docs/master: discussion.roff annotate

annotate discussion.roff @ 170:97461b0b34d2

style: Changed indent width; changed formating of lists. This follows Boris's suggestion.

author	markus schnalke <meillo@marmaro.de>
date	Tue, 10 Jul 2012 15:58:46 +0200
parents	f4ffe121a0a2
children	346ff7e201f5

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
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	9 nmh just before the mmh project started, i.e. Fall 2011.
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.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	48 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	49 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	50 various fields.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	51 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	52 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	53 .P
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	54 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	55 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	56 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	57 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	58
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	59
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	60 .H2 "Mail Transfer Facilities
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	61 .Id mail-transfer-facilities
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	62 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	63 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	64 agents, mmh is a MUA only.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	65 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	66 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	67 in the mmh project.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	68 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	69 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	70 experience with Sendmail.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	71 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	72 its success:
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	73 .[ [
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	74 costales sendmail
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	75 .], p. xviii]
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	76 .QS
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	77 Second, I limited myself to the routing function \(en
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	78 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	79 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	80 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	81 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	82 .QE
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	83 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	84 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	85 \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	86 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	87 .Pn post
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	88 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	89 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	90 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	91 Encryption and authentication for network connections
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	92 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	93 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	94 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	95 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	96 In mmh, this whole facility was simply cut off.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	97 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	98 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	99 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	100 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	101 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	102 .Pn sendmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	103 command, which almost any MSA provides.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	104 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	105 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	106 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	107 over to the MSA.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	108 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	109 .VS
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	110 #!/bin/sh
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	111 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	112 VE
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	113 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	114 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	115 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	116 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	117 .\" XXX implement it
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	118 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	119 To retrieve mail, the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	120 .Pn inc
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	121 command acted as an Mail Retrieval Agent (MRA).
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	122 It established network connections
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	123 and spoke POP3 to retrieve mail from remote servers.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	124 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	125 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	126 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	127 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	128 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	129 from remote locations.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	130 .Ci ab7b48411962d26439f92f35ed084d3d6275459c
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	131 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	132 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	133 (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	134 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	135 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	136 .Pn rcvstore
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	137 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	138 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	139 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	140 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	141 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	142 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	143 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	144 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	145 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	146 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	147 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	148 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	149 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	150 .\" XXX ueberleitung
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	151 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	152 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	153 .Pn more
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	154 or
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	155 .Pn less
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	156 aren't available, appears to be ridiculous.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	157 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	158 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	159 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	160 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	161 mcilroy unix phil
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	162 p. 53
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	163 .]
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 mcilroy bstj foreword
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	166 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	167 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	168 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	169 In other words:
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	170 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	171 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	172 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	173 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	174 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	175 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	176 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	177 mail handling tasks.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	178 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	179 rfc 821
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	180 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	181 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	182 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	183 Email once had been small and simple.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	184 At that time,
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	185 .Pn /bin/mail
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	186 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	187 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	188 (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	189 .[[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	190 brooks no silver bullet
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	191 .]])
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	192 Email systems reacted to this change: They grew.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	193 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	194 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	195 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	196 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	197 it was removed in nmh.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	198 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	199 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	200 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	201 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	202 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	203 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	204 that covers the field.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	205 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	206 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	207 .\" XXX ueberleitung ???
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	208 Functionality can be added in three different ways:
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	209 .BU
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	210 Implementing the function in the project itself.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	211 .BU
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	212 Depending on a library that provides the function.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	213 .BU
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	214 Depending on a program that provides the function.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	215 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	216 .\" XXX Rework sentence
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	217 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	218 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	219 and development work,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	220 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	221 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	222 but introduces dependencies on external software.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	223 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	224 but possibly limit the information exchange.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	225 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	226 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	227 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	228 .\" XXX ref
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	229 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	230 a lot of code.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	231 This should be avoided if possible.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	232 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	233 not in their existence.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	234 In mmh, library dependencies on
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	235 .Pn libsasl2
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	236 and
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	237 .Pn libcrypto /\c
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	238 .Pn libssl
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	239 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	240 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	241 dependencies.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	242 Besides providing stronger separation and greater flexibility,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	243 program dependencies also allowed
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	244 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	245 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	246 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	247 losing functionality is a convincing argument.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	248 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	249 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	250 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	251 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	252 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	253 of available documentation.
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	254 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	255 .\" XXX refs
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	256 .I Postfix ,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	257 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	258 .I masqmail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	259 and
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	260 .I dma ,
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	261 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	262 .I ssmtp
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	263 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	264 .I nullmailer .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	265 Choices for MRAs include
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	266 .I fetchmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	267 .I getmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	268 .I mpop
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	269 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	270 .I fdm .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	271
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	272
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	273 .H2 "Non-MUA Tools
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	274 .P
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	275 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	276 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	277 should be removed.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	278 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	279 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	280 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	281 and focused.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	282 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	283 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	284 .Pn conflict
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	285 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	286 .Ci 8b235097cbd11d728c07b966cf131aa7133ce5a9
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	287 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	288 It even checked
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	289 .Fn /etc/passwd
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	290 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	291 .Fn /etc/group
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	292 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	293 A tool like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	294 .Pn conflict
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	295 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	296 .\" XXX historic reasons?
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	297 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	298 .Pn rcvtty
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	299 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	300 .Ci 14767c94b3827be7c867196467ed7aea5f6f49b0
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	301 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	302 on receival of mail is obsolete.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	303 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	304 .Ev MAILPATH
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	305 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	306 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	307 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	308 .Pn write
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	309 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	310 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	311 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	312 VE
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	313 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	314 .Pn viamail
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	315 .\" XXX was macht viamail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	316 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	317 .Ci eda72d6a7a7c20ff123043fb7f19c509ea01f932
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	318 when the new attachment system was activated, because
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	319 .Pn forw
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	320 could then cover the task itself.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	321 The program
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	322 .Pn sendfiles
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	323 was rewritten as a shell script wrapper around
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	324 .Pn forw .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	325 .Ci 0e82199cf3c991a173e0ac8aa776efdb3ded61e6
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	326 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	327 .Pn msgchk
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	328 .\" XXX was macht msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	329 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	330 .Ci bb9360ead7eb7a3fedcce2eeedfc660014e41dbe ,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	331 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	332 A call to
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	333 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	334 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	335 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	336 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	337 VE
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	338 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	339 these details can be retrieved with
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	340 .Pn stat (1),
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	341 too.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	342 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	343 in a similar way, if truly necessary.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	344 As mmh's
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	345 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	346 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	347 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	348 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	349 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	350 .Pn msh
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	351 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	352 .Ci 916690191222433a6923a4be54b0d8f6ac01bd02
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	353 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	354 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	355 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	356 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	357 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	358 .Pn msh 's
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	359 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	360 be popular.
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	361 .P
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	362 Removing
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	363 .Pn msh
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	364 together with the truly archaic code relicts
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	365 .Pn vmh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	366 and
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	367 .Pn wmh
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	368 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	369 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	370 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	371 for the same functionality is an advantage.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	372 Less code means less bugs and less maintenance work.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	373 As
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	374 .Pn rcvtty
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	375 and
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	376 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	377 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	378 why should one keep them?
125 0e102cec0c73 s/stream-line/streamline/; s/motorbike/motorcycle/ markus schnalke <meillo@marmaro.de> parents: 124 diff changeset	379 Removing them streamlines mmh.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	380 .Pn viamail 's
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	381 use case is now partly obsolete and partly covered by
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	382 .Pn forw ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	383 hence there's no reason to still maintain it.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	384 .Pn conflict
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	385 is not related to the mail client, and
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	386 .Pn msh
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	387 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	388 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	389 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	390 Finally, there is
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	391 .Pn slocal .
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 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	394 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	395 the idea that mmh is a MUA only.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	396 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	397 should rather become a separate project.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	398 However,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	399 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	400 provides rule-based processing of messages, like filing them into
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	401 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	402 Although
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	403 .Pn slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	404 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	405 technical area (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	406 .Cf mail-transfer-facilities ),
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	407 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	408 As
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	409 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	410 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	411 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	412 .Pn slocal .
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	413 For anyone not using MH,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	414 .Pn slocal
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	415 would become yet another independent MDA, like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	416 .I procmail .
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	417 Then
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	418 .Pn slocal
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	419 could be installed without the complete MH system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	420 Likewise, mmh users could decide to use
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	421 .I procmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	422 without having a second, unused MDA,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	423 .Pn slocal ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	424 installed.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	425 That appears to be conceptionally the best solution.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	426 Yet,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	427 .Pn slocal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	428 is not split off.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	429 I defer the decision over
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	430 .Pn slocal
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	431 out of a need for deeper investigation.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	432 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	433 However, its continued existence is not significant because
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	434 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	435 is unrelated to the rest of the project.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	436
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	437
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	438
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	439 .H2 "Displaying Messages
155 75f20c925999 Fixed macro typo; and added typo fix found by Boris. markus schnalke <meillo@marmaro.de> parents: 154 diff changeset	440 .Id mhshow
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	441 .P
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	442 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	443 .\" XXX ref!!!
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	444 .Pn show
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	445 had been MH's message display program.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	446 .Pn show
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	447 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	448 .Pn mhl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	449 to have the files formatted.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	450 With MIME, this approach wasn't sufficient anymore.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	451 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	452 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	453 foreign charsets.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	454 .Pn show 's
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	455 understanding of messages and
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	456 .Pn mhl 's
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	457 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	458 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	459 Instead of extending these tools, additional tools were written from
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	460 scratch and added to the MH tool chest.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	461 Doing so is encouraged by the tool chest approach.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	462 Modular design is a great advantage for extending a system,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	463 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	464 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	465 .Pn mhn .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	466 The command
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	467 .Cl "mhn -show 42
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	468 would show the MIME message numbered 42.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	469 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	470 the split of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	471 .Pn mhn
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	472 into a set of specialized tools, which together covered the
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	473 multiple aspects of MIME.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	474 One of them was
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	475 .Pn mhshow ,
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	476 which replaced
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	477 .Cl "mhn -show" .
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	478 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	479 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	480 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	481 .Pn show
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	482 and
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	483 .Pn mhshow .
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	484 To ease the life of users,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	485 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	486 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	487 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	488 if displaying the message would be beyond
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	489 .Pn show 's
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	490 abilities.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	491 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	492 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	493 (possibly through
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	494 .Pn next
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	495 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	496 .Pn prev )
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	497 and get the message printed with either
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	498 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	499 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	500 .Pn mhshow ,
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	501 whatever was more appropriate.
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	502 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	503 Having two similar tools for essentially the same task is redundant.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	504 Usually,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	505 users wouldn't distinguish between
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	506 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	507 and
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	508 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	509 in their daily mail reading.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	510 Having two separate display programs was therefore mainly unnecessary
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	511 from a user's point of view.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	512 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	513 to ensure that the programs behaved in a similar way,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	514 because they were used like a single tool.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	515 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	516 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	517 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	518 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	519 As
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	520 .Pn mhshow
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	521 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	522 to drop
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	523 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	524 in favor of using
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	525 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	526 exclusively.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	527 .Ci 4c1efddfd499300c7e74263e57d8aa137e84c853
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	528 Removing
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	529 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	530 is no loss in function, because functionally
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	531 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	532 covers it completely.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	533 The old behavior of
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	534 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	535 can still be emulated with the simple command line:
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	536 .VS
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	537 mhl `mhpath c`
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	538 VE
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	539 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	540 For convenience,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	541 .Pn mhshow
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	542 was renamed to
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	543 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	544 after
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	545 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	546 was gone.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	547 It is clear that such a rename may confuse future developers when
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	548 trying to understand the history.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	549 Nevertheless, I consider the convenience on the user's side,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	550 to call
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	551 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	552 when they want a message to be displayed, to outweigh the inconvenience
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	553 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	554 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	555 To prepare for the transition,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	556 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	557 was reworked to behave more like
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	558 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	559 first.
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	560 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	561 .Cf mhshow )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	562 .\" XXX code commits?
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	563 Once the tools behaved more alike, the replacing appeared to be
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	564 even more natural.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	565 Today, mmh's new
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	566 .Pn show
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	567 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	568 with the difference
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	569 that today it handles MIME messages as well as non-MIME messages.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	570 The outcome of the transition is one program less to maintain,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	571 no second display program for users to deal with,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	572 and less system complexity.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	573 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	574 Still, removing the old
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	575 .Pn show
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	576 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	577 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	578 .Pn show ,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	579 .\" XXX
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	580 however there is no alternative;
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	581 supporting MIME demands higher essential complexity.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	582
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	583 .ig
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	584 XXX
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	585 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	586
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	587 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	588 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	589 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	590 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	591 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	592 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	593 .Ci 70b2643e0da8485174480c644ad9785c84f5bff4
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	594 ..
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	595
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
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	598
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	599 .H2 "Configure Options
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	600 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	601 Customization is a double-edged sword.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	602 It allows better suiting setups, but not for free.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	603 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	604 There is the cost of less tested setups, because there are
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	605 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	606 Additionally, there is the cost of choice itself.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	607 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	608 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	609 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	610 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	611 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	612 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	613 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	614 fifteen to three.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	615
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	616 .U3 "Mail Transfer Facilities
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	617 .P
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	618 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	619 options vanished:
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	620 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	621 The switches
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	622 .Sw --with-tls
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	623 and
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	624 .Sw --with-cyrus-sasl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	625 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	626 .\" XXX cf
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	627 .\" XXX gruende kurz wiederholen
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	628 This is not needed anymore.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	629 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	630 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	631 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	632 .\" XXX cf
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	633 .\" XXX ``For the same reason ...''
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	634 The configure switch
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	635 .Sw --enable-pop
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	636 activated the message retrieval facility.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	637 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	638 support had been small.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	639 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	640 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	641 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	642 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	643 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	644 one that needed to be tested.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	645 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	646 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	647 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	648 of the original program.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	649 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	650 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	651 Two other options only specified default configuration values:
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	652 .Sw --with-mts
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	653 defined the default transport service.
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	654 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	655 With
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	656 .Sw --with-smtpservers
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	657 default SMTP servers could be specified.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	658 .Ci 128545e06224233b7e91fc4c83f8830252fe16c9
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	659 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	660 .\" XXX code ref
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	661 In mmh, all messages are handed over to
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	662 .Pn sendmail
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	663 for transportation.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	664
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	665
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	666 .U3 "Backup Prefix
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	667 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	668 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	669 filenames to tag them as deleted.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	670 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	671 .\" XXX Zeitlich ordnen
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	672 In July 2000, Kimmo Suominen introduced
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	673 the configure option
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	674 .Sw --with-hash-backup
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	675 to change the default to the hash symbol `\f(CW#\fP'.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	676 The choice was probably personal preference, because first, the
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	677 option was named
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	678 .Sw --with-backup-prefix.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	679 and had the prefix symbol as argument.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	680 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	681 for Autoconf,
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	682 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	683 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	684 personal preference only.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	685 Being related or not, words that start with the hash symbol
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	686 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	687 Thus, the command line
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	688 .Cl "rm #13 #15
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	689 calls
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	690 .Pn rm
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	691 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	692 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	693 To delete the backup files,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	694 .Cl "rm ./#13 ./#15"
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	695 needs to be used.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	696 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	697 data loss.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	698 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	699 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	700 .Pe backup-prefix ,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	701 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	702 .Ci 6c40d481d661d532dd527eaf34cebb6d3f8ed086
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	703 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	704 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	705 it suited better.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	706 .P
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	707 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	708 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	709 .Cf trash-folder )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	710 removed the need for the backup prefix completely.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	711 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	712 .Ci ca0b3e830b86700d9e5e31b1784de2bdcaf58fc5
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	713
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	714
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	715 .U3 "Editor and Pager
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	716 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	717 The two configure options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	718 .CW --with-editor=EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	719 .CW --with-pager=PAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	720 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	721 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	722 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	723 different systems.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	724 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	725 The programs
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	726 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	727 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	728 .Pn more
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	729 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	730 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	731 (The specifications for
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	732 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	733 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	734 .Pn more
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	735 appeared in
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	736 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	737 posix 1987
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	738 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	739 and,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	740 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	741 posix 1992
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	742 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	743 respectively.)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	744 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	745 .Ci 5d43a99db70c12a673028c7758c20cbe3e13ef5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	746 Not changed were the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	747 .Pe editor
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	748 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	749 .Pe moreproc
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	750 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	751 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	752 variables
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	753 .Ev VISUAL
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	754 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	755 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	756 if they are set.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	757 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	758 taking the first available and non-empty item:
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	759 .IP (1)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	760 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	761 .Ev MMHEDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	762 .IP (2)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	763 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	764 .Pe Editor
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	765 .IP (3)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	766 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	767 .Ev VISUAL
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	768 .IP (4)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	769 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	770 .Ev EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	771 .IP (5)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	772 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	773 .Pn vi .
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	774 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	775 .Ci f85f4b7ae62e3d05a945dcd46ead51f0a2a89a9b
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	776 .P
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	777 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	778 also taking the first available and non-empty item:
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	779 .IP (1)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	780 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	781 .Ev MMHPAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	782 .IP (2)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	783 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	784 .Pe Pager
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	785 (replaces
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	786 .Pe moreproc )
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	787 .IP (3)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	788 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	789 .Ev PAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	790 .IP (4)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	791 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	792 .Pn more .
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	793 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	794 .Ci 0c4214ea2aec6497d0d67b436bbee9bc1d225f1e
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	795 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	796 By respecting the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	797 .Ev VISUAL /\c
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	798 .Ev EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	799 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	800 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	801 environment variables,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	802 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	803 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	804
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	805
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	806 .U3 "ndbm
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	807 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	808 .Pn slocal
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	809 used to depend on
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	810 .I ndbm ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	811 a database library.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	812 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	813 messages delivered.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	814 This enables
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	815 .Pn slocal
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	816 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	817 (This features was enabled by the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	818 .Sw -suppressdup
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	819 switch.)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	820 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	821 A variety of versions of the database library exist.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	822 .[
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	823 wolter unix incompat notes dbm
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	824 .]
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	825 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	826 Further more, the configure switches
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	827 .Sw --with-ndbm=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	828 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	829 .Sw --with-ndbmheader=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	830 were added to help with difficult setups that would
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	831 not be detected automatically or correctly.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	832 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	833 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	834 .Pn slocal ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	835 the dependency on
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	836 .I ndbm
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	837 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	838 .Ci ecd6d6a20cb7a1507e3a20d6c4cb3a1cf14c6bbf
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	839 The change removed functionality too, but that is minor to the
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	840 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	841 .\" 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	842
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	843 .U3 "mh-e Support
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	844 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	845 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	846 .Sw --disable-mhe
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	847 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	848 Mh-e is the Emacs front-end to MH.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	849 It requires MH to provide minor additional functions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	850 The
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	851 .Sw --disable-mhe
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	852 configure option could switch these extensions off.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	853 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	854 only the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	855 .Sw -build
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	856 switches of
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	857 .Pn forw
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	858 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	859 .Pn repl
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	860 are left to be mh-e extensions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	861 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	862 In consequence, the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	863 .Sw --disable-mhe
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	864 configure option was removed
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	865 .Ci a7ce7b4a580d77b6c2c4d980812beb589aa4c643
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	866 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	867 needed to be tested.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	868 .\" XXX datum?
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	869 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	870 .P
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	871 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	872 to be able to use mmh as back-end.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	873 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	874 .Sw -build
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	875 switches would require more rework.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	876
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	877 .U3 "Masquerading
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	878 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	879 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	880 .Sw --enable-masquerade
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	881 could take up to three arguments:
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	882 `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	883 They activated different types of address masquerading.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	884 All of them were implemented in the SMTP-speaking
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	885 .Pn post
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	886 command, which provided an MSA.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	887 Address masquerading is an MTA's task and mmh does not cover
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	888 this field anymore.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	889 Hence, true masquerading needs to be implemented in the external MTA.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	890 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	891 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	892 .I mmailid
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	893 masquerading type is the oldest one of the three and the only one
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	894 available in the original MH.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	895 It provided a
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	896 .I username
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	897 to
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	898 .I fakeusername
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	899 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	900 The man page
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	901 .Mp mh-tailor(5)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	902 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	903 .QS
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	904 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	905 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	906 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	907 `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	908 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	909 ``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	910 .QE
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	911 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	912 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	913 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	914 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	915 does the reverse mapping for incoming mail (aliasing), too.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	916 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	917 mail software on the system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	918 Hence, mmailid masquerading was removed.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	919 .Ci 0836c8000ccb34b59410ef1c15b1b7feac70ce5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	920 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	921 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	922 .I username_extension
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	923 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	924 specified by the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	925 .Ev USERNAME_EXTENSION
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	926 environment variable, to it.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	927 This provided support for the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	928 .I user-extension
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	929 feature of qmail and the similar
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	930 .I "plussed user
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	931 processing of sendmail.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	932 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	933 motivated by the fact that
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	934 .Pn spost
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	935 hadn't supported it already.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	936 .Ci 2abae0bfd0ad5bf898461e50aa4b466d641f23d9
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	937 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	938 .\" XXX covered by next paragraph
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	939 .\" 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	940 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	941 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	942 .I draft_from
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	943 masquerading type instructed
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	944 .Pn post
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	945 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	946 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	947 header field as SMTP envelope sender.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	948 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	949 .Ci b14ea6073f77b4359aaf3fddd0e105989db9
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	950 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	951 with technical differences.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	952 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	953 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	954 by the MTA.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	955 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	956 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	957 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	958 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	959 header field and thereby propose
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	960 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	961 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	962 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	963 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	964 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	965 message header (\c
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	966 .Pn sendmail 's
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	967 .Sw -t
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	968 switch).
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	969 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	970 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	971 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	972 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	973
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	974 .U3 "Remaining Options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	975 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	976 Two configure options remain in mmh.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	977 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	978 .Sw --with-locking=[dot\|fcntl\|flock\|lockf] .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	979 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	980 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	981 requires deeper technical investigation into the topic.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	982 The other option,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	983 .Sw --enable-debug ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	984 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	985 This option is likely to stay.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	986
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	987
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	988
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	989
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	990 .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	991 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	992 The command line switches of MH tools follow the X Window style.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	993 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	994 For example:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	995 .Cl "-truncate" .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	996 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	997 .Sw -help ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	998 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	999 .Sw -Version
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1000 (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	1001 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1002 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	1003 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	1004 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	1005 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	1006 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	1007 of a program.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1008 Changing the behavior of programs provides flexibility and customization
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1009 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	1010 usage of the program.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1011 .\" XXX: Ref
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1012 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	1013 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	1014 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	1015 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	1016 problem of MH:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1017 .[ [
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1018 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1019 .], p. 12]
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1020 .QS
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1021 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	1022 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	1023 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	1024 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	1025 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	1026 .QP
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1027 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	1028 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	1029 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	1030 .QE
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1031 .P
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1032 Being reluctant to adding new switches \(en or `options',
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1033 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	1034 the other part is removing hardly used switches.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1035 Nmh's tools had lots of switches already implemented,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1036 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	1037 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	1038 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	1039 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	1040 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	1041 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	1042 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	1043 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	1044 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	1045 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	1046 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	1047 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	1048 ``[...]
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1049 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1050 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	1051 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	1052 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	1053 but this is not practical.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1054 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	1055 them strictly.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1056 Nevertheless, removing obsolete switches still is an effective approach
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1057 to deal with the problem.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1058 Working on an experimental branch without an established user base,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1059 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	1060 functions.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1061 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1062 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	1063 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1064 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	1065 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	1066 have remained in mmh's
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1067 .Pn send .
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1068 (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	1069 .P
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1070 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	1071 that is available in both nmh and mmh.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1072 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	1073 Visible and hidden switches were counted,
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1074 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	1075 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	1076 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	1077 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	1078 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	1079 has 4 now.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1080 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	1081 to 234.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1082
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1083 .KS
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1084 .in 1c
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1085 .so input/switches.grap
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1086 .KE
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1087
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1088 .P
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1089 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	1090 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	1091 Sometimes, however, the work flow was the other way:
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1092 I looked through the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1093 .Mp mh-chart (7)
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1094 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	1095 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	1096 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	1097 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	1098 the number of switches per command.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1099
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1100
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1101 .U3 "Draft Folder Facility
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1102 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1103 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	1104 the single draft message to the draft folder facility.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1105 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1106 .\" XXX ref to section ...
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1107 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	1108 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	1109 .[
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1110 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1111 .]
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1112 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	1113 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	1114 possible to remove the
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1115 .Sw -[no]draftfolder ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1116 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1117 .Sw -draftmessage
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1118 switches from
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1119 .Pn comp ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1120 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1121 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1122 .Pn dist ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1123 .Pn whatnow ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1124 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1125 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1126 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1127 The only flexibility removed with this change is having multiple
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1128 draft folders within one profile.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1129 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	1130 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	1131 .Sw -draft
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1132 switch of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1133 .Pn anno ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1134 .Pn refile ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1135 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1136 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1137 was removed.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1138 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	1139 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	1140 (cf. Sec.
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1141 .Cf draft-folder )
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1142 Furthermore,
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1143 .Pn comp
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1144 no longer needs a
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1145 .Sw -file
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1146 switch as the draft folder facility together with the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1147 .Sw -form
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1148 switch are sufficient.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1149
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1150
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1151 .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	1152 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1153 .Pn anno
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1154 had the switches
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1155 .Sw -[no]inplace
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1156 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	1157 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	1158 Following the assumption that linked messages should truly be the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1159 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	1160 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1161 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	1162 .Sw -inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1163 was made the only behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1164 .Ci c8195849d2e366c569271abb0f5f60f4ebf0b4d0
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1165 The
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1166 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1167 switches of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1168 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1169 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1170 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1171 .Pn dist
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1172 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	1173 .Pn anno .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1174 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1175 .Pn burst
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1176 also had
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1177 .Sw -[no]inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1178 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	1179 With
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1180 .Sw -inplace ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1181 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	1182 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	1183 after this message, renumbering all following messages.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1184 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	1185 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	1186 Nontheless, this behavior appeared less elegant than the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1187 .Sw -noinplace
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1188 behavior, which already had been the default.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1189 Nmh's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1190 .Mp burst (1)
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1191 man page reads:
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1192 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1193 If
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1194 .Sw -noinplace
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1195 is given, each digest is preserved, no table
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1196 of contents is produced, and the messages contained within
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1197 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	1198 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	1199 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1200 .LP
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1201 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	1202 .Sw -inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1203 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	1204 it caused.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1205 .Sw -noinplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1206 was chosen to be the definitive behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1207 .Ci 68a686adeb39223a5e1ad35e4a24890ec053679d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1208
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1209
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1210 .U3 "Forms and Format Strings
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1211 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1212 Historically, the tools that had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1213 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1214 switches to supply a form file had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1215 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1216 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	1217 on the command line directly.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1218 In consequence, the following two lines equaled:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1219 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1220 scan -form scan.mailx
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1221 scan -format "`cat .../scan.mailx`"
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1222 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1223 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1224 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1225 switches were dropped in favor for extending the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1226 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1227 switches.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1228 .Ci f51956be123db66b00138f80464d06f030dbb88d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1229 If their argument starts with an equal sign (`='),
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1230 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	1231 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	1232 Thus, now the following two lines equal:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1233 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1234 scan -form scan.mailx
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1235 scan -form "=`cat .../scan.mailx`"
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1236 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1237 This rework removed the prefix collision between
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1238 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1239 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1240 .Sw -format .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1241 Now, typing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1242 .Sw -fo
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1243 suffices to specify form or format string.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1244 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1245 The different meaning of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1246 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1247 for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1248 .Pn repl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1249 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1250 .Pn forw
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1251 was removed in mmh.
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 completely switched to MIME-type forwarding, thus removing the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1254 .Sw -[no]format .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1255 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1256 For
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1257 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1258 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1259 .Sw -[no]format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1260 switches were reworked to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1261 .Sw -[no]filter
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1262 switches.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1263 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1264 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1265 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1266 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1267 .Pn send
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1268 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1269 .Pn post ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1270 which had a third meaning,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1271 were removed likewise.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1272 .Ci f3cb7cde0e6f10451b6848678d95860d512224b9
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1273 Eventually, the ambiguity of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1274 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1275 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	1276
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1277
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1278 .U3 "MIME Tools
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1279 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1280 The MIME tools, which were once part of
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1281 .Pn mhn
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1282 .\" XXX
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1283 (whatever that stood for),
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1284 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	1285 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1286 .Sw -[no]realsize
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1287 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1288 .Pn mhbuild
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1289 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1290 .Pn mhlist
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1291 were removed, doing real size calculations always now
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1292 .Ci 8d8f1c3abc586c005c904e52c4adbfe694d2201c ,
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1293 as nmh's
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1294 .Mp mhbuild (1)
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1295 man page states
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1296 ``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	1297 This small delay is not noticable on modern systems.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1298 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1299 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1300 .Sw -[no]check
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1301 switches were removed together with the support for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1302 .Hd Content-MD5
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1303 header fields.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1304 .[
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1305 rfc 1864
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1306 .]
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1307 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1308 (cf. Sec.
63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1309 .Cf content-md5 )
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1310 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1311 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1312 .Sw -[no]ebcdicsafe
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1313 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1314 .Sw -[no]rfc934mode
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1315 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1316 .Pn mhbuild
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1317 were removed because they are considered obsolete.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1318 .Ci 01a3480928da485b4d6109d36d751dfa71799d58
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1319 .Ci 3363e2624dce0eb8164cf8b3f1ab385c8ff72e88
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1320 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1321 Content caching of external MIME parts, activated with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1322 .Sw -rcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1323 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1324 .Sw -wcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1325 switches was completely removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1326 .Ci d1fefd9f614e4dc3cda16da6c69133c1b2005269
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1327 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	1328 for them appears to be unnecessary.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1329 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1330 In pre-MIME times,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1331 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1332 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	1333 Therefore,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1334 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1335 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	1336 switches from 21 to 6.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1337 .Ci 350ad6d3542a07639213cf2a4fe524e829c1e7b6
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1338 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1339
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1340
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 .U3 "Header Printing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1344 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1345 .Pn folder 's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1346 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	1347 displaying the header line makes little sense.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1348 Hence, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1349 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1350 switch was removed and headers are never printed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1351 .Ci 601cc73d1fa05ce96faa728f036d6c51b91701c7
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1352 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1353 In
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1354 .Pn mhlist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1355 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1356 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1357 switches were removed, too.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1358 .Ci b24f96523aaf60e44e04a3ffb1d22e69a13a602f
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1359 But in this case headers are always printed,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1360 because the output is not self-explaining.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1361 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1362 .Pn scan
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1363 also had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1364 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1365 switches.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1366 Printing the header had been sensible until the introduction of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1367 format strings made it impossible to display the column headings.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1368 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	1369 As this information can be perfectly retrieved by
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1370 .Pn folder
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1371 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1372 .Pn date ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1373 consequently, the switches were removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1374 .Ci c477dc5d1d03fa6d9a8ab3dd3508c63cbddc044e
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1375 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1376 By removing all
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1377 .Sw -header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1378 switches, the collision with
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1379 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1380 on the first two letters was resolved.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1381 Currently,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1382 .Sw -h
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1383 evaluates to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1384 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1385 for all tools of mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1386
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1387
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1388 .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	1389 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1390 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1391 .Sw -noedit
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1392 switch of
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1393 .Pn comp ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1394 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1395 .Pn forw ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1396 .Pn dist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1397 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1398 .Pn whatnow
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1399 was removed, but it can now be replaced by specifying
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1400 .Sw -editor
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1401 with an empty argument.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1402 .Ci 75fca31a5b9d5c1a99c74ab14c94438d8852fba9
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1403 (Specifying
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1404 .Cl "-editor /bin/true
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1405 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	1406 .P
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1407 The more important change is the removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1408 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1409 switch.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1410 .Ci ee4f43cf2ef0084ec698e4e87159a94c01940622
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1411 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	1412 man page for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1413 .Mp comp (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1414 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1415 The
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1416 .Sw -editor
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1417 .Ar editor
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1418 switch indicates the editor to use for
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1419 the initial edit. Upon exiting from the editor,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1420 .Pn comp
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1421 will invoke the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1422 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1423 program. See
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1424 .Mp whatnow (1)
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1425 for a discussion of available options.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1426 The invocation of this program can be
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1427 inhibited by using the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1428 .Sw -nowhatnowproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1429 switch. (In truth of fact, it is the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1430 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1431 program which starts the initial edit.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1432 Hence,
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1433 .Sw -nowhatnowproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1434 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	1435 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1436 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1437 Effectively, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1438 .Sw -nowhatnowproc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1439 switch creates only a draft message.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1440 As
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1441 .Cl "-whatnowproc /bin/true
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1442 causes the same behavior, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1443 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1444 switch was removed for being redundant.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1445 Likely, the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1446 .Sw -nowhatnowproc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1447 switch was intended to be used by front-ends.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1448
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1449
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 .U3 "Various
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1452 .BU
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1453 With the removal of MMDF maildrop format support,
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1454 .Pn packf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1455 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1456 .Pn rcvpack
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1457 no longer needed their
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1458 .Sw -mbox
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1459 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1460 .Sw -mmdf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1461 switches.
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1462 .Sw -mbox
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1463 is the sole behavior now.
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1464 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1465 In the same go,
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1466 .Pn packf
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1467 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1468 .Pn rcvpack
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1469 were reworked and their
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1470 .Sw -file
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1471 switch became unnecessary.
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1472 .Ci ca1023716d4c2ab890696f3e41fa0d94267a940e
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1473
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1474 .BU
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1475 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	1476 .Pn scan 's
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1477 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1478 .Pn mhl 's
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1479 .Sw -[no]clear
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1480 switches
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1481 .Ci e57b17343dcb3ff373ef4dd089fbe778f0c7c270
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1482 .Ci 943765e7ac5693ae177fd8d2b5a2440e53ce816e ).
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1483 Neither will
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1484 .Pn mhl
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1485 ring the bell (\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1486 .Sw -[no]bell
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1487 .Ci e11983f44e59d8de236affa5b0d0d3067c192e24 )
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1488 nor page the output itself (\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1489 .Sw -length
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1490 .Ci 5b9d883db0318ed2b84bb82dee880d7381f99188 ).
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1491 .\" XXX Ref
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1492 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	1493 .Sw -[no]moreproc
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1494 command line switches for
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1495 .Pn mhl
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1496 and
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1497 .Pn show /\c
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1498 .Pn mhshow .
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1499 .Ci 39e87a75b5c2d3572ec72e717720b44af291e88a
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1500
b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1501 .BU
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1502 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	1503 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1504 switch was renamed to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1505 .Sw -Version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1506 (with capital `V').
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1507 .Ci 32b2354dbaf4bf934936eb5b102a4a3d2fdd209a
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1508 Every program has the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1509 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1510 switch but its first three letters collided with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1511 .Sw -verbose
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1512 switch, present in many programs.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1513 The rename solved this problem once for all.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1514 Although this rename breaks a basic interface, having the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1515 .Sw -V
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1516 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	1517
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1518 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1519 .Sw -[no]preserve
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1520 of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1521 .Pn refile
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1522 was removed
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1523 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1524 because what use was it anyway?
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	1525 Quoting nmh's man page
165 ea6eec1722d1 Improvement by Boris Kraut. markus schnalke <meillo@marmaro.de> parents: 164 diff changeset	1526 .Mp refile (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1527 .QS
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1528 Normally when a message is refiled, for each destination
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1529 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	1530 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	1531 .Sw -preserv
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1532 [sic!] switch will override this message renaming, and try
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1533 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	1534 particular folder occurs when using the
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1535 .Sw -preserve
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1536 switch, then
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1537 .Pn refile
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1538 will use the next available message number which
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1539 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	1540 .QE
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	1541
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1542 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1543 The removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1544 .Sw -[no]reverse
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1545 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1546 .Pn scan
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1547 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1548 is a bug fix, supported by the comments
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1549 ``\-[no]reverse under #ifdef BERK (I really HATE this)''
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1550 by Rose and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1551 ``Lists messages in reverse order with the `\-reverse' switch.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1552 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	1553 .\" XXX Ref: welche datei genau.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1554 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	1555 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	1556 thereafter.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1557
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1558
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1559 .ig
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1560
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1561 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	1562
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1563 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	1564
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1565 mhmail: resent queued
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1566 inc: snoop, (pop)
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1567
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1568 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	1569 [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	1570
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1571 prompter: [no]doteof
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1572
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1573 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	1574
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1575 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	1576 [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	1577 attach attachformat
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1578 whatnow: (noedit) attach
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1579
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1580 slocal: [no]suppressdups
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1581
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1582 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	1583 [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	1584
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1585 whom: ???
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1586
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1587 ..
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1588
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 .ig
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1591
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1592 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1593 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	1594 or on the three-letter prefix for the `no' variants.
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1595 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	1596 the user must type.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1597 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	1598
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1599 ..
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1600
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1601
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1602 .\" XXX: whatnow prompt commands
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1603
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1604
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1605
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1606
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	1607 .\" --------------------------------------------------------------
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	1608 .H1 "Modernizing
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1609 .P
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1610 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	1611 increasingly extended.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1612 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	1613 existing behavior.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1614 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	1615 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	1616 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	1617 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	1618 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	1619 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	1620 .Cf code-style .
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1621
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1622
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1623 .H2 "Code Relicts
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1624 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1625 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	1626 .\" 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	1627 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	1628 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	1629 functionality I considered ancient.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1630 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	1631 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	1632 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	1633 .\" XXX ugs
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1634 do the work:
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 paul vixie edginess nmh-workers
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1637 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1638 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1639 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	1640 discuss whether to keep using vfork, just note in [sic!] passing, [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1641 we don't need a separate branch for removing vmh
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1642 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	1643 or depending on pure ansi/posix ``libc''.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1644 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	1645 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	1646 should just be modern. [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1647 let's push forward, aggressively.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1648 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1649 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1650 I did so already in the months before.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1651 I pushed forward.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1652 .\" XXX semicolon ?
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1653 I simply dropped the cruft.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1654 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1655 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	1656 careful thinking, but whether having had contact with this particular
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1657 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	1658 I explained my reasons in the commit messages
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1659 in the version control system.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1660 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	1661 if I have missed an important aspect.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1662 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	1663 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	1664 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	1665 .\" 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	1666
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1667
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1668 .U3 "Forking
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	1669 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1670 Being a tool chest, MH creates many processes.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1671 In earlier times
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1672 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1673 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	1674 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	1675 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	1676 case wherein the image is replaced by a call to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1677 .Fu exec()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1678 right after having forked the child process.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1679 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1680 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1681 system call was invented to speed up this particular case.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1682 It completely omits the duplication of the image.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1683 On old systems this resulted in significant speed ups.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1684 Therefore MH used
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1685 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1686 whenever possible.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1687 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1688 Modern memory management units support copy-on-write semantics, which make
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1689 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1690 almost as fast as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1691 .Fu vfork() .
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1692 The man page of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1693 .Mp vfork (2)
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1694 in FreeBSD 8.0 states:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1695 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1696 This system call will be eliminated when proper system sharing mechanisms
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1697 are implemented. Users should not depend on the memory sharing semantics
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1698 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	1699 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1700 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1701 Vixie supports the removal with the note that ``the last
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1702 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	1703 Eunice. that was 1987''.
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 nmh-workers vixie edginess
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1706 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1707 I replaced all calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1708 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1709 with calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1710 .Fu fork() .
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1711 .Ci 40821f5c1316e9205a08375e7075909cc9968e7d
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1712 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1713 Related to the costs of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1714 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1715 is the probability of its success.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1716 In the eighties, on heavy loaded systems, calls to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1717 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1718 were prone to failure.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1719 Hence, many of the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1720 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1721 calls in the code were wrapped into loops to retry the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1722 .Fu fork()
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1723 several times, to increase the chances to succeed, eventually.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1724 On modern systems, a failing
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1725 .Fu fork()
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1726 call is unusual.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1727 Hence, in the rare case when
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1728 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1729 fails, mmh programs simply abort.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1730 .Ci 5fbf37ee68e018998ada61eeab73e035b26834b6
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1731
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1732
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1733 .U3 "Header Fields
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1734 .BU
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1735 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1736 .Hd Encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1737 header field was introduced by RFC\\|822,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1738 but already marked as legacy in RFC\\|2822.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1739 Today, OpenPGP provides the basis for standardized exchange of encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1740 messages [RFC\\|4880, RFC\\|3156].
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1741 Hence, the support for
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1742 .Hd Encrypted
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1743 header fields is removed in mmh.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1744 .Ci 064527f7b57ab050e5af13e15ad99aeeab125857
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1745 .BU
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1746 The native support for
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1747 .Hd Face
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1748 header fields has been removed, as well.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1749 .Ci 8e5be81f784682822f5e868c1bf3c8624682bd23
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1750 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	1751 .Hd X-Face
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1752 header field in its intent,
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1753 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	1754 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	1755 it contains the hostname and UDP port where the image
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1756 date can be retrieved.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1757 There is even a third Face system,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1758 which is the successor of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1759 .Hd X-Face ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1760 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	1761 .Hd Face
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1762 header field.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1763 It was invented in 2005 and supports colored PNG images.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1764 None of the Face systems described here is popular today.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1765 Hence, mmh has no direct support for them.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1766 .BU
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	1767 .Id content-md5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1768 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1769 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1770 header field was introduced by RFC\\|1864.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1771 It provides detection of data corruption during the transfer.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1772 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	1773 [RFC\\|1864].
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1774 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	1775 end-to-end relationship is the use of digital signatures.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1776 .\" XXX (RFCs FIXME).
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1777 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	1778 the transmission.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1779 The TCP includes a checksum field therefore.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1780 These two approaches in combinations render the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1781 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1782 header field superfluous.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1783 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	1784 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	1785 .Hd Content-MD5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1786 header field.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1787 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	1788 Removing the support for this header field,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1789 removed the last place where MD5 computation was needed.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1790 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1791 Hence, the MD5 code could be removed as well.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1792 Over 500 lines of code vanished by this one change.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1793
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1794
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1795 .U3 "MMDF maildrop support
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1796 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1797 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	1798 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	1799 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	1800 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	1801 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	1802 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	1803 mbox became the only packed mailbox format supported in mmh.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1804 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1805 The simplifications within the code were moderate.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1806 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	1807 But also, switches of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1808 .Pn packf
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1809 and
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1810 .Pn rcvpack
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1811 could be removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1812 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1813 In the message parsing function
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1814 .Fn sbr/m_getfld.c ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1815 knowledge of MMDF packed mail boxes was removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1816 .Ci 684ec30d81e1223a282764452f4902ed4ad1c754
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1817 Further code structure simplifications may be possible there,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1818 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	1819 I have not worked on them yet because
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1820 .Fu m_getfld()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1821 is heavily optimized and thus dangerous to touch.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1822 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	1823 too high.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1824
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1825
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1826 .U3 "Prompter's Control Keys
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1827 .P
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1828 The program
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1829 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1830 queries the user to fill in a message form.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1831 When used by
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1832 .Pn comp
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1833 as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1834 .Cl "comp -editor prompter" ,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1835 the resulting behavior is similar to
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1836 .Pn mailx .
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	1837 Apparently,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1838 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1839 hadn't been touched lately.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1840 Otherwise it's hardly explainable why it
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1841 still offered the switches
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1842 .Sw -erase
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1843 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1844 and
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1845 .Sw -kill
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1846 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1847 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	1848 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	1849 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	1850 with the standard tool
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1851 .Pn stty .
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1852 The switches are removed now
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1853 .Ci 0bd9750710cdbab80cfb4036dd87af20afe1552f .
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1854
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1855
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1856 .U3 "Hardcopy Terminal Support
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1857 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1858 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	1859 hardcopy terminal.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1860 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	1861 .Ci b7764c4a6b71d37918a97594d866258f154017ca .
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1862 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1863 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	1864 program (\c
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1865 .Pn mhl )
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1866 and the terminal.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1867 In nmh, this could have been ensured statically with the
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1868 .Sw -nomoreproc
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1869 at the command line, too.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	1870 In mmh, setting the profile entry
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1871 .Pe Pager
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1872 or the environment variable
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1873 .Ev PAGER
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1874 to
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1875 .Pn cat
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1876 is sufficient.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1877
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1878
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1879
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1880
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1881 .H2 "Attachments
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	1882 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1883 The mind model of email attachments is unrelated to MIME.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1884 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	1885 requirements for having attachments, they do not mention the word
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1886 ``attachment''.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1887 Instead of attachments, MIME talks about ``multi-part message bodies''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1888 [RFC\\|2045], a more general concept.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1889 Multi-part messages are messages
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1890 ``in which one or more different
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1891 sets of data are combined in a single body''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1892 [RFC\\|2046].
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1893 MIME keeps its descriptions generic;
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1894 it does not imply specific usage models.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1895 One usage model became prevalent: attachments.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1896 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	1897 attached to it.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1898 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	1899 and parts of arbitrary type following.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1900 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1901 MH's MIME support is a direct implementation of the RFCs.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1902 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	1903 in MH's implementation.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1904 .\" XXX rewrite ``no idea''.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1905 As a result,
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1906 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	1907 But users don't need all the MIME features,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1908 they want convenient attachment handling.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1909
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1910
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1911 .U3 "Composing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1912 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1913 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	1914 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	1915 .Ci 7480dbc14bc90f2d872d434205c0784704213252
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1916 In the file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1917 .Fn docs/README-ATTACHMENTS ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1918 he described his motivation to do so as such:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1919 .QS
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1920 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	1921 handing [sic!], the interface to this functionality is pretty obtuse.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1922 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	1923 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1924 composition files!
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1925 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1926 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1927 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	1928 In the same document:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1929 .QS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1930 These changes simplify the task of managing attachments on draft files.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1931 They allow attachments to be added, listed, and deleted.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1932 MIME messages are automatically created when drafts with attachments
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1933 are sent.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1934 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1935 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1936 Unfortunately, the attachment system,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1937 like any new facilities in nmh,
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1938 was inactive by default.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1939 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1940 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	1941 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	1942 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	1943 .[
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1944 nmh-workers attachment proposal
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1945 .]
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1946 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	1947 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1948 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	1949 Instead of command line switches, the
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1950 .Pe Attachment-Header
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1951 profile entry is used to specify
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1952 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	1953 It is pre-defined to
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1954 .Hd Attach .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1955 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1956 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	1957 .VS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1958 To: bob
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1959 Subject: The file you wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1960 Attach: /path/to/the/file-bob-wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1961 --------
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1962 Here it is.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1963 VE
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1964 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	1965 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	1966 non-interactively with
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1967 .Pn anno :
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1968 .VS
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1969 anno -append -nodate -component Attach -text /path/to/attachment
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1970 VE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1971 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	1972 .Pn send .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1973 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	1974 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	1975 attachment headers.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1976 If the MIMEification fails, for instance because the file to attach
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1977 is not accessible, the original draft is not changed.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1978 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1979 The attachment system handles the forwarding of messages, too.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1980 If the attachment header value starts with a plus character (`+'),
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1981 like in
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1982 .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	1983 the given messages in the specified folder will be attached.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1984 This allowed to simplify
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1985 .Pn forw .
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1986 .Ci f41f04cf4ceca7355232cf7413e59afafccc9550
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1987 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1988 Closely related to attachments is non-ASCII text content,
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1989 because it requires MIME too.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1990 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	1991 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	1992 This was necessary whenever the draft contained non-ASCII characters.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1993 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	1994 Therefore, the
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1995 .Pe automimeproc
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1996 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	1997 automatically each time.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	1998 Unfortunately, this approach conflicted with attachment system
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1999 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	2000 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	2001 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	2002 WhatNow prompt and
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2003 .Pe automimeproc
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2004 must not be set in the profile.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2005 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	2006 not caught.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2007 All in all, the solution was complex and irritating.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2008 My patch from December 2010
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 nmh-workers attachment proposal
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2011 .]
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2012 would have simplified the situation.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2013 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2014 Mmh's current solution is even more elaborate.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2015 Any necessary MIMEification is done automatically.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2016 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	2017 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	2018 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	2019 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	2020 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	2021 .\" XXX REF ?
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2022 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	2023 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2024 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	2025 compositions directly, the full power of
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2026 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2027 can still be accessed.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2028 Given no attachment headers are included, the user can create
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2029 .Pn mhbuild
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2030 composition drafts like in nmh.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2031 Then, at the WhatNow prompt, he needs to invoke
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2032 .Cl "edit mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2033 to convert it to MIME.
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2034 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	2035 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	2036 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2037 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	2038 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	2039 This case was simplified.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2040
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2041
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2042 .U3 "MIME Type Guessing
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2043 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2044 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	2045 .Pn mhbuild
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2046 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	2047 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	2048 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	2049 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	2050 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	2051 partly intelligent work.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2052 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	2053 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	2054 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	2055 content.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2056 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	2057 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2058 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	2059 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	2060 for the common cases.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2061 Mmh implements this approach in the
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2062 .Pn print-mimetype
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2063 script.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2064 .Ci 4b5944268ea0da7bb30598a27857304758ea9b44
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2065 Using it is the default choice.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2066 .P
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2067 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	2068 .Pn file .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2069 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	2070 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	2071 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	2072 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	2073 It varies much.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2074 Nevertheless, modern versions of GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2075 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2076 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	2077 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	2078 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	2079 it solves the difficult problem well.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2080 On systems where GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2081 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2082 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	2083 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	2084 .Ci 3baec236a39c5c89a9bda8dbd988d643a21decc6
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2085 .VS
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2086 Mime-Type-Query: file -b --mime
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2087 VE
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2088 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2089 Other versions of
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2090 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2091 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	2092 The diversity among
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2093 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2094 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	2095 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2096 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	2097 `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	2098 `application/octet-stream'.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2099 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	2100 for a specific file.
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2101 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	2102 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	2103 I consider both cases impractical.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2104 The existing solution should be sufficient.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2105 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	2106 .Pn mhbuild
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2107 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	2108
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2109
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2110 .U3 "Storing Attachments
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2111 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2112 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	2113 .Pn mhstore .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2114 The program has two operation modes,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2115 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2116 and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2117 .Sw -noauto .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2118 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	2119 MIME part's meta information, if available.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2120 This naming information is usually available for modern attachments.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2121 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	2122 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2123 would have been specified.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2124 In the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2125 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2126 mode, the parts are processed according to rules, defined by
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2127 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2128 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2129 These rules define generic filename templates for storing
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2130 or commands to post-process the contents in arbitrary ways.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2131 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	2132 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	2133 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2134 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2135 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2136 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	2137 in contrast to the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2138 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2139 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2140 In mmh,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2141 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2142 is not dangerous anymore.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2143 Two changes were necessary:
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2144 .BU
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2145 Any directory path is removed from the proposed filename.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2146 Thus, the files are always stored in the expected directory.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2147 .Ci 41b6eadbcecf63c9a66aa5e582011987494abefb
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2148 .BU
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2149 Tar files are not extracted automatically any more.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2150 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	2151 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2152 .LP
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2153 Now, the outcome of mmh's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2154 .Cl "mhstore -auto
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2155 can be foreseen from the output of
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2156 .Cl "mhlist -verbose" .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2157 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2158 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2159 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2160 mode is seen to be more powerful but less convenient.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2161 On the other hand,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2162 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2163 is safe now and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2164 storing attachments under their original name is intuitive.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2165 Hence,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2166 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2167 serves better as the default option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2168 .Ci 3410b680416c49a7617491af38bc1929855a331d
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2169 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2170 Files are stored into the directory given by the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2171 .Pe Nmh-Storage
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2172 profile entry, if set, or
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2173 into the current working directory, otherwise.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2174 Storing to different directories is only possible with
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2175 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2176 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2177 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2178 Still, in both modes, existing files get overwritten silently.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2179 This can be considered a bug.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2180 Yet, each other behavior has its draw-backs, too.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2181 Refusing to replace files requires adding a
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2182 .Sw -force
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2183 option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2184 Users will likely need to invoke
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2185 .Pn mhstore
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2186 a second time with
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2187 .Sw -force .
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2188 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	2189 This requires interaction, which I like to avoid if possible.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2190 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	2191 For now, the behavior remains as it is.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2192 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2193 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	2194 .Pn mhstore 's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2195 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2196 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2197 Instead of storing message/rfc822 parts as files to disk,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2198 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	2199 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	2200 automatically reassembled beforehand.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2201 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	2202 anymore.
8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2203 Instead, information on how to retrieve them is output.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2204 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	2205 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2206 .\" 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	2207 .\" 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	2208 `application/octet-stream; type=tar' is not special anymore.
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2209 Automatically extracting such MIME parts had been the dangerous part
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2210 of the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2211 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2212 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2213 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2214
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2215
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2216
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2217 .U3 "Showing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2218 .P
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2219 The program
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2220 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2221 had been written to display MIME messages.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2222 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	2223 Nmh's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2224 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2225 handled each MIME part independently, presenting them separately
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2226 to the user.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2227 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	2228 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	2229 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	2230 plus possibly attachments.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2231 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	2232 information on how to display the individual parts.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2233 I adjusted
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2234 .Pn mhshow 's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2235 behavior to the modern view on the topic.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2236 .P
159 8b411125645d Corrections and improvements by Kate, Phil, Matou, Michi, Lydi. markus schnalke <meillo@marmaro.de> parents: 157 diff changeset	2237 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	2238 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2239 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	2240 and is no longer part of mmh.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2241 Although
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2242 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2243 was renamed to
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2244 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2245 in mmh, this section uses the name
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2246 .Pn mhshow ,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2247 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	2248 .\" XXX ref to other section
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2249 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2250 In mmh, the basic idea is that
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2251 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2252 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	2253 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2254 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2255 invokes a pager session for all its output,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2256 whenever it prints to a terminal.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2257 .Ci a4197ea6ffc5c1550e8b52d5a654bcaaaee04a4e
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2258 In consequence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2259 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2260 does no more invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2261 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2262 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2263 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2264 replacing the original
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2265 .Pn show ,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2266 output from
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2267 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2268 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	2269 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2270 Hence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2271 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2272 does not need to invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2273 The one and only job of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2274 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2275 is to format messages or parts of them.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2276 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	2277 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2278 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2279 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2280 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	2281 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	2282 to display them in the terminal.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2283 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	2284 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	2285 is ignored.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2286 It is simply treated as `multipart/mixed'.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2287 .Ci d0581ba306a7299113a346f9b4c46ce97bc4cef6
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2288 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	2289 .Sw -serialonly
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2290 switch of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2291 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2292 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	2293 the `%e' escape in
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2294 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2295 profile entries became useless and was thus removed.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2296 .Ci a20d405db09b7ccca74d3e8c57550883da49e1ae
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2297 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2298 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	2299 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	2300 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2301 profile entries before, if possible and wanted.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2302 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	2303 Other kinds of attachments are ignored.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2304 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2305 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2306 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	2307 the message.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2308 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	2309 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2310 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	2311 to the native charset.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2312 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2313 .Pe mhshow-charset-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2314 profile entries used to be needed.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2315 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	2316 text through the
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2317 .Pn iconv
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2318 command, if necessary.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2319 .Ci 2433122c20baccb10b70b49c04c6b0497b5b3b60
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2320 Custom
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2321 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2322 rules for textual content might need a
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2323 .Cl "iconv -f %c %f \|
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2324 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	2325 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2326 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	2327 has improved, it is not consistent enough.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2328 Further work needs to be done and
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2329 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	2330 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	2331 correctly without the need to configure anything.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2332
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 .ig
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2335
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2336 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2337 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	2338 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	2339 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	2340 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	2341 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	2342 it!
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2343 (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	2344 ~/.netrc are gone now.)
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2345 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2346
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2347 ..
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2348
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2349
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2350
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2351 .H2 "Signing and Encrypting
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	2352 .P
166 f102dcc06bb9 s/digital cryptography/signing and encryption/ markus schnalke <meillo@marmaro.de> parents: 165 diff changeset	2353 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	2354 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	2355 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	2356 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	2357 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	2358 out-of-the-box.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2359 Therefore, Neil Rickert's
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2360 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2361 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2362 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2363 scripts
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 neil rickert mhsign mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2366 .]
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2367 were included into mmh.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2368 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	2369 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	2370 Additionally, no licensing difficulties appeared,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2371 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	2372 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2373 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	2374 to the differences of mmh.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2375 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	2376 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	2377 .P
157 0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2378 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2379 handles the signing and encrypting part.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2380 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	2381 .Pn gnupg
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2382 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2383 the MH system.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2384 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	2385 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2386 does the job automatically.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2387 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	2388 If a draft contains the
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2389 .Hd Sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2390 header field,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2391 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2392 will sign it.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2393 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	2394 .Pe Pgpkey
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2395 profile entry.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2396 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2397 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	2398 but by manually invoking
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2399 .Pn mhsign ,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2400 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	2401 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	2402 .Hd Enc
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2403 header field.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2404 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	2405 from an overrides files, called
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2406 .Fn pgpkeys .
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2407 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	2408 .Pn send
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2409 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	2410 Currently, messages with hidden (BCC) recipients can not be encrypted.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2411 This corner-case requires a more complex solution.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2412 Covering it is left to do.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2413 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2414 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	2415 most recent features in mmh.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2416 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	2417 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	2418 It is worthwhile to consider adding
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2419 .Sw -[no]sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2420 and
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2421 .Sw -[no]enc
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2422 switches to
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2423 .Pn send ,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2424 to override the corresponding header fields.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2425 The profile entry:
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2426 .VS
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2427 send: -sign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2428 VE
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2429 .LP
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2430 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	2431 With the present approach, the line
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2432 .VS
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2433 Send:
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2434 VE
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2435 .LP
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2436 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	2437 Yet, the integration of
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2438 .Pn mhsign
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2439 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	2440 question now.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2441 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2442 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2443 is the contrary part to
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2444 .Pn mhsign .
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2445 It verifies signatures and decrypts messages.
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 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	2448 .P
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2449 The integration of
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2450 .Pn mhpgp
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2451 into
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2452 .Pn show ,
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2453 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	2454 is a task left open.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2455 .Pn show 's
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2456 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	2457 the existing code.
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2458 Extensive programming work is required. ... FIXME
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2459
0cce17978f0a Wrote about signing and encrypting. Not finished yet. markus schnalke <meillo@marmaro.de> parents: 155 diff changeset	2460
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2461
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2462
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2463
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2464 .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	2465 .P
14 55ec590cfa07 Wrote about the draft folder. markus schnalke <meillo@marmaro.de> parents: 12 diff changeset	2466
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2467 .U3 "Draft Folder
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2468 .Id draft-folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2469 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2470 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	2471 This is the file
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2472 .Fn draft
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2473 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	2474 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	2475 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	2476 the user had to decide among:
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2477 .BU
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2478 Using the old draft to finish and send it before starting with a new one.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2479 .BU
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2480 Discarding the old draft and replacing it with a new one.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2481 .BU
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2482 Preserving the old draft by refiling it to a folder.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2483 .P
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2484 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	2485 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	2486 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	2487 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	2488 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	2489 help anything.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2490 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2491 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	2492 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	2493 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	2494 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	2495 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	2496 out-of-the-box.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2497 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	2498 .Mp mh-draft (5)
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2499 to better document the feature.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2500 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2501 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	2502 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	2503 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	2504 complex cases.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2505 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	2506 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	2507 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	2508 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	2509 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	2510 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	2511 Tools do not need special switches to work on the draft message.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2512 Hence corner-cases were removed.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2513 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2514 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	2515 default name.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2516 I chose the name
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2517 .Fn +drafts
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2518 for obvious reasons.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2519 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	2520 .Sw -draftfolder
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2521 and
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2522 .Sw -draftmessage
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2523 could be removed.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2524 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	2525 new concept.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2526 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	2527 approaches.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2528 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	2529 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	2530 .Sw -draft
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2531 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	2532 special.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2533 It became indistinguishable to operating on any other message.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2534 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2535 .P
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2536 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	2537 .Ci 2d48b455c303a807041c35e4248955f8bec59eeb .
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2538 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	2539 Refiling drafts is without difference to refiling other messages.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2540 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	2541 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	2542 .Pn comp
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2543 still has
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2544 .Sw -[no]use
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2545 for switching between two modes:
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2546 .BU
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2547 .Sw -use
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2548 to modify an existing draft.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2549 .BU
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2550 .Sw -nouse
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2551 to compose a new draft, possibly taking some existing message as template.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2552 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2553 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	2554 .Pn comp
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2555 is deterministic.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2556 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2557 .Pn send
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2558 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	2559 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	2560 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	2561 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	2562 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	2563 .Pn send
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2564 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	2565 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2566 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	2567 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	2568 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	2569 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	2570 but applies them.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2571 .Cl "scan +drafts" ,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2572 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	2573 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	2574 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	2575 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	2576 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	2577 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	2578
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2579
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2580 .U3 "Trash Folder
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2581 .Id trash-folder
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2582 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2583 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	2584 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	2585 \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	2586 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	2587 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	2588 Although files remained in the file system,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2589 the messages were no longer visible in MH.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2590 To truly delete them, a maintenance job was needed.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2591 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	2592 For instance:
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2593 .VS
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2594 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	2595 VE
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2596 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	2597 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	2598 backup prefix from the file name.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2599 But the user could not rely on this statement.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2600 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	2601 message
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 became file
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2604 .Fn ,6 .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2605 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	2606 the number one above the highest existing message number.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2607 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	2608 .Fn 6
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2609 then.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2610 If this new message would be removed as well,
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2611 then the backup of the former message is overwritten.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2612 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	2613 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	2614 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	2615 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	2616 ``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	2617 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	2618 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	2619 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	2620 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	2621 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	2622 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	2623 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2624 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	2625 This complicates managing them.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2626 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	2627 .Pn find ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2628 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	2629 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	2630 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2631 The profile entry
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2632 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2633 (previously named
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2634 .Pe Delete-Prog )
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2635 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	2636 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	2637 the specified messages.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2638 This would override the default action described above.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2639 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	2640 Nmh's man page
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2641 .Mp rmm (1)
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2642 proposes to set the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2643 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2644 to
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2645 .Cl "refile +d
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2646 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	2647 .Fn +d ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2648 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	2649 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	2650 .Cl "rm `mhpath +d all`
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2651 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	2652 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2653 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	2654 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	2655 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	2656 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	2657 No backup files are silently overwritten.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2658 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	2659 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	2660 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	2661 .Pn refile
f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2662 can restore deleted messages.
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2663 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	2664 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	2665 .P
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2666 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	2667 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	2668 Hence,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2669 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2670 calls
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2671 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2672 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	2673 .Fn +trash
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2674 by default.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2675 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	2676 .Cl "rmm -unlink +trash a" ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2677 where the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2678 .Sw -unlink
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2679 switch causes the files to be unlinked.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2680 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2681 .Ci ca0b3e830b86700d9e5e31b1784de2bdcaf58fc5
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2682 .P
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2683 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	2684 simplified the code base.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2685 The relationship between
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2686 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2687 and
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2688 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2689 was inverted.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2690 In mmh,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2691 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2692 invokes
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2693 .Pn refile ,
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2694 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	2695 Yet, the relationship is simpler now.
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2696 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	2697 .Mp refile (1),
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	2698 can no longer occur:
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2699 .QS
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2700 Since
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2701 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2702 uses your
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 to delete the message, the
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2705 .Pe rmmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2706 must NOT call
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2707 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2708 without specifying
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2709 .Sw -normmproc
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2710 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	2711 .QE
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2712 .LP
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2713 .Pn rmm
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2714 either unlinks a message with
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2715 .Fu unlink()
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2716 or invokes
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 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	2719 .Pn refile
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2720 does not invoke any tools.
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2721 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2722 By generalizing the message removal in the way that it became covered
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2723 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	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
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2727
7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2728
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2729 .H2 "Modern Defaults
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2730 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2731 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	2732 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	2733 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	2734 with old versions.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2735 But what is the definition for old versions?
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2736 Still, the highly useful draft folder facility has not been activated
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2737 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	2738 .[
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2739 rose romine real work
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2740 .]
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2741 The community seems not to care.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2742 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	2743 a profile before they can access the modern features of nmh.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2744 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	2745 for modern emailing.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2746 The point is not the customization of the setup,
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2747 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	2748 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2749 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	2750 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	2751 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	2752 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	2753 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	2754 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	2755 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	2756 documentation.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2757 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	2758 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	2759 just work.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2760 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	2761 and I am a software developer,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2762 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	2763 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	2764 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	2765 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	2766 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	2767 before they truly used the system,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2768 although they had been motivated in the beginning.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2769 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	2770 we should spare them further inconveniences.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2771 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2772 Maintaining compatibility for its own sake is bad,
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2773 because the code base collects more and more compatibility code.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2774 Sticking to the compatiblity code means remaining limited;
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2775 whereas adjusting to the changes renders the compatibility unnecessary.
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2776 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	2777 gather bugs, by not being well tested.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2778 Also, the increased code size and the greater number of conditions
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2779 increase the maintenance costs.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2780 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	2781 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	2782 important.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2783 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	2784 Hence, compatibility is hardly important for technical reasons.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2785 Its importance originates rather from personal reasons.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2786 Nmh's user base is small and old.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2787 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	2788 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	2789 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	2790 new users are kept away.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2791 Yet, the future lies in new users.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2792 In consequence, mmh invites new users by providing a convenient
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2793 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	2794 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2795 In mmh, all modern features are active by default and many previous
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2796 approaches are removed or only accessible in manual ways.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2797 New default features include:
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2798 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2799 The attachment system (\c
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2800 .Hd Attach ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2801 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2802 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2803 The draft folder facility (\c
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2804 .Fn +drafts ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2805 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2806 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2807 The unseen sequence (`u')
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2808 .Ci c2360569e1d8d3678e294eb7c1354cb8bf7501c1
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2809 and the sequence negation prefix (`!').
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2810 .Ci db74c2bd004b2dc9bf8086a6d8bf773ac051f3cc
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2811 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2812 Quoting the original message in the reply.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2813 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2814 .BU
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2815 Forwarding messages using MIME.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2816 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2817 .P
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2818 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	2819 mail storage, is already convenient to use.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2820 Again, Paul Vixie's ``edginess'' call supports the direction I took:
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2821 ``the `main branch' should just be modern''.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2822 .[
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2823 paul vixie edginess nmh-workers
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2824 .]
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2825
133 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
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2829
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2830 .\" --------------------------------------------------------------
131 7c741bc8f719 Reorganized: Converted 4-parted discussion into 3-parted discussion. markus schnalke <meillo@marmaro.de> parents: 130 diff changeset	2831 .H1 "Styling
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	2832 .P
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2833 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	2834 preface of their book:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2835 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2836 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	2837 .], p. x]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2838 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2839 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	2840 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	2841 to cover it first.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2842 .QE
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2843 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	2844 to improve on style.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2845 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	2846 .[
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2847 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	2848 .]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2849
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2850
127 4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2851
4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2852
4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	2853 .H2 "Code Style
154 63e885fb48ba Converted some internal references to the new macros. markus schnalke <meillo@marmaro.de> parents: 145 diff changeset	2854 .Id code-style
118 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 .U3 "Indentation Style
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2857 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2858 Indentation styles are the holy cow of programmers.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2859 Kernighan and Pike
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2860 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2861 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	2862 .], p. 10]
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	2863 wrote:
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2864 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2865 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	2866 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	2867 application.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2868 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	2869 time arguing.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2870 .QE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2871 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2872 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	2873 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	2874 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	2875 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	2876 one tab, one level.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2877 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	2878 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	2879 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	2880 .Pn unexpand
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2881 or
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2882 .Pn entab
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2883 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	2884 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	2885 (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	2886 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	2887 Although reformatting existing code should be avoided, I did it.
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2888 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	2889 .Ci a485ed478abbd599d8c9aab48934e7a26733ecb1
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2890
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2891 .U3 "Comments
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2892 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2893 Section 1.6 of
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2894 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2895 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	2896 .], p. 23]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2897 demands: ``Don't belabor the obvious.''
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2898 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	2899 .VS
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2900 context_replace(curfolder, folder); /* update current folder */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2901 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	2902 seq_save(mp); /* synchronize message sequences */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2903 folder_free(mp); /* free folder/message structure */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2904 context_save(); /* save the context file */
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 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2907
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2908 int c; /* current character */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2909 char cp; / miscellaneous character pointer */
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 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2912
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2913 /* NUL-terminate the field */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2914 *cp = '\0';
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2915 VE
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2916 .Ci 426543622b377fc5d091455cba685e114b6df674
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2917 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2918 The program code explains enough itself, already.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2919
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2920
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2921 .U3 "Names
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2922 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2923 Kernighan and Pike suggest:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2924 ``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	2925 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2926 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	2927 .], p. 4]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2928 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	2929 .Fu check_charset()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2930 to
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2931 .Fu is_native_charset() .
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2932 .Ci 8d77b48284c58c135a6b2787e721597346ab056d
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2933 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	2934 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	2935 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	2936 of the charset name.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2937 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2938 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	2939 .VS
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2940 m_unknown(in); /* the MAGIC invocation... */
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2941 VE
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2942 Renaming the obscure
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2943 .Fu m_unknown()
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	2944 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	2945 .Ci 611d68d19204d7cbf5bd585391249cb5bafca846
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2946 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2947 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	2948 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	2949 ``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	2950 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2951 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	2952 .], p. 19]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2953 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	2954 to be scanned:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2955 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2956 #define SCN_MBOX (-1)
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2957 #define SCN_FOLD 0
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2958 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2959 .Ci 7ffb36d28e517a6f3a10272056fc127592ab1c19
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2960 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2961 The argument
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2962 .Ar outnum
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2963 of the function
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2964 .Fu scan()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2965 in
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2966 .Fn uip/scansbr.c
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2967 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	2968 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	2969 program logic.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2970 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	2971 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	2972 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2973 int incing = (outnum > 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2974 int ismbox = (outnum != 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2975 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2976 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	2977 The variable
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2978 .Ar outnum
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2979 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	2980 .Ci b8b075c77be7794f3ae9ff0e8cedb12b48fd139f
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2981 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	2982 of related code parts.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2983 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	2984 straight forward implementation became apparent.
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	2985 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	2986 .Ci aa60b0ab5e804f8befa890c0a6df0e3143ce0723
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2987
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2988
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2989
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2990 .H2 "Structural Rework
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	2991 .P
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2992 Although the stylistic changes described up to here improve the
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2993 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	2994 Structural changes affect a much larger area.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2995 They are more difficult to do but lead to larger improvements,
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	2996 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	2997 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2998 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	2999 Kernighan and Pike ask: ``But why worry about style?''
136 470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3000 Following are two examples of structural rework that show
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3001 why style is important in the first place.
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3002
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3003
470d5db0c06c Minor rework. markus schnalke <meillo@marmaro.de> parents: 134 diff changeset	3004 .U3 "Rework of \f(CWanno\fP
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3005 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3006 Until 2002,
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3007 .Pn anno
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3008 had six functional command line switches,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3009 .Sw -component
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3010 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3011 .Sw -text ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3012 which have an argument each,
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3013 and the two pairs of flags,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3014 .Sw -[no]date
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3015 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3016 .Sw -[no]inplace .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3017 Then Jon Steinhart introduced his attachment system.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3018 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	3019 .Pn anno .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3020 He added five more switches:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3021 .Sw -draft ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3022 .Sw -list ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3023 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3024 .Sw -append ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3025 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3026 .Sw -number ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3027 the last one taking an argument.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3028 .Ci 7480dbc14bc90f2d872d434205c0784704213252
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3029 Later,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3030 .Sw -[no]preserve
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3031 was added.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3032 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3033 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	3034 .Mp anno (1)
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3035 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3036 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3037 anno [+folder] [msgs] [-component field] [-inplace \| -noinplace]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3038 [-date \| -nodate] [-draft] [-append] [-list] [-delete]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3039 [-number [num\|all]] [-preserve \| -nopreserve] [-version]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3040 [-help] [-text body]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3041 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3042 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3043 The implementation followed the same structure.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3044 Problems became visible when
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3045 .Cl "anno -list -number 42
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3046 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	3047 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3048 .Cl "anno -list -number l:5
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3049 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	3050 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	3051 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	3052 There, the correct use of
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3053 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3054 was defined as being
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3055 .Cl "[-number [num\|all]]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3056 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	3057 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3058 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3059 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3060 The
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3061 .Sw -list
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3062 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	3063 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	3064 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	3065 .Sw -number
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3066 option is also used.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3067 .QE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3068 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3069 The problem was manifold.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3070 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	3071 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3072 switch.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3073 If it was missing or non-numeric,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3074 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3075 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	3076 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	3077 Semantically, the argument to the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3078 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3079 switch is only necessary in combination with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3080 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3081 but not with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3082 .Sw -list .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3083 In the former case it is even necessary.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3084 .P
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3085 Trying to fix these problems on the surface would not have solved it truly.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3086 The problems discovered originate from a discrepance between the semantic
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3087 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	3088 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	3089 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	3090 to the structure of the problem.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3091 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3092 In 2002, the new switches
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3093 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3094 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3095 .Sw -delete
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3096 were added in the same way, the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3097 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3098 switch for instance had been added.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3099 Yet, they are of structural different type.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3100 Semantically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3101 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3102 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3103 .Sw -delete
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3104 introduce modes of operation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3105 Historically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3106 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3107 had only one operation mode: adding header fields.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3108 With the extension, it got two moder modes:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3109 listing and deleting header fields.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3110 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	3111 fundamental change to
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3112 .Pn anno 's
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3113 behavior.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3114 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	3115 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	3116 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	3117 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3118 and its documentation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3119 .Ci d54c8db8bdf01e8381890f7729bc0ef4a055ea11
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3120 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3121 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	3122 The following code excerpt:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3123 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3124 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	3125 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	3126 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3127 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3128 delete = 0;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3129 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3130 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3131 list = 1;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3132 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3133 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3134 .LP
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3135 was replaced by:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3136 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3137 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	3138 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3139 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3140 mode = MODE_DEL;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3141 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3142 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3143 mode = MODE_LIST;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3144 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3145 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3146 .LP
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3147 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	3148 it is easier to understand as well.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3149 The same applies to the documentation.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3150 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	3151 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	3152 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3153 anno [+folder] [msgs] [-component field] [-text body]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3154 [-append] [-date \| -nodate] [-preserve \| -nopreserve]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3155 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3156
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3157 anno -delete [+folder] [msgs] [-component field] [-text
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3158 body] [-number num \| all ] [-preserve \| -nopreserve]
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
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3161 anno -list [+folder] [msgs] [-component field] [-number]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3162 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	3163 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3164 .\" 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	3165
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	3166
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	3167
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3168 .U3 "Path Conversion
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3169 .P
134 edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3170 Four kinds of path names can appear in MH:
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3171 .IP (1)
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3172 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	3173 .Fn /etc/passwd .
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3174 .IP (2)
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3175 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	3176 .Fn ./foo/bar .
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3177 .IP (3)
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3178 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	3179 .Fn +friends/phil .
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3180 .IP (4)
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3181 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	3182 .Fn @subfolder .
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3183 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3184 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	3185 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	3186 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	3187 .Fn @ ',
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3188 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	3189 .Fn . '.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3190 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3191 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	3192 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	3193 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	3194 .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	3195 (``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	3196 .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	3197 (``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	3198 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	3199 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	3200 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	3201 .VS
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3202 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	3203 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	3204 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	3205 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	3206 VE
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3207 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3208 My investigation provides the following description:
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3209 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3210 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	3211 .Fu path()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3212 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	3213 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	3214 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	3215 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	3216 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	3217 The result is a pointer to newly allocated memory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3218 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3219 .Fu pluspath()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3220 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	3221 .Fu path() ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3222 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	3223 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	3224 An empty string parameter causes a buffer overflow.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3225 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3226 .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	3227 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	3228 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	3229 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	3230 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	3231 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	3232 The result is a pointer to newly allocated memory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3233 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3234 .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	3235 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	3236 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	3237 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	3238 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	3239 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	3240 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	3241 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	3242 static memory.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3243 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3244 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	3245 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	3246 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	3247 .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	3248 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	3249 .Ar folder ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3250 though
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3251 .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	3252 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	3253 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3254 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	3255 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	3256 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	3257 \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	3258 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	3259 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	3260 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	3261 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	3262 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	3263 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	3264 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	3265 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	3266 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	3267 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	3268 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	3269 current message.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3270 .Ci cff0e16925e7edbd25b8b9d6d4fbdf03e0e60c01
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3271 Third, I created three new functions to replace the previous mess:
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3272 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3273 .Fu expandfol()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3274 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	3275 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	3276 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	3277 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	3278 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	3279 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3280 .Fu expanddir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3281 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	3282 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	3283 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	3284 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	3285 .BU
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3286 .Fu toabsdir()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3287 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	3288 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	3289 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	3290 path name.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3291 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	3292 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3293 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	3294 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	3295 same type.
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3296 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	3297 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	3298 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	3299 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	3300 .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	3301 .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	3302 is removed.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3303 .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	3304 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3305 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	3306 .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	3307 with
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3308 .Fu getdeffol()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3309 and
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3310 .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	3311 with
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3312 .Fu getcurfol() ,
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3313 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	3314 .Fu expandfol("@") .
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3315 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	3316 .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	3317 to
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3318 .Fn sbr/path.c .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3319 .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	3320 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3321 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	3322 .Fu etcpath()
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3323 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	3324 .Fn sbr/path.c ,
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3325 too
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3326 .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	3327 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	3328 .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	3329 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	3330 .P
edf46861132b Wrote about path conversion; Dropped the idea to write about scan listings markus schnalke <meillo@marmaro.de> parents: 133 diff changeset	3331 .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	3332 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	3333 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	3334 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	3335 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	3336 is introduced by an explaining comment.
133 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
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3339
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3340
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3341 .H2 "Profile Reading
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3342 .P
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3343 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	3344 MH tools read the profile right after starting up,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3345 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	3346 and similar settings that influence the whole setup.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3347 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	3348 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	3349 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3350 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	3351 Among them were
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3352 .Pn post /\c
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3353 .Pn spost ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3354 .Pn mhmail ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3355 and
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3356 .Pn slocal .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3357 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	3358 During the discussion on the nmh-workers mailing list,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3359 .[
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3360 nmh-workers levine post profile
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3361 .]
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3362 David Levine posted an explanation, quoting John Romine:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3363 .QS
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3364 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	3365 agrees and provides an example that convinces me:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3366 .QS
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3367 My take on this is that
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3368 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3369 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	3370 .Fn .mh_profile
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3371 (only front-end UI programs read the profile).
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3372 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3373 For example, there can be contexts where
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3374 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3375 is called by a helper program (like `\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3376 .Pn mhmail ')
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3377 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	3378 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	3379 .QP
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3380 My suggestion would be to have
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3381 .Pn send
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3382 pass a (hidden) `\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3383 .Sw -fileproc
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3384 .Ar proc '
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3385 option to
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3386 .Pn post
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3387 if needed.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3388 You could also
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3389 use an environment variable (I think
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3390 .Pn send /\c
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3391 .Pn whatnow
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3392 do this).
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3393 .QE
164 5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3394 I think that's the way to go.
5c01017be420 Reacted to suggestions by Aaron Mueller. markus schnalke <meillo@marmaro.de> parents: 159 diff changeset	3395 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	3396 not an environment variable.
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3397 .QE
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3398 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3399 To solve the problem of
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3400 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3401 not honoring the
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3402 .Pe fileproc
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3403 profile entry,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3404 the community roughly agreed that a switch
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3405 .Sw -fileproc
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3406 should be added to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3407 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3408 to be able to pass a different fileproc.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3409 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	3410 the problem; it only removes a single symptom.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3411 The problem is that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3412 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3413 does not behave as expected.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3414 But all programs should behave as expected.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3415 Clear and simple concepts are a precondition for this.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3416 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	3417 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3418 Yet, the problem has a further aspect.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3419 It mainly originates in
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3420 .Pn mhmail .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3421 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3422 was intended to be a replacement for
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3423 .Pn mailx
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3424 on systems with MH installations.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3425 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3426 should have been able to use just like
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3427 .Pn mailx ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3428 but sending the message via MH's
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3429 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3430 instead of
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3431 .Pn sendmail .
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3432 Using
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 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	3435 MH set up for himself or not.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3436 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3437 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	3438 if not done yet.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3439 As
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3440 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3441 used
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3442 .Pn post ,
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 could not read the profile neither.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3445 This is the reason why
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3446 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3447 does not read the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3448 This is the reason for the actual problem.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3449 It was not much of a problem because
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3450 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3451 was not intended to be used by users directly.
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 is the interactive front-end 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 .Pn send
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3456 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	3457 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3458 \(en an awkward solution.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3459 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3460 The important insight is that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3461 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3462 is no true MH tool.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3463 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	3464 MH tool.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3465 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	3466 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	3467 to instruct them reading a different profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3468 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3469 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	3470 in the session use it by exporting an environment variable.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3471 With this approach, no special cases would have been introduced,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3472 no surprises would have been caused.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3473 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	3474 generalized orthogonally to the whole MH toolchest.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3475 Then Rose's motivation behind the decision that
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3476 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3477 ignores the profile, as quoted by Jeffrey Honig,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3478 .[
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3479 nmh-workers post profile
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3480 .]
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3481 would have become possible:
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3482 .QS
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3483 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	3484 what the man page says.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3485 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	3486 .QE
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3487 .LP
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3488 Yet, I consider this explanation short-sighted.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3489 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	3490 based on two different profiles.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3491 Mapping such problems on the concepts of switching between different
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3492 profiles, solves them once for all.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3493 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3494 In mmh, the wish to have
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3495 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3496 as as replacement for
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3497 .Pn mailx
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3498 is considered obsolete.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3499 Mmh's
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 does no longer cover this use-case.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3502 Currently,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3503 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3504 is in a transition state.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3505 .Ci 32d4f9daaa70519be3072479232ff7be0500d009
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3506 It may become a front-end to
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3507 .Pn comp ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3508 which provides an interface more convenient in some cases.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3509 In this case,
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 become an ordinary MH tool, reading the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3512 If, however, this idea will not convince, then
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3513 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3514 will be removed.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3515 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3516 Every program in the mmh toolchest reads the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3517 The only exception is
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3518 .Pn slocal ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3519 which is not considered part of the mmh toolchest.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3520 This MDA is only distributed with mmh, currently.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3521 Mmh has no
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3522 .Pn post
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3523 program, but
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3524 .Pn spost ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3525 which now reads the profile.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3526 .Ci 3e017a7abbdf69bf0dff7a4073275961eda1ded8
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3527 With this change,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3528 .Pn send
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3529 and
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3530 .Pn spost
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3531 can be considered to be merged.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3532 .Pn spost
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	3533 is only invoked directly by the to-be-changed
138 cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3534 .Pn mhmail
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3535 implementation and by
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3536 .Pn rcvdist ,
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3537 which will require rework.
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3538 .P
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3539 The
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3540 .Fu context_foil()
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3541 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	3542 .Ci 68af8da96bea87a5541988870130b6209ce396f6
cc35686f359e Wrote about profile reading. markus schnalke <meillo@marmaro.de> parents: 136 diff changeset	3543 All mmh tools read the profile.
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3544
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3545
127 4a9a97d9d6b5 Exchanged the section titles `Style' and `Code Style'. markus schnalke <meillo@marmaro.de> parents: 126 diff changeset	3546
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3547 .H2 "Standard Libraries
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3548 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3549 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	3550 Hence, MH included own implementations of functions
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3551 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	3552 but were not back then.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3553 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	3554 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	3555 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	3556 can and should be dropped.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3557 Kernighan and Pike advise: ``Use standard libraries.''
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3558 .[ [
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3559 kernighan pike practice of programming
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3560 .], p. 196]
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3561 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	3562 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	3563 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3564 .Fu snprintf()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3565 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	3566 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	3567 In project's own implementation of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3568 .Fu snprintf()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3569 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	3570 standard library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3571 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3572 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	3573 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	3574 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	3575 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3576 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	3577 only half a dozen years.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3578 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	3579 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	3580 I have not suffered from their incompatibilities.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3581 I have not longed for standardization.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3582 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	3583 were well established already.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3584 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	3585 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	3586 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	3587 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	3588 heart from their own experience.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3589 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3590 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	3591 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	3592 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	3593 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	3594 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	3595 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	3596 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	3597 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	3598 .Ci 768b5edd9623b7238e12ec8dfc409b82a1ed9e2d
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3599 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3600 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3601 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	3602 .Fn libmh.a ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3603 which is located in the
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3604 .Fn sbr
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3605 (``subroutines'') directory in the source tree.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3606 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	3607 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	3608 and folder handling, but as well
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3609 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	3610 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	3611 functions of the standard library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3612 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3613 I have replaced the
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3614 .Fu atooi()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3615 function with calls to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3616 .Fu strtoul()
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	3617 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	3618 .Fu strtoul()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3619 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	3620 .Ci c490c51b3c0f8871b6953bd0c74551404f840a74
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3621 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3622 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	3623 .Fu memmove()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3624 and
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3625 .Fu strerror() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3626 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	3627 to support SunOS 4.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3628 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	3629 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	3630 put a load on mmh.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3631 .Ci b067ff5c465a5d243ce5a19e562085a9a1a97215
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3632 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3633 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3634 .Fu copy()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3635 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	3636 In contrast to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3637 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3638 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	3639 The code was adjusted to replace
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3640 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3641 with
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3642 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3643 except within
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3644 .Fu concat() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3645 where
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 more convenient.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3648 Therefore, the definition of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3649 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3650 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	3651 .Fu concat()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3652 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	3653 .Ci 552fd7253e5ee9e554c5c7a8248a6322aa4363bb
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3654 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3655 The function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3656 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3657 had been a generalized version of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3658 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3659 with minor differences.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3660 As all calls to
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 had the slash (`/') as delimiter anyway,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3663 replacing
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3664 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3665 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	3666 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3667 became desirable.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3668 Unfortunately, many of the 54 calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3669 .Fu r1bindex()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3670 depended on a special behavior,
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3671 which differed from the POSIX specification for
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3672 .Fu basename() .
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3673 Hence,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3674 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3675 was kept but renamed to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3676 .Fu mhbasename() ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3677 fixing the delimiter to the slash.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3678 .Ci 240013872c392fe644bd4f79382d9f5314b4ea60
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3679 For possible uses of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3680 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3681 with a different delimiter,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3682 the ANSI C function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3683 .Fu strrchr()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3684 provides the core functionality.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3685 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3686 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3687 .Fu ssequal()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3688 function \(en apparently for ``substring equal'' \(en
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3689 was renamed to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3690 .Fu isprefix() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3691 because this is what it actually checks.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3692 .Ci c20b4fa14515c7ab388ce35411d89a7a92300711
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3693 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	3694 .VS
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3695 /*
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3696 * THIS CODE DOES NOT WORK AS ADVERTISED.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3697 * 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	3698 * 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	3699 * 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	3700 * should be kept if it's sufficient.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3701 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3702
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 * 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	3705 * 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	3706 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3707 VE
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3708 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	3709 .Fu strncmp() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3710 .Ci b0b1dd37ff515578cf7cba51625189eb34a196cb
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	3711
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3712
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3713
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3714
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3715
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3716 .H2 "User Data Locations
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3717 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3718 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	3719 The profile is a file named
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3720 .Fn \&.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3721 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3722 It contains the static configuration.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3723 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	3724 .Pe Path .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3725 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	3726 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	3727 configuration files.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3728 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	3729 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	3730 .Fn Mail
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3731 in the home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3732 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3733 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	3734 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	3735 configuration file.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3736 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	3737 They are different kinds of data:
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3738 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	3739 tools operate.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3740 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	3741 is bad.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3742 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	3743 as well.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3744 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	3745 in the first place, I did it now.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3746 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3747 Personal mmh data is grouped by type, resulting in two distinct parts:
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3748 The mail storage and the configuration.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3749 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	3750 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	3751 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	3752 located there.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3753 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	3754 but his \fImail storage\fP.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3755 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	3756 .Fn Mail ,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3757 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3758 In mmh, the configuration is grouped together in
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3759 the hidden directory
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3760 .Fn \&.mmh
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3761 in the user's home directory.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3762 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	3763 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	3764 .Fn profile .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3765 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	3766 .Fn $HOME/.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3767 but to
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3768 .Fn $HOME/.mmh/profile .
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3769 Having both, the file
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3770 .Fn $HOME/.mh_profile
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3771 and the configuration directory
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3772 .Fn $HOME/.mmh
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3773 appeared to be inconsistent.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3774 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	3775 Unix users.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3776 .Ci 7030d7edb099bff36ded7548bb5380f7acab4f9b
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3777 .P
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3778 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	3779 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	3780 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	3781 personal MH setup.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3782 In nmh, the environment variable
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3783 .Ev MH
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3784 could be used to specifiy a different profile.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3785 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	3786 the
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3787 .Ev MHCONTEXT
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3788 environment variable could be used.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3789 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	3790 each terminal, for instance.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3791 In mmh, three environment variables are used.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3792 .Ev MMH
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3793 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	3794 .Fn .mmh ).
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3795 .Ev MMHP
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3796 and
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3797 .Ev MMHC
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3798 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	3799 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	3800 independently from the profile, context, and mail storage.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	3801 .Ci 7030d7edb099bff36ded7548bb5380f7acab4f9b
133 02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3802 .P
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3803 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	3804 The new approach has no functional disadvantages,
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3805 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	3806 possibly even easier with the new approach.
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3807 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	3808 between mail storage and configuration.
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
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3811
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3812
02660c14f6a8 Further re-ordering of the sections. markus schnalke <meillo@marmaro.de> parents: 131 diff changeset	3813
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3814 .H2 "Modularization
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3815 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3816 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	3817 .Fn uip
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3818 (``user interface programs'') directory.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3819 Each tools has a source file with the same name.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3820 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3821 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3822 is built from
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3823 .Fn uip/rmm.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3824 Some source files are used for multiple programs.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3825 For example
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3826 .Fn uip/scansbr.c
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3827 is used for both,
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3828 .Pn scan
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3829 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3830 .Pn inc .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3831 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	3832 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	3833 32 programs depended on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3834 17 programs depended on one source file only.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3835 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	3836 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	3837 18 programs depend on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3838 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	3839 (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	3840 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	3841 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3842 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	3843 increase the readability of its source code.
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3844 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	3845 With the exception of the MIME handling tools,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3846 .Pn pick
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3847 is the largest tools.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3848 It contains 1\\|037 lines of source code (measured with
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3849 .Pn sloccount ), excluding the MH library.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3850 Only the MIME handling tools (\c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3851 .Pn mhbuild ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3852 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3853 .Pn show ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3854 etc.)
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3855 are larger.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3856 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	3857 source files seldom leads to better readability.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3858 For such tools, splitting makes sense
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3859 when parts of the code are reused in other programs,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3860 and the reused code fragment is not general enough
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3861 for including it in the MH library,
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3862 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	3863 .Fn uip/packsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3864 for instance, provides the core program logic for the
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3865 .Pn packf
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3866 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3867 .Pn rcvpack
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3868 programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3869 .Fn uip/packf.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3870 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3871 .Fn uip/rcvpack.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3872 mainly wrap the core function appropriately.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3873 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	3874 As another example,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3875 .Fn uip/termsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3876 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	3877 curses library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3878 Including
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3879 .Fn uip/termsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3880 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	3881 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	3882 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3883 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	3884 into multiple source files improves the readability.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3885 The program
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3886 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3887 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	3888 lines of code in summary.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3889 The main code file
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3890 .Fn uip/mhstore.c
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3891 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	3892 other MIME handling tools.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3893 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	3894 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	3895 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	3896 .P
169 f4ffe121a0a2 Applied excellent suggestions and corrections by Kate. markus schnalke <meillo@marmaro.de> parents: 168 diff changeset	3897 The work already accomplished focussed on the non-MIME tools.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3898 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	3899 This eases the understanding of the code base.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3900 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3901 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3902 was built from six source files:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3903 .Fn comp.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3904 .Fn whatnowproc.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3905 .Fn whatnowsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3906 .Fn sendsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3907 .Fn annosbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3908 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3909 .Fn distsbr.c .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3910 In mmh, it builds from only two:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3911 .Fn comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3912 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3913 .Fn whatnowproc.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3914 In nmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3915 .Pn comp ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3916 the core function of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3917 .Pn whatnow ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3918 .Pn send ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3919 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3920 .Pn anno
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3921 were compiled into
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3922 .Pn comp .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3923 This saved the need to execute these programs with
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3924 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3925 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3926 .Fu exec() ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3927 two expensive system calls.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3928 Whereis this approach improved the time performance,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3929 it interweaved the source code.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3930 Core functionalities were not encapsulated into programs but into
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3931 function, which were then wrapped by programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3932 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3933 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3934 included the function
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3935 .Fu annotate() .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3936 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	3937 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3938 and called
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3939 .Fu annotate() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3940 Because the function
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3941 .Fu annotate()
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3942 was used like the tool
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3943 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3944 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	3945 When another pair of command line switches was added to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3946 .Pn anno ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3947 a rather ugly hack was implemented to avoid adding another parameter
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3948 to the function.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3949 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3950 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3951 Separation simplifies the understanding of program code
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3952 because the area influenced by any particular statement is smaller.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3953 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	3954 on the function level.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3955 In mmh, the relevant code of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3956 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3957 comprises the two files
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3958 .Fn uip/comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3959 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3960 .Fn uip/whatnowproc.c ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3961 together 210 lines of code.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3962 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3963 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3964 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	3965 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	3966 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3967 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	3968 parts were used.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3969 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3970 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	3971 I learned about the easy and the difficult parts.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3972 Code is easy to understand if:
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3973 .BU
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	3974 The influenced code area is small.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3975 .BU
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	3976 The boundaries are strictly defined.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3977 .BU
139 b7b81ae9c9d8 Removed and moved some paragraphs. markus schnalke <meillo@marmaro.de> parents: 138 diff changeset	3978 The code is written straight-forward.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3979 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3980 .\" XXX move this paragraph somewhere else?
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3981 Reading
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3982 .Pn rmm 's
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3983 source code in
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3984 .Fn uip/rmm.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3985 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	3986 The reasons are that the task of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3987 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3988 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	3989 yet its source includes code constructs typical for MH tools.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3990 With the introduction of the trash folder in mmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3991 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3992 became a bit more complex, because it invokes
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3993 .Pn refile .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3994 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	3995 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3996 Understanding
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3997 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3998 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	3999 Due to the aforementioned hack in
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4000 .Pn anno
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4001 to save the additional parameter, information passed through the program's
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4002 source base in obscure ways.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4003 Thus, understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4004 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4005 required understanding the inner workings of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4006 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4007 first.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4008 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	4009 to be examined.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4010 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	4011 have avoided obscure programming techniques.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4012 By separating the tools on the program-level, the boundaries are
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4013 clearly visible and technically enforced.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4014 The interfaces are calls to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4015 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4016 rather than arbitrary function calls.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4017 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4018 But the real problem is another:
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4019 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	4020 Understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4021 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4022 requires understanding
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4023 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4024 and
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4025 .Fn uip/sendsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4026 because
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4027 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4028 does annotate and send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4029 In nmh, there surely exists the tool
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4030 .Pn send ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4031 which does (almost) only send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4032 But
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4033 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4034 and
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4035 .Pn repl
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4036 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4037 .Pn forw
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4038 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4039 .Pn dist
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4040 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4041 .Pn whatnow
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4042 and
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4043 .Pn viamail ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4044 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	4045 In result,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4046 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4047 sends messages without using
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4048 .Pn send .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4049 The situation is the same as if
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4050 .Pn grep
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4051 would page without
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4052 .Pn more
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4053 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	4054 .P
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4055 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	4056 is violated on the level below.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4057 This violation is for the sake of time performance.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4058 On systems where
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4059 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4060 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4061 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4062 are expensive, the quicker response might be noticable.
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	4063 In the old times, sacrificing readability and conceptional beauty for
3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	4064 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	4065 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	4066 No longer should we sacrifice readability or conceptional beauty.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4067 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	4068 guideline.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4069 No longer should we keep speed improvements that became unnecessary.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4070 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4071 Therefore, mmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4072 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4073 does no longer send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4074 In mmh, different jobs are divided among separate programs that
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	4075 invoke each other as needed.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4076 In consequence,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4077 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4078 invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4079 .Pn whatnow
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4080 which thereafter invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4081 .Pn send .
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4082 .Ci 3df5ab3c116e6d4a2fb4bb5cc9dfc5f781825815
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4083 .Ci c73c00bfccd22ec77e9593f47462aeca4a8cd9c0
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4084 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	4085 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	4086 annotations, for example, are made by invoking
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4087 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4088 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	4089 .Ci 469a4163c2a1a43731d412eaa5d9cae7d670c48b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4090 .Ci aed384169af5204b8002d06e7a22f89197963d2d
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4091 .Ci 3caf9e298a8861729ca8b8a84f57022b6f3ea742
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4092 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	4093 the decrease of
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4094 .Fn uip/*sbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4095 files confirm the improvement.
168 277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4096 .Ci 9e6d91313f01c96b4058d6bf419a8ca9a207bc33
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4097 .ci 81744a46ac9f845d6c2b9908074d269275178d2e
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4098 .Ci f0f858069d21111f0dbea510044593f89c9b0829
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4099 .Ci 0503a6e9be34f24858b55b555a5c948182b9f24b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4100 .Ci 27826f9353e0f0b04590b7d0f8f83e60462b90f0
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4101 .Ci d1da1f94ce62160aebb30df4063ccbc53768656b
277eeb5ba223 Applied suggestions by Lydi. markus schnalke <meillo@marmaro.de> parents: 166 diff changeset	4102 .Ci c42222869e318fff5dec395eca3e776db3075455
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4103 .P
145 3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4104 .\" XXX move this paragraph up somewhere
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4105 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	4106 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	4107 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	4108 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	4109 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	4110 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	4111 These errors will not be detected at compile time but at run time.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4112 Installing regression tests is a task left to do.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	4113 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	4114 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	4115
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4116
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4117 .ig
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4118 XXX consider writing about mhl vs. mhlproc
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4119
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4120 sbr/showfile.c
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4121
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4122 23 /*
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4123 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	4124 25 ** then really invoked the mhlproc instead
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4125 26 ** (which is usually mhl anyway).
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4126 27 */
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4127
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4128 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	4129
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4130 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	4131 (Actually, user should use "lproc: show", "showproc: mhl".)
3361e53dfcd6 Added comments and a source quote. markus schnalke <meillo@marmaro.de> parents: 139 diff changeset	4132 ..

Mercurial > docs > master

annotate discussion.roff @ 170:97461b0b34d2