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3693 * THIS CODE DOES NOT WORK AS ADVERTISED.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3694 * 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	3695 * 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	3696 * 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	3697 * should be kept if it's sufficient.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3698 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3699
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 * 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	3702 * 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	3703 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3704 VE
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3705 Two months later, it was completely removed by replacing it with
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3706 .Fu strncmp() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3707 .Ci b0b1dd37ff515578cf7cba51625189eb34a196cb
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3708
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3709
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3710
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3711
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3712
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3713 .H2 "User Data Locations
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3714 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3715 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	3716 The profile is a file named
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3717 .Fn \&.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3718 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3719 It contains the static configuration.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3720 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	3721 .Pe Path .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3722 The MH directory contains the mail storage and is the first
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3723 place to search for personal forms, scan formats, and similar
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3724 configuration files.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3725 The location of the MH directory can be chosen freely by the user.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3726 The default and usual name is a directory named
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3727 .Fn Mail
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3728 in the home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3729 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3730 The way MH data is splitted between profile and MH directory is a legacy.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3731 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	3732 configuration file.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3733 Why else should the mail storage and the configuration files be intermixed?
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3734 They are different kinds of data:
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3735 The data to be operated on and the configuration to change how
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3736 tools operate.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3737 Splitting the configuration between the profile and the MH directory
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3738 is bad.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3739 Merging the mail storage and the configuration in one directory is bad
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3740 as well.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3741 As the mail storage and the configuration were not separated sensibly
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3742 in the first place, I did it now.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3743 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3744 Personal mmh data is grouped by type, resulting in two distinct parts:
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3745 the mail storage and the configuration.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3746 In mmh, the mail storage directory still contains all the messages,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3747 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	3748 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	3749 located there.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3750 Therefore, the directory is no longer called the user's \fIMH directory\fP
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3751 but his \fImail storage\fP.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3752 Its location is still user-chosen, with the default name
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3753 .Fn Mail ,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3754 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3755 In mmh, the configuration is grouped together in
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3756 the hidden directory
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3757 .Fn \&.mmh
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3758 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3759 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	3760 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	3761 .Fn profile .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3762 The location of the profile is no longer fixed to
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3763 .Fn $HOME/.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3764 but to
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3765 .Fn $HOME/.mmh/profile .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3766 Having both, the file
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3767 .Fn $HOME/.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3768 and the configuration directory
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3769 .Fn $HOME/.mmh
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3770 appeared to be inconsistent.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3771 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	3772 Unix users.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3773 .Ci 7030d7edb099bff36ded7548bb5380f7acab4f9b
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3774 .P
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3775 MH allows users to have multiple MH setups.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3776 Therefore, it is necessary to select a different profile.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3777 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	3778 personal MH setup.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3779 In nmh, the environment variable
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3780 .Ev MH
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3781 could be used to specifiy a different profile.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3782 To operate in the same MH setup with a separate context,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3783 the
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3784 .Ev MHCONTEXT
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3785 environment variable could be used.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3786 This allows having own current folders and current messages in
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3787 each terminal, for instance.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3788 In mmh, three environment variables are used.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3789 .Ev MMH
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3790 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	3791 .Fn .mmh ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3792 .Ev MMHP
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3793 and
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3794 .Ev MMHC
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3795 override the paths to the profile and context files, respectively.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3796 This approach allows the set of personal configuration files to be chosen
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3797 independently from the profile, context, and mail storage.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3798 .Ci 7030d7edb099bff36ded7548bb5380f7acab4f9b
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3799 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3800 The separation of the files by type is sensible and convenient.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3801 The new approach has no functional disadvantages,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3802 as every setup I can imagine can be implemented with both approaches,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3803 possibly even easier with the new approach.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3804 The main achievement of the change is the clear and sensible split
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3805 between mail storage and configuration.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3806
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3807
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3808
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3809
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3810
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3811 .H2 "Modularization
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3812 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3813 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	3814 .Fn uip
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3815 (``user interface programs'') directory.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3816 Each tools has a source file with the same name.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3817 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3818 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3819 is built from
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3820 .Fn uip/rmm.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3821 Some source files are used for multiple programs.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3822 For example
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3823 .Fn uip/scansbr.c
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3824 is used for both,
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3825 .Pn scan
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3826 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3827 .Pn inc .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3828 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	3829 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	3830 32 programs depended on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3831 17 programs depended on one source file only.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3832 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	3833 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	3834 18 programs depend on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3835 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	3836 (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	3837 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	3838 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3839 Splitting the source code of a large program into multiple files can
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3840 increase the readability of its source code.
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3841 Most of the mmh tools, however, are simple and straight-forward programs.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3842 With the exception of the MIME handling tools,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3843 .Pn pick
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3844 is the largest tools.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3845 It contains 1\\|037 lines of source code (measured with
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3846 .Pn sloccount ), excluding the MH library.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3847 Only the MIME handling tools (\c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3848 .Pn mhbuild ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3849 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3850 .Pn show ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3851 etc.)
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3852 are larger.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3853 Splitting programs with less than 1\\|000 lines of code into multiple
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3854 source files seldom leads to better readability.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3855 For such tools, splitting makes sense
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3856 when parts of the code are reused in other programs,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3857 and the reused code fragment is not general enough
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3858 for including it in the MH library,
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3859 or, if the code has dependencies on a library that only few programs need.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3860 .Fn uip/packsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3861 for instance, provides the core program logic for the
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3862 .Pn packf
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3863 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3864 .Pn rcvpack
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3865 programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3866 .Fn uip/packf.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3867 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3868 .Fn uip/rcvpack.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3869 mainly wrap the core function appropriately.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3870 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	3871 As another example,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3872 .Fn uip/termsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3873 provides termcap support, which requires linking with a termcap or
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3874 curses library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3875 Including
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3876 .Fn uip/termsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3877 into the MH library would require every program to be linked with
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3878 termcap or curses, although only few of the programs require it.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3879 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3880 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	3881 into multiple source files improves the readability.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3882 The program
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3883 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3884 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	3885 lines of code in summary.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3886 The main code file
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3887 .Fn uip/mhstore.c
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3888 consists of 800 lines; the other 1\\|700 lines of code are reused in
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3889 other MIME handling tools.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3890 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	3891 a MH-MIME library, as a companion to the MH standard library.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3892 This is left open for the future.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3893 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	3894 The work already accomplished focussed on the non-MIME tools.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3895 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	3896 This eases the understanding of the code base.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3897 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3898 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3899 was built from six source files:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3900 .Fn comp.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3901 .Fn whatnowproc.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3902 .Fn whatnowsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3903 .Fn sendsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3904 .Fn annosbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3905 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3906 .Fn distsbr.c .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3907 In mmh, it builds from only two:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3908 .Fn comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3909 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3910 .Fn whatnowproc.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3911 In nmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3912 .Pn comp ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3913 the core function of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3914 .Pn whatnow ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3915 .Pn send ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3916 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3917 .Pn anno
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3918 were compiled into
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3919 .Pn comp .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3920 This saved the need to execute these programs with
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3921 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3922 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3923 .Fu exec() ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3924 two expensive system calls.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3925 Whereas this approach improved the time performance,
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3926 it interwove the source code.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3927 Core functionalities were not encapsulated into programs but into
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3928 function, which were then wrapped by programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3929 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3930 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3931 included the function
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3932 .Fu annotate() .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3933 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	3934 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3935 and called
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3936 .Fu annotate() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3937 Because the function
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3938 .Fu annotate()
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3939 was used like the tool
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3940 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3941 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	3942 When another pair of command line switches was added to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3943 .Pn anno ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3944 a rather ugly hack was implemented to avoid adding another parameter
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3945 to the function.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3946 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3947 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3948 Separation simplifies the understanding of program code
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3949 because the area influenced by any particular statement is smaller.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3950 The separating on the program-level is more strict than the separation
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3951 on the function level.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3952 In mmh, the relevant code of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3953 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3954 comprises the two files
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3955 .Fn uip/comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3956 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3957 .Fn uip/whatnowproc.c ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3958 together 210 lines of code.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3959 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3960 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3961 comprises six files with 2\\|450 lines.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3962 Not all of the code in these six files was actually used by
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3963 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3964 but the code reader needed to read all of the code first to know which
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3965 parts were used.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3966 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3967 As I have read a lot in the code base during the last two years,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3968 I learned about the easy and the difficult parts.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3969 Code is easy to understand if the influenced code area is small
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3970 and its boundaries are strictly defined.
346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	3971 Further more, the code needs to solve the problem in a straight-forward way.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3972 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3973 .\" XXX move this paragraph somewhere else?
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3974 Reading
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3975 .Pn rmm 's
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3976 source code in
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3977 .Fn uip/rmm.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3978 is my recommendation for a beginner's entry point into the code base of nmh.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3979 The reasons are that the task of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3980 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3981 is straight forward and it consists of one small source code file only,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3982 yet its source includes code constructs typical for MH tools.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3983 With the introduction of the trash folder in mmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3984 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3985 became a bit more complex, because it invokes
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3986 .Pn refile .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3987 Still, it is a good example for a simple tool with clear sources.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3988 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3989 Understanding
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3990 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3991 requires to read 210 lines of code in mmh, but ten times as much in nmh.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3992 Due to the aforementioned hack in
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3993 .Pn anno
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3994 to save the additional parameter, information passed through the program's
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3995 source base in obscure ways.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3996 Thus, understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3997 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3998 required understanding the inner workings of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3999 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4000 first.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4001 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	4002 to be examined.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4003 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	4004 have avoided obscure programming techniques.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4005 By separating the tools on the program-level, the boundaries are
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4006 clearly visible and technically enforced.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4007 The interfaces are calls to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4008 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4009 rather than arbitrary function calls.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4010 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4011 But the real problem is another:
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4012 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	4013 Understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4014 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4015 requires understanding
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4016 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4017 and
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4018 .Fn uip/sendsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4019 because
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4020 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4021 does annotate and send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4022 In nmh, there surely exists the tool
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4023 .Pn send ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4024 which does (almost) only send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4025 But
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4026 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4027 and
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4028 .Pn repl
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4029 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4030 .Pn forw
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4031 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4032 .Pn dist
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4033 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4034 .Pn whatnow
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4035 and
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4036 .Pn viamail ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4037 they all (!) have the same message sending function included, too.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4038 In result,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4039 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4040 sends messages without using
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4041 .Pn send .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4042 The situation is the same as if
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4043 .Pn grep
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4044 would page without
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4045 .Pn more
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4046 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	4047 .P
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4048 The clear separation on the surface \(en the toolchest approach \(en
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4049 is violated on the level below.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4050 This violation is for the sake of time performance.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4051 On systems where
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4052 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4053 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4054 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4055 are expensive, the quicker response might be noticable.
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	4056 In the old times, sacrificing readability and conceptional beauty for
3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	4057 speed might even have been a must to prevent MH from being unusably slow.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4058 Whatever the reasons had been, today they are gone.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4059 No longer should we sacrifice readability or conceptional beauty.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4060 No longer should we violate the Unix philosophy's ``one tool, one job''
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4061 guideline.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4062 No longer should we keep speed improvements that became unnecessary.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4063 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4064 Therefore, mmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4065 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4066 does no longer send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4067 In mmh, different jobs are divided among separate programs that
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4068 invoke each other as needed.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4069 In consequence,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4070 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4071 invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4072 .Pn whatnow
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4073 which thereafter invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4074 .Pn send .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4075 .Ci 3df5ab3c116e6d4a2fb4bb5cc9dfc5f781825815
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4076 .Ci c73c00bfccd22ec77e9593f47462aeca4a8cd9c0
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4077 The clear separation on the surface is maintained on the level below.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4078 Human users and the tools use the same interface \(en
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4079 annotations, for example, are made by invoking
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4080 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4081 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	4082 .Ci 469a4163c2a1a43731d412eaa5d9cae7d670c48b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4083 .Ci aed384169af5204b8002d06e7a22f89197963d2d
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4084 .Ci 3caf9e298a8861729ca8b8a84f57022b6f3ea742
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4085 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	4086 the decrease of
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4087 .Fn uip/*sbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4088 files confirm the improvement.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4089 .Ci 9e6d91313f01c96b4058d6bf419a8ca9a207bc33
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4090 .ci 81744a46ac9f845d6c2b9908074d269275178d2e
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4091 .Ci f0f858069d21111f0dbea510044593f89c9b0829
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4092 .Ci 0503a6e9be34f24858b55b555a5c948182b9f24b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4093 .Ci 27826f9353e0f0b04590b7d0f8f83e60462b90f0
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4094 .Ci d1da1f94ce62160aebb30df4063ccbc53768656b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4095 .Ci c42222869e318fff5dec395eca3e776db3075455
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4096 .P
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4097 .\" XXX move this paragraph up somewhere
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4098 One disadvantage needs to be taken with this change:
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4099 The compiler can no longer check the integrity of the interfaces.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4100 By changing the command line interfaces of tools, it is
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4101 the developer's job to adjust the invocations of these tools as well.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4102 As this is a manual task and regression tests, which could detect such
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	4103 problems, are not available yet, it is prone to errors.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4104 These errors will not be detected at compile time but at run time.
171 346ff7e201f5 Applied suggestions by Boris. markus schnalke <meillo@marmaro.de> parents: 169 diff changeset	4105 Installing regression tests is a pending task.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4106 In the best case, a uniform way of invoking tools from other tools
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4107 can be developed to allow automated testing at compile time.
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4108
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4109
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4110 .ig
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4111 XXX consider writing about mhl vs. mhlproc
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4112
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4113 sbr/showfile.c
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4114
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4115 23 /*
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4116 24 ** If you have your lproc listed as "mhl",
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4117 25 ** then really invoked the mhlproc instead
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4118 26 ** (which is usually mhl anyway).
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4119 27 */
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4120
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4121 Sat Nov 24 19:09:14 1984 /mtr (agent: Marshall Rose) <uci@udel-dewey>
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4122
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4123 sbr/showfile.c: if lproc is "mhl", use mhlproc for consistency
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4124 (Actually, user should use "lproc: show", "showproc: mhl".)
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4125 ..

Mercurial > docs > master

annotate discussion.roff @ 171:346ff7e201f5