docs/master: discussion.roff annotate

annotate discussion.roff @ 124:3d30fd938aa9

Spellchecking.

author	markus schnalke <meillo@marmaro.de>
date	Sat, 30 Jun 2012 15:05:06 +0200
parents	740f4128dea7
children	0e102cec0c73

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
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3 This main chapter discusses the practical work done in the mmh project.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	4 It is structured along the goals to achieve.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	5 The concrete work done
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	6 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	7 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	8 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	9 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	10 .\" 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	11
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
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	14 .H1 "Stream-Lining
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	15
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	16 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	17 MH had been considered an all-in-one system for mail handling.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	18 The community around nmh has a similar understanding.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	19 In fundamental difference, mmh shall be a MUA only.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	20 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	21 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	22 Such a project won't be able to excel in all aspects.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	23 Instead, the aspects of email should be covered my multiple projects,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	24 which then can be combined to form a complete system.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	25 Excellent implementations for the various aspects of email exist already.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	26 Just to name three examples: Postfix is a specialized MTA,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	27 Procmail is a specialized MDA, and Fetchmail is a specialized MRA.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	28 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	29 providing the same function again as a side-component in the project.
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	30 .P
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	31 Doing something well, requires to focus on a small set of specific aspects.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	32 Under the assumption that focused development produces better results
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	33 in the particular area, specialized projects will be superior
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	34 in their field of focus.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	35 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	36 or modular \(en will never be the best choice in any of the fields.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	37 Even in providing the best consistent all-in-one system they are likely
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	38 to be beaten by projects that focus only on integrating existing mail
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	39 components to a homogeneous system.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	40 .P
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	41 The limiting resource in Free Software community development
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	42 is usually man power.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	43 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	44 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	45 various fields.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	46 The concrete situation for MH-based mail systems is even tougher,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	47 given the small and aged community, including both developers and users,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	48 it has.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	49 .P
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	50 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	51 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	52 This is clearly the user interface \(en the MUA.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	53 Peripheral parts should be removed to stream-line 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	54
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	55
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	56 .H2 "Mail Transfer Facilities
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	57 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	58 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	59 agents, mmh is a MUA only.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	60 This general difference initiated the development of mmh.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	61 Removing the mail transfer facilities had been the first work task
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	62 in the mmh project.
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	63 .P
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	64 Focusing on one mail agent role only is motivated by Eric Allman's
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	65 experience with Sendmail.
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	66 He identified limiting Sendmail the MTA task had be one reason for
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	67 its success:
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	68 .[ [
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	69 costales sendmail
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	70 .], p. xviii]
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	71 .QS
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	72 Second, I limited myself to the routing function \(en
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	73 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	74 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	75 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	76 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	77 .QE
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	78 .P
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	79 In mmh, the Mail Submission Agent (MSA) is called
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	80 \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	81 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	82 .Pn post
9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	83 command, established network connections and spoke SMTP to submit
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	84 messages for relay to the outside world.
105 9ff356d84c57 Added reference to Allman to the text; added missing reference to ML. markus schnalke <meillo@marmaro.de> parents: 104 diff changeset	85 The changes in email demanded changes in this part of nmh too.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	86 Encryption and authentication for network connections
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	87 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	88 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	89 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	90 mail transfer requires development power and specialists.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	91 In mmh this whole facility was simply cut off.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	92 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	93 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	94 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	95 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	96 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	97 .Pn sendmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	98 command, which almost any MSA provides.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	99 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	100 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	101 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	102 over to the MSA.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	103 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	104 .VS
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	105 #!/bin/sh
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	106 # ignore command line arguments
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	107 exec qmail-inject
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	108 VE
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	109 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	110 is likely to be removed in the future.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	111 Then mmh would give the recipient addresses as command line arguments.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	112 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	113 .\" XXX implement it
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	114 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	115 To retrieve mail, the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	116 .Pn inc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	117 command acted as Mail Retrieval Agent (MRA).
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	118 It established network connections
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	119 and spoke POP3 to retrieve mail from remote servers.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	120 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	121 authentication, thus TLS and SASL were added.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	122 Support for message retrieval through IMAP will become necessary
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	123 to be added soon, too, and likewise for any other changes in mail transfer.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	124 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	125 from remote locations.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	126 .Ci ab7b48411962d26439f92f35ed084d3d6275459c
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	127 Instead, it depends on an external tool to cover this task.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	128 In mmh exist two paths for messages to enter mmh's mail storage:
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	129 (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	130 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	131 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	132 .Pn rcvstore
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	133 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	134 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	135 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	136 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	137 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	138 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	139 an external MRA is required to retrieve mail from remote machines.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	140 There exist excellent implementations of such software,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	141 which do this specific task likely better than the internal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	142 versions had done it.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	143 Also, 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	144 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	145 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	146 why not keep the internal version for convenience?
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	147 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	148 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	149 .Pn more
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	150 or
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	151 .Pn less
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	152 aren't available, appears to be ridiculous.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	153 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	154 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	155 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	156 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	157 mcilroy unix phil
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	158 p. 53
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	159 .]
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 bstj foreword
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	162 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	163 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	164 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	165 In other words:
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	166 ``Develop projects that focus on one thing and do it well.''
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	167 Projects grown complex should be split for the same reasons programs grown
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	168 complex should be split.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	169 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	170 separate projects then they should be separated.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	171 This is the case here, in my opinion.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	172 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	173 mail handling tasks.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	174 .[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	175 rfc 821
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	176 .]
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	177 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	178 .P
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	179 In the beginning, email had been small and simple.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	180 At that time,
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	181 .Pn /bin/mail
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	182 had covered anything there was to email and still had been small
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	183 and simple.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	184 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	185 (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	186 .[[
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	187 brooks no silver bullet
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	188 .]])
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	189 Email systems reacted to this change: They grew.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	190 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	191 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	192 As the mail systems grew even more, parts were split off.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	193 In nmh, for instance, the POP server, which was included in the original
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	194 MH, was removed.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	195 Now is the time to go one step further and split the MSA and MRA off, too.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	196 Not only does this decrease the code size of the project,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	197 but, more important, it unburdens mmh of the whole field of
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	198 message transfer with all its implications for the project.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	199 There is no more need to concern with changes in network transfer.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	200 This independence is received by depending on an external program
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	201 that covers the field.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	202 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	203 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	204 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	205 .BU
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	206 Implementing the function originally in the project.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	207 .BU
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	208 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	209 .BU
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	210 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	211 .P
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	212 Whereas adding the function originally to the project increases the
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	213 code size most and requires most maintenance and development work,
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	214 it makes the project most independent of other software.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	215 Using libraries or external programs require less maintenance work
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	216 but introduces dependencies on external software.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	217 Programs have the smallest interfaces and provide the best separation
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	218 but possibly limit the information exchange.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	219 External libraries are stronger connected than external programs,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	220 thus information can be exchanged more flexible.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	221 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	222 .\" XXX ref
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	223 Implementing complex functions originally in the project adds
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	224 a lot of code.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	225 This should be avoided if possible.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	226 Hence, the dependencies only change in kind, not in their existence.
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	227 In mmh, library dependencies on
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	228 .Pn libsasl2
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	229 and
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	230 .Pn libcrypto /\c
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	231 .Pn libssl
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	232 were treated against program dependencies on an MSA and an MRA.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	233 This also meant treating build-time dependencies against run-time
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	234 dependencies.
66 4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	235 Besides program dependencies providing the stronger separation
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	236 and being more flexible, they also allowed
4c9f4d05d90e Rework and extension of text from yesterday. markus schnalke <meillo@marmaro.de> parents: 63 diff changeset	237 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	238 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	239 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	240 losing functionality is a convincing argument.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	241 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	242 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	243 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	244 Users of MH should not have problems to set 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	245 Also, the popular MSAs and MRAs have large communities and a lot
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	246 of documentation available.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	247 Choices for MSAs range from full-featured MTAs like
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	248 .I Postfix
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	249 over mid-size MTAs like
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	250 .I masqmail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	251 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	252 .I dma
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	253 to small forwarders like
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	254 .I ssmtp
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	255 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	256 .I nullmailer .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	257 Choices for MRAs include
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	258 .I fetchmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	259 .I getmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	260 .I mpop
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	261 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	262 .I fdm .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	263
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	264
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	265 .H2 "Non-MUA Tools
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	266 .P
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	267 One goal of mmh is to remove the tools that are not part of the MUA's task.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	268 Further more, any tools that don't improve the MUA's job significantly
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	269 should be removed.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	270 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	271 They require maintenance work without adding much to the core task.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	272 By removing these tools, the project shall become more stream-lined
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	273 and focused.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	274 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	275 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	276 .Pn conflict
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	277 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	278 .Ci 8b235097cbd11d728c07b966cf131aa7133ce5a9
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	279 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	280 It even checked
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	281 .Fn /etc/passwd
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	282 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	283 .Fn /etc/group
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	284 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	285 A tool like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	286 .Pn conflict
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	287 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	288 .\" XXX historic reasons?
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	289 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	290 .Pn rcvtty
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	291 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	292 .Ci 14767c94b3827be7c867196467ed7aea5f6f49b0
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	293 because its use case of writing to the user's terminal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	294 on receiving of mail is obsolete.
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	295 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	296 .Ev MAILPATH
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	297 variable or graphical notifications are technically more appealing.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	298 Writing directly to terminals is hardly ever wanted today.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	299 If though one wants to have it this way, the standard tool
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	300 .Pn write
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	301 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	302 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	303 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	304 VE
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	305 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	306 .Pn viamail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	307 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	308 .Ci eda72d6a7a7c20ff123043fb7f19c509ea01f932
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	309 when the new attachment system was activated, because
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	310 .Pn forw
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	311 could then cover the task itself.
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	312 The program
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	313 .Pn sendfiles
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	314 was rewritten as a shell script wrapper around
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	315 .Pn forw .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	316 .Ci 0e82199cf3c991a173e0ac8aa776efdb3ded61e6
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	317 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	318 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	319 was removed
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	320 .Ci bb9360ead7eb7a3fedcce2eeedfc660014e41dbe ,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	321 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	322 A call to
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	323 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	324 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	325 .VS
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	326 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	327 VE
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	328 It did distinguish between old and new mail, but
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	329 this detail information can be retrieved with
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	330 .Pn stat (1),
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	331 too.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	332 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	333 in a similar way, if truly necessary.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	334 As mmh's
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	335 .Pn inc
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	336 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	337 and thus no data transfers over slow networks are involved,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	338 there's 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	339 .BU
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	340 .Pn msh
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	341 was removed
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	342 .Ci 916690191222433a6923a4be54b0d8f6ac01bd02
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	343 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	344 It provided an interactive shell to access the features of MH,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	345 but it wasn't just a shell, tailored to the needs of mail handling.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	346 Instead it was one large program that had several MH tools built in.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	347 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	348 .Pn msh 's
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	349 main use case had been accessing Bulletin Boards, which have seized to
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	350 be popular.
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	351 .P
24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	352 Removing
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	353 .Pn msh ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	354 together with the truly archaic code relicts
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	355 .Pn vmh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	356 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	357 .Pn wmh ,
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	358 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	359 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	360 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	361 for the same functionality is an advantage.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	362 Less code means less bugs and less maintenance work.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	363 As
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	364 .Pn rcvtty
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	365 and
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	366 .Pn msgchk
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	367 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	368 why should one keep them?
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	369 Removing them stream-lines mmh.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	370 .Pn viamail 's
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	371 use case is now partly obsolete and partly covered by
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	372 .Pn forw ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	373 hence there's no reason to still maintain it.
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	374 .Pn conflict
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	375 is not related to the mail client, and
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	376 .Pn msh
abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	377 conflicts with the basic concept of MH.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	378 Theses 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	379 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	380 Finally, there's
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	381 .Pn slocal .
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	382 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	383 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	384 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	385 the idea that mmh is a MUA only.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	386 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	387 should rather become a separate project.
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	388 However,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	389 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	390 provides rule-based processing of messages, like filing them into
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	391 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	392 Although
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	393 .Pn slocal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	394 does neither pull in dependencies nor does it include a separate
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	395 technical area (cf. Sec. XXX), still,
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	396 it 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	397 As
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	398 .Pn slocal
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	399 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	400 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	401 .Pn slocal .
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	402 For anyone not using MH,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	403 .Pn slocal
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	404 would become yet another independent MDA, like
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	405 .I procmail .
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	406 Then
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	407 .Pn slocal
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	408 could be installed without the complete MH system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	409 Likewise, mmh users could decide to use
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	410 .I procmail
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	411 without having a second, unused MDA,
7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	412 .Pn slocal ,
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	413 installed.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	414 That appears to be conceptionally the best solution.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	415 Yet,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	416 .Pn slocal
87 7d5b180de542 All kinds of rework plus new refs. markus schnalke <meillo@marmaro.de> parents: 85 diff changeset	417 is not split off.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	418 I defer the decision over
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	419 .Pn slocal
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	420 in need for deeper investigation.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	421 In the meanwhile, it remains part of mmh.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	422 That does not hurt because
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	423 .Pn slocal
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	424 is unrelated to the rest of the project.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	425
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	426
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	427 .H2 "\fLshow\fP and \fPmhshow\fP
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	428 .P
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	429 Since the very beginning \(en already in the first concept paper \(en
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	430 .Pn show
62 24aabbfe5794 Minor rework of larger text areas. markus schnalke <meillo@marmaro.de> parents: 60 diff changeset	431 had been MH's message display program.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	432 .Pn show
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	433 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	434 .Pn mhl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	435 to have the files formatted.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	436 With MIME, this approach wasn't sufficient anymore.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	437 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	438 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	439 foreign charsets.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	440 .Pn show 's
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	441 understanding of messages and
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	442 .Pn mhl 's
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	443 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	444 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	445 Instead of extending these tools, additional tools were written from
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	446 scratch and added to the MH tool chest.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	447 Doing so is encouraged by the tool chest approach.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	448 Modular design is a great advantage for extending a system,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	449 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	450 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	451 .Pn mhn .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	452 The command
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	453 .Cl "mhn -show 42
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	454 would show the MIME message numbered 42.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	455 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	456 the split of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	457 .Pn mhn
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	458 into a set of specialized tools, which together covered the
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	459 multiple aspects of MIME.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	460 One of them was
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	461 .Pn mhshow ,
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	462 which replaced
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	463 .Cl "mhn -show" .
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	464 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	465 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	466 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	467 .Pn show
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	468 and
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	469 .Pn mhshow .
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	470 To ease the life of users,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	471 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	472 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	473 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	474 if displaying the message would be beyond
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	475 .Pn show 's
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	476 abilities.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	477 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	478 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	479 (possibly through
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	480 .Pn next
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	481 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	482 .Pn prev )
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	483 and get the message printed with either
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	484 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	485 or
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	486 .Pn mhshow ,
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	487 whatever was more appropriate.
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	488 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	489 Having two similar tools for essentially the same task is redundant.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	490 Usually,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	491 users wouldn't distinguish between
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	492 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	493 and
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	494 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	495 in their daily mail reading.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	496 Having two separate display programs was therefore mainly unnecessary
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	497 from a user's point of view.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	498 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	499 to ensure that the programs behaved in a similar way,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	500 because they were used like a single tool.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	501 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	502 .P
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	503 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	504 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	505 As
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	506 .Pn mhshow
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	507 had already be 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	508 to drop
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	509 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	510 in favor of using
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	511 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	512 exclusively.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	513 .Ci 4c1efddfd499300c7e74263e57d8aa137e84c853
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	514 Removing
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	515 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	516 is no loss in function, because functionally
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	517 .Pn mhshow
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	518 covers it completely.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	519 The old behavior of
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	520 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	521 can still be emulated with the simple command line:
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	522 .VS
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	523 mhl `mhpath c`
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	524 VE
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	525 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	526 For convenience,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	527 .Pn mhshow
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	528 was renamed to
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 after
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	531 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	532 was gone.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	533 It is clear that such a rename may confuse future developers when
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	534 trying to understand the history.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	535 Nevertheless, I consider the convenience on the user's side,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	536 to call
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	537 .Pn show
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	538 when they want a message to be displayed, to outweigh the inconvenience
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	539 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	540 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	541 To prepare for the transition,
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	542 .Pn mhshow
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	543 was reworked to behave more like
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	544 .Pn show
f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	545 first.
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	546 (cf. Sec. XXX)
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	547 Once the tools behaved more alike, the replacing appeared to be
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	548 even more natural.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	549 Today, mmh's new
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	550 .Pn show
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	551 became the one single message display program again, with the difference
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	552 that today it handles MIME messages as well as non-MIME messages.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	553 The outcome of the transition is one program less to maintain,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	554 no second display program for users to deal with,
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	555 and less system complexity.
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	556 .P
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	557 Still, removing the old
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	558 .Pn show
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	559 hurts in one regard: It had been such a simple program.
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	560 Its lean elegance is missing to the new
69 f80ced4e749b Wrote more about the show-mhshow merge. markus schnalke <meillo@marmaro.de> parents: 66 diff changeset	561 .Pn show .
88 30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	562 But there is no chance;
30830e3b9e98 Further rework. markus schnalke <meillo@marmaro.de> parents: 87 diff changeset	563 supporting MIME demands for higher essential complexity.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	564
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	565
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	566 .H2 "Configure Options
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	567 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	568 Customization is a double-edged sword.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	569 It allows better suiting setups, but not for free.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	570 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	571 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	572 more possible setups and especially corner-cases.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	573 And, there is the cost of choice itself.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	574 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	575 Less tested code affects both, users and developers.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	576 The problem of choice affects the users, for once by having to
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	577 choose, but also by more complex interfaces that require more documentation.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	578 Whenever options add little advantages, they should be considered for
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	579 removal.
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	580 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	581 fifteen to three.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	582
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	583 .U3 "Mail Transfer Facilities
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	584 .P
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	585 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	586 options vanished:
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	587 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	588 The switches
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	589 .Sw --with-tls
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	590 and
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	591 .Sw --with-cyrus-sasl
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	592 had activated the support for transfer encryption and authentication.
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	593 This is not needed anymore.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	594 .Ci fecd5d34f65597a4dfa16aeabea7d74b191532c3
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	595 .Ci 156d35f6425bea4c1ed3c4c79783dc613379c65b
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	596 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	597 The configure switch
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	598 .Sw --enable-pop
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	599 activated the message retrieval facility.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	600 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	601 support had been small.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	602 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	603 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	604 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	605 The changes in the code base could hardly be overviewed.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	606 By having POP support togglable a second code base had been created,
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	607 one that needed to be tested.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	608 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	609 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	610 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	611 of the original program.
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	612 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	613 .P
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	614 Two other options only specified default configuration values:
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	615 .Sw --with-mts
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	616 defined the default transport service, either
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	617 .Ar smtp
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	618 or
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	619 .Ar sendmail .
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	620 In mmh this fixed to
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	621 .Ar sendmail .
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	622 .Ci f6aa95b724fd8c791164abe7ee5468bf5c34f226
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	623 With
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	624 .Sw --with-smtpservers
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	625 default SMTP servers for the
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	626 .Ar smtp
fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	627 transport service could be specified.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	628 .Ci 128545e06224233b7e91fc4c83f8830252fe16c9
85 fb0d1b4c8fb1 Extended the text about mail transfer configure options. markus schnalke <meillo@marmaro.de> parents: 84 diff changeset	629 Both of them became irrelevant.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	630
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	631 .U3 "Backup Prefix
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	632 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	633 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	634 filenames to tag them as deleted.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	635 By default it had been the comma character `\f(CW,\fP'.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	636 In July 2000, Kimmo Suominen introduced
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	637 the configure option
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	638 .Sw --with-hash-backup
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	639 to change the default to the hash symbol `\f(CW#\fP'.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	640 The choice was probably personal preference, because first, the
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	641 option was named
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	642 .Sw --with-backup-prefix.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	643 and had the prefix symbol as argument.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	644 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	645 for Autoconf,
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	646 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	647 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	648 personal preference only.
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	649 Being related or not, words that start with the hash symbol
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	650 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	651 Thus, the command line
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	652 .Cl "rm #13 #15
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	653 calls
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	654 .Pn rm
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	655 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	656 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	657 To delete the backup files,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	658 .Cl "rm ./#13 ./#15"
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	659 needs to be used.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	660 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	661 data loss.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	662 .P
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	663 I removed the configure option but added the profile entry
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	664 .Pe backup-prefix ,
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	665 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	666 .Ci 6c40d481d661d532dd527eaf34cebb6d3f8ed086
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	667 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	668 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	669 it suited better.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	670 .P
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	671 Eventually, however, the new trash folder concept
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	672 .Cf "Sec. XXX
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	673 obsoleted the concept of the backup prefix completely.
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	674 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	675 .\" (Well, there still are corner-cases to remove until the backup
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	676 .\" prefix can be laid to rest, eventually.)
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	677 .\" FIXME: Do this work in the code!
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	678
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	679 .U3 "Editor and Pager
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	680 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	681 The two configure options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	682 .CW --with-editor=EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	683 .CW --with-pager=PAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	684 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	685 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	686 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	687 different systems.
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	688 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	689 The programs
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	690 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	691 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	692 .Pn more
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	693 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	694 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	695 (The specifications for
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	696 .Pn vi
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	697 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	698 .Pn more
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	699 appeared in
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	700 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	701 posix 1987
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	702 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	703 and,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	704 .[
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	705 posix 1992
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	706 .]
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	707 respectively.)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	708 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	709 .Ci 5d43a99db70c12a673028c7758c20cbe3e13ef5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	710 Not changed were the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	711 .Pe editor
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	712 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	713 .Pe moreproc
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	714 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	715 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	716 variables
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	717 .Ev VISUAL
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	718 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	719 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	720 if they are set.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	721 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	722 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	723 .IP (1)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	724 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	725 .Ev MMHEDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	726 .IP (2)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	727 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	728 .Pe Editor
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	729 .IP (3)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	730 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	731 .Ev VISUAL
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	732 .IP (4)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	733 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	734 .Ev EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	735 .IP (5)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	736 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	737 .Pn vi .
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	738 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	739 .Ci f85f4b7ae62e3d05a945dcd46ead51f0a2a89a9b
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	740 .P
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	741 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	742 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	743 .IP (1)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	744 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	745 .Ev MMHPAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	746 .IP (2)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	747 Profile entry
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	748 .Pe Pager
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	749 (replaces
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	750 .Pe moreproc )
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	751 .IP (3)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	752 Environment variable
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	753 .Ev PAGER
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	754 .IP (4)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	755 Command
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	756 .Pn more .
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	757 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	758 .Ci 0c4214ea2aec6497d0d67b436bbee9bc1d225f1e
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	759 .P
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	760 By respecting the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	761 .Ev VISUAL /\c
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	762 .Ev EDITOR
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	763 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	764 .Ev PAGER
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	765 environment variables,
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	766 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	767 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	768
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	769
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	770 .U3 "ndbm
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	771 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	772 .Pn slocal
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	773 used to depend on
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	774 .I ndbm ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	775 a database library.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	776 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	777 messages delivered.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	778 This enables
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	779 .Pn slocal
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	780 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	781 (This features was enabled by the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	782 .Sw -suppressdup
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	783 switch.)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	784 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	785 A variety of versions of the database library exist.
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	786 .[
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	787 wolter unix incompat notes dbm
64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	788 .]
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	789 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	790 Further more, the configure switches
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	791 .Sw --with-ndbm=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	792 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	793 .Sw --with-ndbmheader=ARG
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	794 were added to help with difficult setups that would
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	795 not be detected automatically or correctly.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	796 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	797 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	798 .Pn slocal ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	799 the dependency on
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	800 .I ndbm
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	801 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	802 .Ci ecd6d6a20cb7a1507e3a20d6c4cb3a1cf14c6bbf
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	803 The change removed functionality too, but that is minor to the
78 64f177ca2af1 Text rework. markus schnalke <meillo@marmaro.de> parents: 76 diff changeset	804 improvement by dropping the dependency and the complex autoconf code.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	805
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	806 .U3 "mh-e Support
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 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	809 .Sw --disable-mhe
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	810 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	811 Mh-e is the Emacs front-end to MH.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	812 It requires MH to provide minor additional functions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	813 The
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	814 .Sw --disable-mhe
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	815 configure option could switch these extensions off.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	816 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	817 only the
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	818 .Sw -build
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	819 switches of
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	820 .Pn forw
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	821 and
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	822 .Pn repl
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	823 are left to be mh-e extensions.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	824 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	825 In consequence, the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	826 .Sw --disable-mhe
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	827 configure option was removed
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	828 .Ci a7ce7b4a580d77b6c2c4d980812beb589aa4c643
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	829 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	830 needed to be tested.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	831 This change was first done in nmh and thereafter merged into mmh.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	832 .P
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	833 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	834 to be able to use mmh as back-end.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	835 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	836 .Sw -build
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	837 switches would require more rework.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	838
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	839 .U3 "Masquerading
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	840 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	841 The configure option
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	842 .Sw --enable-masquerade
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	843 could take up to three arguments:
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	844 `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	845 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	846 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	847 .Pn post
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	848 command, which provided an MSA.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	849 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	850 this field anymore.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	851 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	852 .P
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	853 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	854 .I mmailid
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	855 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	856 available in the original MH.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	857 It provided a
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	858 .I username
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	859 to
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	860 .I fakeusername
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	861 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	862 The man page
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	863 .Mp mh-tailor(5)
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	864 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	865 .QS
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	866 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	867 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	868 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	869 `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	870 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	871 ``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	872 .QE
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	873 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	874 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	875 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	876 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	877 does the reverse mapping for incoming mail (aliasing), too.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	878 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	879 mail software on the system.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	880 Hence, mmailid masquerading was removed.
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	881 .Ci 0836c8000ccb34b59410ef1c15b1b7feac70ce5f
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	882 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	883 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	884 .I username_extension
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	885 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	886 specified by the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	887 .Ev USERNAME_EXTENSION
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	888 environment variable, to it.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	889 This provided support for the
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	890 .I user-extension
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	891 feature of qmail and the similar
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	892 .I "plussed user
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	893 processing of sendmail.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	894 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	895 motivated by the fact that
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	896 .Pn spost
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	897 hadn't supported it already.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	898 .Ci 2abae0bfd0ad5bf898461e50aa4b466d641f23d9
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	899 Username extensions are possible in mmh, but less convenient to use.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	900 .\" 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	901 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	902 The
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	903 .I draft_from
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	904 masquerading type instructed
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	905 .Pn post
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	906 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	907 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	908 header field as SMTP envelope sender.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	909 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	910 .Ci b14ea6073f77b4359aaf3fddd0e105989db9
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	911 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	912 with technical differences.
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	913 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	914 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	915 by the MTA.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	916 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	917 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	918 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	919 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	920 header field and thereby propose
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	921 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	922 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	923 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	924 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	925 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	926 message header (\c
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	927 .Pn sendmail 's
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	928 .Sw -t
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	929 switch).
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	930 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	931 .Hd From
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	932 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	933 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	934
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	935 .U3 "Remaining Options
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	936 .P
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	937 Two configure options remain in mmh.
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	938 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	939 .Sw --with-locking=[dot\|fcntl\|flock\|lockf] .
76 2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	940 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	941 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	942 requires deeper technical investigation into the topic.
2e61e0004a8f Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 74 diff changeset	943 The other option,
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	944 .Sw --enable-debug ,
cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	945 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	946 This option is likely to stay.
72 bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	947
bae9273b5802 Wrote about configure options (not finished yet). markus schnalke <meillo@marmaro.de> parents: 69 diff changeset	948
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	949
63 abbaca05ee8e More text. markus schnalke <meillo@marmaro.de> parents: 62 diff changeset	950
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	951 .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	952 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	953 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	954 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	955 For example:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	956 .Cl "-truncate" .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	957 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	958 .Sw -help ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	959 to print a short message on how to use the program, and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	960 .Sw -Version ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	961 to tell what version of mmh the program belongs to.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	962 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	963 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	964 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	965 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	966 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	967 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	968 of a program.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	969 Changing the behavior of programs provides flexibility and customization
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	970 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	971 usage of the program.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	972 .\" XXX: Ref
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	973 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	974 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	975 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	976 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	977 problem of MH:
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	978 .[ [
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	979 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	980 .], p. 12]
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	981 .QS
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	982 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	983 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	984 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	985 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	986 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	987 .QP
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	988 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	989 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	990 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	991 .QE
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	992 .P
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	993 Being reluctant to adding new switches \(en or `options',
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	994 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	995 the other part is removing hardly used switches.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	996 Nmh's tools had lots of switches already implemented,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	997 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	998 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	999 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	1000 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	1001 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	1002 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	1003 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	1004 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	1005 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	1006 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	1007 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	1008 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	1009 ``[...]
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1010 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1011 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	1012 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	1013 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	1014 but this is not practical.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1015 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	1016 them strictly.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1017 Nevertheless, removing obsolete switches still is an effective approach
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1018 to deal with the problem.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1019 Working on an experimental branch without an established user base,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1020 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	1021 functions.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1022 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1023 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	1024 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1025 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	1026 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	1027 have remained in mmh's
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1028 .Pn send .
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1029 (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	1030 .P
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1031 Fig. XXX
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1032 .\" XXX Ref
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1033 displays the number of switches for each of the tools that is available
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1034 in both, nmh and mmh.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1035 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	1036 Visible and hidden switches were counted,
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1037 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	1038 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	1039 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	1040 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	1041 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	1042 has 4 now.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1043 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	1044 to 234.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1045
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1046 .KS
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1047 .in 1c
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1048 .so input/switches.grap
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1049 .KE
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1050
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1051 .P
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1052 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	1053 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	1054 Sometimes, however, the work flow was the other way:
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1055 I looked through the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1056 .Mp mh-chart (7)
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1057 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	1058 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	1059 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	1060 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	1061 the number of switches per command.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1062
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1063
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1064 .U3 "Draft Folder Facility
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1065 .P
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1066 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	1067 the single draft message to the draft folder facility.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1068 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1069 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	1070 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	1071 .[
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1072 rose romine real work
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1073 .]
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1074 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	1075 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	1076 possible to remove the
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1077 .Sw -[no]draftfolder ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1078 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1079 .Sw -draftmessage
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1080 switches from
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1081 .Pn comp ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1082 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1083 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1084 .Pn dist ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1085 .Pn whatnow ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1086 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1087 .Pn send .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1088 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1089 The only flexibility removed with this change is having multiple
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1090 draft folders within one profile.
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1091 I consider this a theoretical problem only.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1092 In the same go, the
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1093 .Sw -draft
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1094 switch of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1095 .Pn anno ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1096 .Pn refile ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1097 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1098 .Pn send
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1099 was removed.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1100 The special-casing of `the' draft message became irrelevant after
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1101 the rework of the draft system.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1102 (See Sec. XXX.)
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1103 Equally,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1104 .Pn comp
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1105 lost its
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1106 .Sw -file
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1107 switch.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1108 The draft folder facility, together with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1109 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1110 switch, are sufficient.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1111
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1112
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1113 .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	1114 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1115 .Pn anno
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1116 had the switches
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1117 .Sw -[no]inplace
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1118 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	1119 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	1120 Following the assumption that linked messages should truly be the
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1121 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	1122 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1123 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	1124 .Sw -inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1125 was made the only behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1126 .Ci c8195849d2e366c569271abb0f5f60f4ebf0b4d0
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1127 The
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1128 .Sw -[no]inplace
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1129 switches of
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1130 .Pn repl ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1131 .Pn forw ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1132 and
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1133 .Pn dist
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1134 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	1135 .Pn anno .
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1136 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1137 .Pn burst
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1138 also had
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1139 .Sw -[no]inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1140 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	1141 With
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1142 .Sw -inplace ,
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1143 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	1144 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	1145 after this message, renumbering all following messages.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1146 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	1147 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	1148 Nontheless, this behavior appeared less elegant than the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1149 .Sw -noinplace
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1150 behavior, which already had been the default.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1151 Nmh's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1152 .Mp burst (1)
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1153 man page reads:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1154 .sp \n(PDu
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1155 .QS
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1156 If -noinplace is given, each digest is preserved, no table
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1157 of contents is produced, and the messages contained within
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1158 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	1159 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	1160 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1161 .LP
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1162 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	1163 .Sw -inplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1164 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	1165 it caused.
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1166 .Sw -noinplace
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1167 was chosen to be the definitive behavior.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1168 .Ci 68a686adeb39223a5e1ad35e4a24890ec053679d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1169
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1170
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1171 .U3 "Forms and Format Strings
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1172 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1173 Historically, the tools that had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1174 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1175 switches to supply a form file had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1176 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1177 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	1178 on the command line directly.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1179 In consequence, the following two lines equaled:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1180 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1181 scan -form scan.mailx
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1182 scan -format "`cat .../scan.mailx`"
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1183 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1184 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1185 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1186 switches were dropped in favor for extending the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1187 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1188 switches.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1189 .Ci f51956be123db66b00138f80464d06f030dbb88d
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1190 If their argument starts with an equal sign (`='),
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1191 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	1192 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	1193 Thus, now the following two lines equal:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1194 .VS
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1195 scan -form scan.mailx
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1196 scan -form "=`cat .../scan.mailx`"
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1197 VE
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1198 This rework removed the prefix collision between
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1199 .Sw -form
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1200 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1201 .Sw -format .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1202 Now, typing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1203 .Sw -fo
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1204 suffices to specify form or format string.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1205 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1206 The different meaning of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1207 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1208 for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1209 .Pn repl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1210 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1211 .Pn forw
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1212 was removed in mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1213 .Pn forw
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1214 was completely switched to MIME-type forwarding, thus removing the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1215 .Sw -[no]format .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1216 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1217 For
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1218 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1219 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1220 .Sw -[no]format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1221 switches were reworked to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1222 .Sw -[no]filter
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1223 switches.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1224 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1225 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1226 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1227 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1228 .Pn send
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1229 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1230 .Pn post ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1231 which had a third meaning,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1232 were removed likewise.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1233 .Ci f3cb7cde0e6f10451b6848678d95860d512224b9
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1234 Eventually, the ambiguity of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1235 .Sw -format
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1236 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	1237
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1238
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1239 .U3 "MIME Tools
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1240 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1241 The MIME tools, which were once part of
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1242 .Pn mhn
6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1243 [sic!],
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1244 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	1245 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1246 .Sw -[no]realsize
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1247 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1248 .Pn mhbuild
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 mhlist
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1251 were removed, doing real size calculations always now
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1252 .Ci 8d8f1c3abc586c005c904e52c4adbfe694d2201c ,
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1253 as
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1254 ``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	1255 This small delay is not noticable on modern systems.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1256 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1257 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1258 .Sw -[no]check
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1259 switches were removed together with the support for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1260 .Hd Content-MD5
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1261 header fields.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1262 .[
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1263 rfc 1864
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1264 .]
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1265 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1266 (See Sec. XXX)
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1267 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1268 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1269 .Sw -[no]ebcdicsafe
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1270 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1271 .Sw -[no]rfc934mode
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1272 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1273 .Pn mhbuild
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1274 were removed because they are considered obsolete.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1275 .Ci 01a3480928da485b4d6109d36d751dfa71799d58
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1276 .Ci 3363e2624dce0eb8164cf8b3f1ab385c8ff72e88
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1277 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1278 Content caching of external MIME parts, activated with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1279 .Sw -rcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1280 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1281 .Sw -wcache
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1282 switches was completely removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1283 .Ci d1fefd9f614e4dc3cda16da6c69133c1b2005269
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1284 External MIME parts are rare today, having a caching facility
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1285 for them is appears to be unnecessary.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1286 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1287 In pre-MIME times,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1288 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1289 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	1290 Therefore,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1291 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1292 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	1293 switches from 21 to 6.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1294 .Ci 350ad6d3542a07639213cf2a4fe524e829c1e7b6
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1295 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1296
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1297
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1298 .U3 "Mail Transfer Switches
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1299 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1300 With the removal of the mail transfer facilities, a lot of switches
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1301 vanished automatically.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1302 .Pn inc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1303 lost 9 switches, namely
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1304 .Sw -host ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1305 .Sw -port ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1306 .Sw -user ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1307 .Sw -proxy ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1308 .Sw -snoop ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1309 .Sw -[no]pack ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1310 as well as
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1311 .Sw -sasl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1312 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1313 .Sw -saslmech .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1314 .Pn send
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1315 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1316 .Pn post
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1317 lost 11 switches each, namely
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1318 .Sw -server ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1319 .Sw -port ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1320 .Sw -client ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1321 .Sw -user ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1322 .Sw -mail ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1323 .Sw -saml ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1324 .Sw -send ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1325 .Sw -soml ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1326 .Sw -snoop ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1327 as well as
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1328 .Sw -sasl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1329 .Sw -saslmech ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1330 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1331 .Sw -tls .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1332 .Pn send
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1333 had the switches only to pass them further to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1334 .Pn post ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1335 because the user would invoke
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1336 .Pn post
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1337 not directly, but through
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1338 .Pn send .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1339 All these switches, except
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1340 .Sw -snoop
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1341 were usually defined as default switches in the user's profile,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1342 but hardly given in interactive usage.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1343 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1344 Of course, those switches did not really ``vanish'', but the configuration
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1345 they did was handed over to external MSAs and MRAs.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1346 Instead of setting up the mail transfer in mmh, it is set up in
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1347 external tools.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1348 Yet, this simplifies mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1349 Specialized external tools will likely have simple configuration files.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1350 Hence, instead of having one complicated central configuration file,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1351 the configuration of each domain is separate.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1352 Although the user needs to learn to configure each of the tools,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1353 each configuration is likely much simpler.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1354
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1355
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1356 .U3 "Maildrop Formats
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1357 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1358 With the removal of MMDF maildrop format support,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1359 .Pn packf
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1360 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1361 .Pn rcvpack
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1362 no longer needed their
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1363 .Sw -mbox
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1364 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1365 .Sw -mmdf
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1366 switches.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1367 .Sw -mbox
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1368 is the sole behavior now.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1369 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1370 In the same go,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1371 .Pn packf
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1372 and
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1373 .Pn rcvpack
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1374 were reworked (see Sec. XXX) and their
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1375 .Sw -file
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1376 switch became unnecessary.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1377 .Ci ca1023716d4c2ab890696f3e41fa0d94267a940e
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1378
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1379
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1380 .U3 "Terminal Magic
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1381 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1382 Mmh's tools will no longer clear the screen (\c
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1383 .Pn scan 's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1384 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1385 .Pn mhl 's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1386 .Sw -[no]clear
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1387 switches
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1388 .Ci e57b17343dcb3ff373ef4dd089fbe778f0c7c270
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1389 .Ci 943765e7ac5693ae177fd8d2b5a2440e53ce816e ).
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1390 Neither will
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1391 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1392 ring the bell (\c
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1393 .Sw -[no]bell
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1394 .Ci e11983f44e59d8de236affa5b0d0d3067c192e24 )
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1395 nor page the output itself (\c
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1396 .Sw -length
29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1397 .Ci 5b9d883db0318ed2b84bb82dee880d7381f99188 ).
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1398 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1399 Generally, the pager to use is no longer specified with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1400 .Sw -[no]moreproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1401 command line switches for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1402 .Pn mhl
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1403 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1404 .Pn show /\c
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1405 .Pn mhshow .
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1406 .Ci 39e87a75b5c2d3572ec72e717720b44af291e88a
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1407 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1408 .Pn prompter
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1409 lost its
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1410 .Sw -erase
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1411 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1412 .Sw -kill
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1413 switches because today the terminal cares for the line editing keys.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1414
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1415
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1416 .U3 "Header Printing
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1417 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1418 .Pn folder 's
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1419 data output is self-explaining enough that
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1420 displaying the header line makes few sense.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1421 Hence, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1422 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1423 switch was removed and headers are never printed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1424 .Ci 601cc73d1fa05ce96faa728f036d6c51b91701c7
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1425 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1426 In
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1427 .Pn mhlist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1428 the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1429 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1430 switches were removed, too.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1431 .Ci b24f96523aaf60e44e04a3ffb1d22e69a13a602f
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1432 But in this case headers are always printed,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1433 because the output is not self-explaining.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1434 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1435 .Pn scan
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1436 also had
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1437 .Sw -[no]header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1438 switches.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1439 Printing the header had been sensible until the introduction of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1440 format strings made it impossible to display the column headings.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1441 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	1442 As this information can be perfectly retrieved by
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1443 .Pn folder
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1444 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1445 .Pn date ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1446 consequently, the switches were removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1447 .Ci c477dc5d1d03fa6d9a8ab3dd3508c63cbddc044e
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1448 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1449 By removing all
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1450 .Sw -header
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1451 switches, the collision with
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1452 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1453 on the first two letters was resolved.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1454 Currently,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1455 .Sw -h
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1456 evaluates to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1457 .Sw -help
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1458 for all tools of mmh.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1459
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1460
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1461 .U3 "Suppressing Edits or the WhatNow Shell
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1462 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1463 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1464 .Sw -noedit
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1465 switch of
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1466 .Pn comp ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1467 .Pn repl ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1468 .Pn forw ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1469 .Pn dist ,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1470 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1471 .Pn whatnow
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1472 was removed, but it can now be replaced by specifying
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1473 .Sw -editor
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1474 with an empty argument.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1475 .Ci 75fca31a5b9d5c1a99c74ab14c94438d8852fba9
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1476 (Specifying
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1477 .Cl "-editor true
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1478 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	1479 .P
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1480 The more important change is the removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1481 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1482 switch.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1483 .Ci ee4f43cf2ef0084ec698e4e87159a94c01940622
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1484 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	1485 man page for
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1486 .Mp comp (1):
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1487 .QS
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1488 The \-editor editor switch indicates the editor to use for
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1489 the initial edit. Upon exiting from the editor, comp will
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1490 invoke the whatnow program. See whatnow(1) for a discussion
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1491 of available options. The invocation of this program can be
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1492 inhibited by using the \-nowhatnowproc switch. (In truth of
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1493 fact, it is the whatnow program which starts the initial
d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1494 edit. Hence, \-nowhatnowproc will prevent any edit from
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1495 occurring.)
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1496 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1497 .P
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1498 Effectively, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1499 .Sw -nowhatnowproc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1500 switch creates only a draft message.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1501 As
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1502 .Cl "-whatnowproc true
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1503 causes the same behavior, the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1504 .Sw -nowhatnowproc
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1505 switch was removed for being redundant.
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1506 Likely, the
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1507 .Sw -nowhatnowproc
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1508 switch was intended to be used by front-ends.
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1509
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1510
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1511 .U3 "Compatibility Switches
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1512 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1513 The hidden
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1514 .Sw -[no]total
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1515 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1516 .Pn flist .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1517 They were simply the inverse of the visible
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1518 .Sw -[no]fast
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1519 switches:
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1520 .Sw -total
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1521 was
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1522 .Sw -nofast
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1523 and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1524 .Sw -nototal
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1525 was
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1526 .Sw -fast .
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1527 I removed the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1528 .Sw -[no]total
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1529 legacy.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1530 .Ci ea21fe2c4bd23c639bef251398fae809875732ec
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1531 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1532 The
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1533 .Sw -subject
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1534 switch of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1535 .Pn sortm
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1536 existed for compatibility only.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1537 It can be fully replaced by
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1538 .Cl "-textfield subject
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1539 thus it was removed.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1540 .Ci 00140a3c86e9def69d98ba2ffd4d6e50ef6326ea
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1541
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1542
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1543 .U3 "Various
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1544 .BU
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1545 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	1546 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1547 switch was renamed to
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1548 .Sw -Version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1549 (with capital `V').
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1550 .Ci 32b2354dbaf4bf934936eb5b102a4a3d2fdd209a
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1551 Every program has the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1552 .Sw -version
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1553 switch but its first three letters collided with the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1554 .Sw -verbose
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1555 switch, present in many programs.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1556 The rename solved this problem once for all.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1557 Although this rename breaks a basic interface, having the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1558 .Sw -V
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1559 abbreviation to display the version information, isn't all too bad.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1560 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1561 .Sw -[no]preserve
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1562 of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1563 .Pn refile
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1564 was removed because what use was it anyway?
98 d894191d7a33 style: Changed the block quote approach. New QS and QE. markus schnalke <meillo@marmaro.de> parents: 97 diff changeset	1565 .QS
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1566 Normally when a message is refiled, for each destination
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1567 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	1568 highest message number in that folder. Use of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1569 \-preserv [sic!] switch will override this message renaming, and try
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1570 to preserve the number of the message. If a conflict for a
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1571 particular folder occurs when using the \-preserve switch,
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1572 then refile will use the next available message number which
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1573 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	1574 .QE
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1575 .BU
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1576 The removal of the
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1577 .Sw -[no]reverse
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1578 switches of
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1579 .Pn scan
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1580 .Ci 8edc5aaf86f9f77124664f6801bc6c6cdf258173
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1581 is a bug fix, supported by the comments
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1582 ``\-[no]reverse under #ifdef BERK (I really HATE this)''
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1583 by Rose and
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1584 ``Lists messages in reverse order with the `\-reverse' switch.
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1585 This should be considered a bug.'' by Romine in the documentation.
97 29a7454fcded Added references to commits. markus schnalke <meillo@marmaro.de> parents: 96 diff changeset	1586 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	1587 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	1588 thereafter.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1589
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1590
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1591 .ig
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1592
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1593 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	1594
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1595 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	1596
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1597 mhmail: resent queued
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1598 inc: snoop, (pop)
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1599
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1600 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	1601 [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	1602
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1603 prompter: [no]doteof
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1604
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1605 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	1606
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1607 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	1608 [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	1609 attach attachformat
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1610 whatnow: (noedit) attach
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1611
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1612 slocal: [no]suppressdups
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1613
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1614 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	1615 [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	1616
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1617 whom: ???
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1618
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1619 ..
93 093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1620
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1621
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1622 .ig
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1623
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1624 .P
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1625 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	1626 or on the three-letter prefix for the `no' variants.
96 12348d620245 Spell checking. markus schnalke <meillo@marmaro.de> parents: 95 diff changeset	1627 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	1628 the user must type.
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1629 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	1630
093ccf39a45e Write text about removal of switches; Included the grap figure. markus schnalke <meillo@marmaro.de> parents: 89 diff changeset	1631 ..
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1632
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1633
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1634 .\" XXX: whatnow prompt commands
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1635
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1636
95 edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1637
edac7e46a9f2 More text about switches. markus schnalke <meillo@marmaro.de> parents: 93 diff changeset	1638
74 cefaa856d431 A lot of new text about configure switches. markus schnalke <meillo@marmaro.de> parents: 72 diff changeset	1639 .H1 "Modernizing
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1640 .P
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1641 In the over thirty years of MH's existence, its code base was
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1642 extended more and more.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1643 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	1644 existing behavior.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1645 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	1646 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	1647 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	1648 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	1649 It focuses on the functional aspect only;
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1650 the non-functional aspects of code style are discussed in
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1651 .\" FIXME REF
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	1652 Sec. XXX.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1653
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1654
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	1655 .H2 "Code Relicts
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1656 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1657 My position to drop obsolete functions of mmh, in order to remove old code,
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1658 is much more revolutional than the nmh community likes to have it.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1659 Working on an experimental version, I was able to quickly drop
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1660 functionality I considered ancient.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1661 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	1662 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	1663 In December 2011, Paul Vixie motivated the nmh developers to just
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1664 do the work:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1665 .[
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1666 paul vixie edginess nmh-workers
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1667 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1668 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1669 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	1670 discuss whether to keep using vfork, just note in [sic!] passing, [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1671 we don't need a separate branch for removing vmh
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1672 or ridding ourselves of #ifdef's or removing posix replacement functions
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1673 or depending on pure ansi/posix "libc".
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1674 .QP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1675 these things should each be a day or two of work and the "main branch"
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1676 should just be modern. [...]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1677 let's push forward, aggressively.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1678 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1679 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1680 I did so already in the months before.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1681 I pushed forward.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1682 I simply dropped the cruft.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1683 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1684 The decision to drop a feature was based on literature research and
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1685 careful thinking, but whether having had contact to this particular
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1686 feature within my own computer life served as a rule of thumb.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1687 Always, I explained my reasons in the commit messages
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1688 in the version control system.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1689 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	1690 if I have missed an important aspect.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1691 I was quick in dropping parts.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1692 I rather re-included falsely dropped parts than going a slower pace.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1693 Mmh is experimental work; it required tough decisions.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1694
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1695
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1696 .U3 "Forking
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	1697 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1698 Being a tool chest, MH creates many processes.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1699 In earlier times
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1700 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1701 had been an expensive system call, because the process's image needed
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1702 to be duplicated completely at once.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1703 This was especially painful in the common case when the image gets
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1704 replaced by a call to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1705 .Fu exec()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1706 right after having forked the child process.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1707 The
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 system call was invented to speed up this particular case.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1710 It completely omits the duplication of the image.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1711 On old systems this resulted in significant speed ups.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1712 Therefore MH used
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1713 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1714 whenever possible.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1715 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1716 Modern memory management units support copy-on-write semantics, which make
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 almost as fast as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1719 .Fu vfork() .
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1720 The man page of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1721 .Mp vfork (2)
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1722 in FreeBSD 8.0 states:
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1723 .QS
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1724 This system call will be eliminated when proper system sharing mechanisms
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1725 are implemented. Users should not depend on the memory sharing semantics
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1726 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	1727 .QE
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1728 .LP
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1729 Vixie supports the removal with the note that ``the last
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1730 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	1731 Eunice. that was 1987''.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1732 .[
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1733 nmh-workers vixie edginess
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1734 .]
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1735 I replaced all calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1736 .Fu vfork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1737 with calls to
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1738 .Fu fork() .
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1739 .Ci 40821f5c1316e9205a08375e7075909cc9968e7d
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1740 .P
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1741 Related to the costs of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1742 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1743 is the probability of its success.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1744 In the eighties, on heavy loaded systems, calls to
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1745 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1746 were prone to failure.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1747 Hence, many of the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1748 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1749 calls in the code were wrapped into loops to retry the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1750 .Fu fork()
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1751 several times, to increase the changes to succeed, eventually.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1752 On modern systems, a failing
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1753 .Fu fork()
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1754 call is unusual.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1755 Hence, in the rare case when
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1756 .Fu fork()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1757 fails, mmh programs simply abort.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1758 .Ci 5fbf37ee68e018998ada61eeab73e035b26834b6
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1759
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1760
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1761 .U3 "Header Fields
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1762 .BU
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1763 The
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1764 .Hd Encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1765 header field was introduced by RFC\\|822,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1766 but already marked as legacy in RFC\\|2822.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1767 Today, OpenPGP provides the basis for standardized exchange of encrypted
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1768 messages [RFC\\|4880, RFC\\|3156].
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1769 Hence, the support for
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1770 .Hd Encrypted
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1771 header fields is removed in mmh.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1772 .Ci 064527f7b57ab050e5af13e15ad99aeeab125857
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1773 .BU
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1774 Native support for
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1775 .Hd Face
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1776 header fields has been removed, as well.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1777 .Ci 8e5be81f784682822f5e868c1bf3c8624682bd23
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1778 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	1779 .Hd X-Face
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1780 header field in its intent,
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1781 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	1782 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	1783 it contains the hostname and UDP port where the image
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1784 date can be retrieved.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1785 There exists even a third Face system,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1786 which is the successor of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1787 .Hd X-Face ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1788 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	1789 .Hd Face
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1790 header field.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1791 It was invented in 2005 and supports colored PNG images.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1792 None of the Face systems described here is popular today.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1793 Hence, mmh has no direct support for them.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1794 .BU
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1795 The
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1796 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1797 header field was introduced by RFC\\|1864.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1798 It provides detection of data corruption during the transfer.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1799 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	1800 [RFC\\|1864].
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1801 The proper approach to verify content integrity in an
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1802 end-to-end relationship is the use of digital cryptography.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1803 .\" XXX (RFCs FIXME).
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1804 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	1805 the transmission.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1806 The TCP includes a checksum field therefore.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1807 These two approaches in combinations render the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1808 .Hd Content-MD5
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1809 header field superfluous.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1810 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	1811 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	1812 .Hd Content-MD5
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1813 header field.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1814 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	1815 Removing the support for this header field,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1816 removed the last place where MD5 computation was needed.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1817 .Ci 31dc797eb5178970d68962ca8939da3fd9a8efda
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1818 Hence, the MD5 code could be removed as well.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1819 Over 500 lines of code vanished by this one change.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1820
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1821
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1822 .U3 "MMDF maildrop support
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1823 .P
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1824 This type of format is conceptionally similar to the mbox format,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1825 but uses a different message delimiter (`\fL^A^A^A^A\fP' instead of
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1826 `\fLFrom\0\fP').
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1827 Mbox is the de-facto standard maildrop format on Unix,
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1828 whereas the MMDF maildrop format became forgotten.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1829 I did drop MMDF maildrop format support.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1830 Mbox is the only packed mailbox format supported in mmh.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1831 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1832 The simplifications within the code were moderate.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1833 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	1834 But also, switches of
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1835 .Pn packf
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1836 and
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1837 .Pn rcvpack
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1838 could be removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1839 .Ci 3916ab66ad5d183705ac12357621ea8661afd3c0
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1840 In the message parsing function
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1841 .Fn sbr/m_getfld.c ,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1842 knowledge of MMDF packed mail boxes was removed.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1843 .Ci 684ec30d81e1223a282764452f4902ed4ad1c754
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1844 Further code structure simplifications may be possible there,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1845 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	1846 I have not worked on them yet because
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1847 .Fu m_getfld()
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1848 is heavily optimized and thus dangerous to touch.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1849 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	1850 too high.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1851 .\" XXX: move somewhere else
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1852 This problem is know to the developers of nmh, too.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1853 They also avoid touching this minefield.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1854
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1855
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1856 .U3 "Prompter's Control Keys
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1857 .P
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1858 The program
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1859 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1860 queries the user to fill in a message form.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1861 When used by
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1862 .Pn comp
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1863 as
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1864 .Cl "comp -editor prompter" ,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1865 the resulting behavior is similar to
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1866 .Pn mailx .
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	1867 Apparently,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1868 .Pn prompter
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1869 hadn't been touched lately.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1870 Otherwise it's hardly explainable why it
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1871 still offered the switches
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1872 .Sw -erase
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1873 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1874 and
84 c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1875 .Sw -kill
c35ec2b7de5d style: New macros .Ar (argument) and .Hd (header field) markus schnalke <meillo@marmaro.de> parents: 82 diff changeset	1876 .Ar chr
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1877 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	1878 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	1879 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	1880 with the standard tool
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1881 .Pn stty .
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1882 The switches are removed now
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1883 .Ci 0bd9750710cdbab80cfb4036dd87af20afe1552f .
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	1884
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1885
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1886 .U3 "Hardcopy Terminal Support
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1887 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1888 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	1889 hardcopy terminal.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1890 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	1891 .Ci b7764c4a6b71d37918a97594d866258f154017ca .
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1892 I would be truly happy to see such a terminal in action today,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1893 maybe even being able to work on it.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1894 But I fear my chances are null.
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1895 .P
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1896 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	1897 program (\c
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1898 .Pn mhl )
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1899 and the terminal.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1900 In nmh, this could have been ensured statically with the
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1901 .Sw -nomoreproc
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1902 at the command line, too.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	1903 In mmh, setting the profile entry
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1904 .Pe Pager
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1905 or the environment variable
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1906 .Ev PAGER
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1907 to
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1908 .Pn cat
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1909 does the job.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1910
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	1911
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	1912
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	1913
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	1914 .H2 "Attachments
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	1915 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1916 The mind model of email attachments is unrelated to MIME.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1917 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	1918 requirements for having attachments, they do not mention the word
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1919 ``attachment''.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1920 Instead of attachments, MIME talks about ``multi-part message bodies''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1921 [RFC\\|2045], a more general concept.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1922 Multi-part messages are messages
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1923 ``in which one or more different
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1924 sets of data are combined in a single body''
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1925 [RFC\\|2046].
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1926 MIME keeps its descriptions generic;
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1927 it does not imply specific usage models.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1928 One usage model became prevalent: attachments.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1929 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	1930 attached to it.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1931 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	1932 and parts of arbitrary type following.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1933 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1934 MH's MIME support is a direct implementation of the RFCs.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1935 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	1936 in MH's implementation.
109 2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1937 In result, MH had all the MIME features but no idea of attachments.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1938 But users don't need all the MIME features,
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1939 they want convenient attachment handling.
2b094b8fb422 Rework of existing text. markus schnalke <meillo@marmaro.de> parents: 108 diff changeset	1940
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1941
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1942 .U3 "Composing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1943 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1944 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	1945 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	1946 .Ci 7480dbc14bc90f2d872d434205c0784704213252
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1947 In the file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1948 .Fn docs/README-ATTACHMENTS ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1949 he described his motivation to do so as such:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1950 .QS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1951 Although nmh contains the necessary functionality for MIME message handing,
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1952 the interface to this functionality is pretty obtuse.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1953 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	1954 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1955 composition files!
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1956 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1957 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1958 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	1959 In the same document:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1960 .QS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1961 These changes simplify the task of managing attachments on draft files.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1962 They allow attachments to be added, listed, and deleted.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1963 MIME messages are automatically created when drafts with attachments
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1964 are sent.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1965 .QE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1966 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1967 Unfortunately, the attachment system,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1968 like any new facilities in nmh,
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1969 was inactive by default.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1970 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1971 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	1972 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	1973 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	1974 .[
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1975 nmh-workers attachment proposal
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1976 .]
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	1977 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	1978 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1979 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	1980 Instead of command line switches, the
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1981 .Pe Attachment-Header
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1982 profile entry is used to specify
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1983 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	1984 It is pre-defined to
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1985 .Hd Attach .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	1986 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1987 To add an attachment to a draft, simply add an attachment header:
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1988 .VS
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1989 To: bob
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1990 Subject: The file you wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1991 Attach: /path/to/the/file-bob-wanted
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1992 --------
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1993 Here it is.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1994 VE
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1995 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	1996 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	1997 non-interactively with
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1998 .Pn anno :
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	1999 .VS
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2000 anno -append -nodate -component Attach -text /path/to/attachment
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2001 VE
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2002 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	2003 .Pn send .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2004 The conversion to MIME is invisible to the user.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2005 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	2006 attachment headers.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2007 If the MIMEification fails, for instance because the file to attach
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2008 is not accessible, the original draft is not changed.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2009 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2010 The attachment system handles the forwarding of messages, too.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2011 If the attachment header value starts with a plus character (`+'),
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2012 like in
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2013 .Cl "Attach: +bob 30 42" ,
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2014 The given messages in the specified folder will be attached.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2015 This allowed to simplify
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2016 .Pn forw .
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2017 .Ci f41f04cf4ceca7355232cf7413e59afafccc9550
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2018 .P
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2019 Closely related to attachments is non-ASCII text content,
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2020 because it requires MIME too.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2021 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	2022 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	2023 This was necessary whenever the draft contained non-ASCII characters.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2024 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	2025 Therefore, the
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2026 .Pe automimeproc
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2027 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	2028 automatically each time.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2029 Unfortunately, this approach conflicted with with attachment system
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2030 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	2031 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	2032 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	2033 WhatNow prompt and
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2034 .Pe automimeproc
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2035 must not be set in the profile.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2036 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	2037 not caught.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2038 All in all, the solution was complex and irritating.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2039 My patch from December 2010 would have simplified the situation.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2040 .P
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2041 Mmh's current solution is even more elaborate.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2042 Any necessary MIMEification is done automatically.
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2043 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	2044 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	2045 attachment header or non-ASCII text is present.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2046 Further more, the special meaning of the hash character (`#')
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2047 at line beginnings in the draft message is removed.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2048 Users need not at all deal with the whole topic.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2049 .P
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2050 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	2051 compositions directly, the full power of
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2052 .Pn mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2053 can still be accessed.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2054 Given no attachment headers are included, the user can create
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2055 .Pn mhbuild
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2056 composition drafts like in nmh.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2057 Then, at the WhatNow prompt, he needs to invoke
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2058 .Cl "edit mhbuild
e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2059 to convert it to MIME.
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2060 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	2061 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	2062 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2063 The approach taken in mmh is tailored towards todays most common case:
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2064 a text part with possibly attachments.
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2065 This case is simplified a lot for users.
101 e8e6adb14beb Wrote about attachments. markus schnalke <meillo@marmaro.de> parents: 100 diff changeset	2066
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2067
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2068 .U3 "MIME Type Guessing
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2069 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2070 The use of
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2071 .Pn mhbuild
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2072 composition drafts had one notable advantage over attachment headers
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2073 from the programmer's point of view: The user provides the appropriate
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2074 MIME types for files to include.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2075 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	2076 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	2077 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	2078 partly intelligent work.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2079 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	2080 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	2081 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	2082 content.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2083 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	2084 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2085 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	2086 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	2087 for the common cases.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2088 Mmh implements this approach in the
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2089 .Pn print-mimetype
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2090 script.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2091 .Ci 4b5944268ea0da7bb30598a27857304758ea9b44
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2092 Using it is the default choice.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2093 .P
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2094 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	2095 .Pn file .
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2096 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	2097 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	2098 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	2099 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	2100 It varies much.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2101 Nevertheless, modern versions of GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2102 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2103 which is prevalent on the popular GNU/Linux systems,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2104 provides MIME type output in machine-readable form.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2105 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	2106 it solves the difficult problem well.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2107 On systems where GNU
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2108 .Pn file ,
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2109 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	2110 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	2111 .Ci 3baec236a39c5c89a9bda8dbd988d643a21decc6
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2112 .VS
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2113 Mime-Type-Query: file -b --mime
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2114 VE
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2115 .LP
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2116 Other versions of
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2117 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2118 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	2119 The diversity among
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2120 .Pn file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2121 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	2122 .P
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2123 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	2124 `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	2125 `application/octet-stream'.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2126 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	2127 for a specific file.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2128 To do so, the user would need to know in advance for which file
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2129 the automatic guessing does fail, or the system would require interaction.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2130 I consider both cases impractical.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2131 The existing solution should be sufficient.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2132 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	2133 .Pn mhbuild
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2134 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	2135
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2136
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2137 .U3 "Storing Attachments
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2138 .P
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2139 Extracting MIME parts of a message and storing them to disk is done by
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2140 .Pn mhstore .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2141 The program has two operation modes,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2142 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2143 and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2144 .Sw -noauto .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2145 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	2146 MIME part's meta information, if available.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2147 This naming information is usually available for modern attachments.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2148 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	2149 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2150 would have been specified.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2151 In the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2152 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2153 mode, the parts are processed according to rules, defined by
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2154 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2155 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2156 These rules define generic filename templates for storing
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2157 or commands to post-process the contents in arbitrary ways.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2158 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	2159 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	2160 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2161 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2162 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2163 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	2164 in contrast to the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2165 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2166 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2167 In mmh,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2168 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2169 is not dangerous anymore.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2170 Two changes were necessary:
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2171 .BU
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2172 Any directory path is removed from the proposed filename.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2173 Thus, the files are always stored in the expected directory.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2174 .Ci 41b6eadbcecf63c9a66aa5e582011987494abefb
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2175 .BU
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2176 Tar files are not extracted automatically any more.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2177 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	2178 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2179 .LP
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2180 Now, the outcome of mmh's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2181 .Cl "mhstore -auto
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	2182 can be foreseen from the output of
108 dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2183 .Cl "mhlist -verbose" .
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2184 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2185 The
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2186 .Sw -noauto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2187 mode is seen to be more powerful but less convenient.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2188 On the other hand,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2189 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2190 is safe now and
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2191 storing attachments under their original name is intuitive.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2192 Hence,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2193 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2194 serves better as the default option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2195 .Ci 3410b680416c49a7617491af38bc1929855a331d
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2196 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2197 Files are stored into the directory given by the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2198 .Pe Nmh-Storage
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2199 profile entry, if set, or
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2200 into the current working directory, otherwise.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2201 Storing to different directories is only possible with
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2202 .Pe mhstore-store-*
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2203 profile entries.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2204 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2205 Still, in both modes, existing files get overwritten silently.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2206 This can be considered a bug.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2207 Yet, each other behavior has its draw-backs, too.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2208 Refusing to replace files requires adding a
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2209 .Sw -force
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2210 option.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2211 Users will likely need to invoke
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2212 .Pn mhstore
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2213 a second time with
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2214 .Sw -force
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2215 then.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2216 Eventually, only the user can decide in the concrete case.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2217 This requires interaction, which I like to avoid if possible.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2218 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	2219 For now, the behavior remains as it is.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2220 .P
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2221 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	2222 .Pn mhstore 's
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2223 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2224 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2225 Instead of storing message/rfc822 parts as files to disk,
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2226 they are stored as messages into the current mail folder.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2227 The same applies to message/partial, only, the parts are reassembled
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2228 automatically before.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2229 Parts of type message/external-body are not automatically retrieved
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2230 anymore. Instead, Information on how to retrieve them is output.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2231 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	2232 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2233 .\" 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	2234 .\" and sbr/ruserpass.c for reading ~/.netrc are gone now.)
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2235 Not special anymore is `application/octet-stream; type=tar'.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2236 Automatically extracting such MIME parts had been the dangerous part
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2237 of the
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2238 .Sw -auto
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2239 mode.
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2240 .Ci 94c80042eae3383c812d9552089953f9846b1bb6
dd5620bf8659 Wrote about storing attachments. markus schnalke <meillo@marmaro.de> parents: 107 diff changeset	2241
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2242
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2243
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2244 .U3 "Showing MIME Messages
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2245 .P
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2246 The program
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2247 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2248 had been written to display MIME messages.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2249 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	2250 Nmh's
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 handled each MIME part independently, presenting them separately
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2253 to the user.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2254 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	2255 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	2256 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	2257 plus possibly attachments.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2258 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	2259 information on how to display the individual parts.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2260 I adjusted
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2261 .Pn mhshow 's
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2262 behavior to the modern view on the topic.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2263 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2264 Note that this section completely ignores 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 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	2267 and is no longer part of mmh.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2268 Although
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 was renamed to
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2271 .Pn show
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2272 in mmh, this section uses the name
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2273 .Pn mhshow ,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2274 in order to avoid confusion.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2275 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2276 In mmh, the basic idea is that
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 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	2279 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2280 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2281 invokes a pager session for all its output,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2282 whenever it prints to a terminal.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2283 .Ci a4197ea6ffc5c1550e8b52d5a654bcaaaee04a4e
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2284 In consequence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2285 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2286 does no more invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2287 .Ci 0e46503be3c855bddaeae3843e1b659279c35d70
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2288 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2289 .Pn mhshow
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2290 replacing the original
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2291 .Pn show ,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2292 output from
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2293 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2294 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	2295 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2296 Hence,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2297 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2298 does not need to invoke a pager.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2299 The one and only job of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2300 .Pn mhl
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2301 is to format messages or parts of them.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2302 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	2303 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2304 .P
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 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	2307 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	2308 to display them in the terminal.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2309 In mmh, the displaying of MIME parts will always be done serially.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2310 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	2311 is ignored.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2312 It is simply treated as `multipart/mixed'.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2313 .Ci d0581ba306a7299113a346f9b4c46ce97bc4cef6
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2314 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	2315 .Sw -serialonly
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2316 switch of
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2317 .Pn mhshow .
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2318 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	2319 the `%e' escape in
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2320 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2321 profile entries became useless and was thus removed.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2322 .Ci a20d405db09b7ccca74d3e8c57550883da49e1ae
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2323 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2324 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	2325 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	2326 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2327 profile entries before, if possible and wanted.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2328 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	2329 Other kinds of attachments are ignored.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2330 With
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2331 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2332 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	2333 the message.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2334 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	2335 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2336 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	2337 to the native charset.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2338 Therefore,
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2339 .Pe mhshow-charset-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2340 profile entries used to be needed.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2341 In mmh, the conversion is done automatically by piping the text through
114 92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2342 the
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2343 .Pn iconv
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2344 command, if necessary.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2345 .Ci 2433122c20baccb10b70b49c04c6b0497b5b3b60
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2346 Custom
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2347 .Pe mhshow-show-*
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2348 rules for textual content might need a
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2349 .Cl "iconv -f %c %f \|
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2350 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	2351 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2352 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	2353 has improved, it is not consistent enough.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2354 Further work needs to be done and
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2355 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	2356 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	2357 correctly without the need to configure anything.
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2358
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2359
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2360 .ig
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2361
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2362 .P
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2363 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	2364 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	2365 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	2366 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	2367 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	2368 it!
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2369 (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	2370 ~/.netrc are gone now.)
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2371 .Ci 55e1d8c654ee0f7c45b9361ce34617983b454c32
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2372
92cbd3fa1c40 Wrote text about displaying mime messages. markus schnalke <meillo@marmaro.de> parents: 112 diff changeset	2373 ..
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2374
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2375
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2376
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2377 .H2 "Digital Cryptography
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	2378 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2379 Signing and encryption.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2380 .P
4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2381 FIXME
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2382
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2383
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2384
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2385 .H2 "Modern Defaults
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	2386 .P
116 4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2387 Nmh has a bunch of convenience-improving features inactive by default,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2388 although one can expect every new user wanting to have them active.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2389 The reason they are inactive by default is the wish to stay compatible
4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2390 with old versions.
116 4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2391 But what is the definition for old versions.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2392 Still, the highly useful draft folder facility is not active by default
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2393 although it had been introduced over twenty-five years ago
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2394 .[
4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2395 rose romine real work
4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2396 .]
116 4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2397 \(en the community seems not to care.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2398 This is one of several examples that require new users to build up
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2399 their profile before they can access the modern features of nmh.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2400 Without an extensively built-up profile, the setup is hardly usable
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2401 for modern emailing.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2402 The point is not the customization of the setup,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2403 but the activating of generally useful facilities.
112 4e6a9ae1b53c Added a bit of text on modern defaults; plus added code refs. markus schnalke <meillo@marmaro.de> parents: 110 diff changeset	2404 .P
116 4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2405 Yet, the real problem lies less in enabling the features, as this is
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2406 straight forward as soon as one knows what he wants.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2407 The real problem is that new users need deep insights into the project
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2408 before they find out what they are missing and that nmh actually
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2409 provides it already, it just was not activated.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2410 To give an example, I needed one year of using nmh
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2411 before I became aware of the existence of the attachment system.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2412 One could argue that this fact disqualifies my reading of the
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2413 documentation.
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2414 If I would have installed nmh from source back then, I could agree.
116 4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2415 Yet, I had used a prepackaged version and had expected that it would
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2416 just work.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2417 Nevertheless, I had been convinced by the concepts of MH already
116 4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2418 and I am a software developer,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2419 still I required a lot of time to discover the cool features.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2420 How can we expect users to be even more advanced than me,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2421 just to allow them use MH in a convenient and modern way?
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2422 Unless they are strongly convinced of the concepts, they will fail.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2423 I have seen friends of me giving up disappointed
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2424 before they truly used the system,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2425 although they had been motivated in the beginning.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2426 They suffer hard enough to get used to the toolchest approach,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2427 we should spare them further inconveniences.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2428 .P
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2429 Maintaining compatibility for its own sake is for no good.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2430 If any MH implementation would be the back-end of widespread
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2431 email clients with large user bases, compatibility would be more
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2432 important.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2433 Yet, it appears as if this is not the case.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2434 Hence, compatibility is hardly important for technical reasons.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2435 Its importance originates rather from personal reasons.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2436 Nmh's user base is small and old.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2437 Changing the interfaces would cause inconvenience to long-term users of MH.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2438 It would force them to change their many years old MH configurations.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2439 I do understand this aspect, but it keeps new users from using MH.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2440 By sticking to the old users, new users are kept away.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2441 Yet, the future lies in new users.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2442 Hence, mmh invites new users by providing a convenient and modern setup,
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2443 readily usable out-of-the-box.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2444 .P
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2445 In mmh, all modern features are active by default.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2446 In consequence, a setup with a profile that defines only the path to the
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2447 mail storage, is already convenient to use.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2448 Again, Paul Vixie's ``edginess'' appeal supports the direction I took:
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2449 ``the `main branch' should just be modern''.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2450 .[
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2451 paul vixie edginess nmh-workers
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2452 .]
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2453 .P
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2454 Modern features that are active in mmh by default include:
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2455 .BU
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2456 The attachment system (\c
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2457 .Hd Attach ).
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2458 .Ci 8ff284ff9167eff8f5349481529332d59ed913b1
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2459 .BU
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2460 The draft folder facility (\c
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2461 .Fn +drafts ).
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2462 .Ci 337338b404931f06f0db2119c9e145e8ca5a9860
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2463 .BU
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2464 The unseen sequence (`u')
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2465 .Ci c2360569e1d8d3678e294eb7c1354cb8bf7501c1
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2466 and the sequence negation prefix (`!').
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2467 .Ci db74c2bd004b2dc9bf8086a6d8bf773ac051f3cc
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2468 .BU
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2469 Quoting the original message in the reply.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2470 .Ci 67411b1f95d6ec987b4c732459e1ba8a8ac192c6
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2471 .BU
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2472 Forwarding messages using MIME.
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2473 .Ci 6e271608b7b9c23771523f88d23a4d3593010cf1
4fbd14dc5e91 Wrote about modern defaults. markus schnalke <meillo@marmaro.de> parents: 114 diff changeset	2474
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	2475
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2476
14 55ec590cfa07 Wrote about the draft folder. markus schnalke <meillo@marmaro.de> parents: 12 diff changeset	2477
100 6ae7dc4a3a02 Included changes proposed by Lydi. markus schnalke <meillo@marmaro.de> parents: 98 diff changeset	2478 .H1 "Code Style
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	2479 .P
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2480 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	2481 preface of their book:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2482 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2483 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	2484 .], p. x]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2485 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2486 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	2487 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	2488 to cover it first.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2489 .QE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2490 This section covers changes in mmh that were motivated by the desire
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2491 to improve on style.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2492 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	2493 .[
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2494 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	2495 .]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2496
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2497
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2498 .H2 "Style
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2499 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2500 .U3 "Indentation Style
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2501 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2502 Indentation styles are the holy cow of programmers.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2503 Again Kernighan and Pike:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2504 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2505 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	2506 .], p. 10]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2507 .QS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2508 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	2509 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	2510 application.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2511 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	2512 time arguing.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2513 .QE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2514 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2515 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	2516 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	2517 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	2518 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	2519 one tab, one level.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2520 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	2521 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	2522 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	2523 .Pn unexpand
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2524 or
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2525 .Pn entab
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2526 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	2527 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	2528 (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	2529 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	2530 Although reformatting existing code should be avoided, I did it.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2531 I did not waste time arguing; I just did it.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2532 .Ci a485ed478abbd599d8c9aab48934e7a26733ecb1
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2533
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2534 .U3 "Comments
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2535 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2536 Section 1.6 of
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2537 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2538 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	2539 .], p. 23]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2540 demands: ``Don't belabor the obvious.''
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2541 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	2542 .VS
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2543 context_replace(curfolder, folder); /* update current folder */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2544 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	2545 seq_save(mp); /* synchronize message sequences */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2546 folder_free(mp); /* free folder/message structure */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2547 context_save(); /* save the context file */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2548
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2549 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2550
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2551 int c; /* current character */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2552 char cp; / miscellaneous character pointer */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2553
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2554 [...]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2555
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2556 /* NUL-terminate the field */
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2557 *cp = '\0';
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2558 VE
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2559 .Ci 426543622b377fc5d091455cba685e114b6df674
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2560 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2561 The names of the functions explain enough already.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2562
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2563 .U3 "Names
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2564 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2565 Kernighan and Pike suggest:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2566 ``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	2567 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2568 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	2569 .], p. 4]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2570 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	2571 .Fu check_charset()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2572 to
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2573 .Fu is_native_charset() .
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2574 .Ci 8d77b48284c58c135a6b2787e721597346ab056d
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2575 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	2576 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	2577 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	2578 of the charset name.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2579 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2580 More important than using active names is using descriptive names.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2581 Renaming the obscure function
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2582 .Fu m_unknown()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2583 was a delightful event.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2584 .Ci 611d68d19204d7cbf5bd585391249cb5bafca846
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2585 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2586 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	2587 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	2588 ``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	2589 .[ [
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2590 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	2591 .], p. 19]
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2592 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	2593 to be scanned:
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2594 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2595 #define SCN_MBOX (-1)
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2596 #define SCN_FOLD 0
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2597 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2598 .Ci 7ffb36d28e517a6f3a10272056fc127592ab1c19
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2599 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2600 The argument
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2601 .Ar outnum
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2602 of the function
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2603 .Fu scan()
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2604 in
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2605 .Fn uip/scansbr.c
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2606 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	2607 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	2608 program logic.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2609 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	2610 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	2611 .VS
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2612 int incing = (outnum > 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2613 int ismbox = (outnum != 0);
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2614 VE
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2615 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	2616 The variable
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2617 .Ar outnum
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2618 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	2619 .Ci b8b075c77be7794f3ae9ff0e8cedb12b48fd139f
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2620 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	2621 of related code parts.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2622 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	2623 straight forward implementation became apparent.
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2624 Before the clarification was done,
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2625 the possibility to improve had not be seen.
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2626 .Ci aa60b0ab5e804f8befa890c0a6df0e3143ce0723
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2627
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2628 .U3 "Rework of \f(CWanno\fP
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2629 .P
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2630 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	2631 Kernighan and Pike ask: ``But why worry about style?''
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2632 The following example of my rework of
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2633 .Pn anno
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2634 provides an answer why style is important in the first place.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2635 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2636 Until 2002,
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2637 .Pn anno
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2638 had six functional command line switches,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2639 .Sw -component
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2640 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2641 .Sw -text ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2642 which took an argument each,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2643 and the two pairs of flags,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2644 .Sw -[no]date
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2645 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2646 .Sw -[no]inplace.,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2647 .Sw -component
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2648 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2649 .Sw -text ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2650 which took an argument each,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2651 and the two pairs of flags,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2652 .Sw -[no]date
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2653 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2654 .Sw -[no]inplace .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2655 Then Jon Steinhart introduced his attachment system.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2656 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	2657 .Pn anno .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2658 He added five more switches:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2659 .Sw -draft ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2660 .Sw -list ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2661 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2662 .Sw -append ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2663 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2664 .Sw -number ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2665 the last one taking an argument.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2666 .Ci 7480dbc14bc90f2d872d434205c0784704213252
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2667 Later,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2668 .Sw -[no]preserve
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2669 was added.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2670 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2671 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	2672 .Mp anno (1)
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2673 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2674 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2675 anno [+folder] [msgs] [-component field] [-inplace \| -noinplace]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2676 [-date \| -nodate] [-draft] [-append] [-list] [-delete]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2677 [-number [num\|all]] [-preserve \| -nopreserve] [-version]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2678 [-help] [-text body]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2679 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2680 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2681 The implementation followed the same structure.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2682 Problems became visible when
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2683 .Cl "anno -list -number 42
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2684 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	2685 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2686 .Cl "anno -list -number l:5
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	2687 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	2688 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	2689 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	2690 There, the correct use of
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2691 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2692 was defined as being
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2693 .Cl "[-number [num\|all]]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2694 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	2695 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2696 read:
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2697 .QS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2698 The -list option produces a listing of the field bodies for
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2699 header fields with names matching the specified component,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2700 one per line. The listing is numbered, starting at 1, if
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2701 the -number option is also used.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2702 .QE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2703 .LP
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2704 The problem was manifold.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2705 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	2706 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2707 switch.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2708 If it was missing or non-numeric,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2709 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2710 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	2711 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	2712 Semantically, the argument to the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2713 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2714 switch is only necessary in combination with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2715 .Sw -delete ,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2716 but not with
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2717 .Sw -list .
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2718 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	2719 .P
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2720 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	2721 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	2722 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	2723 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	2724 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	2725 to the structure of the problem.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2726 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2727 In 2002, the new switches
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2728 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2729 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2730 .Sw -delete
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2731 were added in the same way, the
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2732 .Sw -number
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2733 switch for instance had been added.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2734 Yet, they are of structural different type.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2735 Semantically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2736 .Sw -list
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2737 and
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2738 .Sw -delete
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2739 introduce modes of operation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2740 Historically,
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2741 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2742 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	2743 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	2744 listing and deleting header fields.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2745 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	2746 fundamental change to
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2747 .Pn anno 's
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2748 behavior.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2749 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	2750 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	2751 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	2752 .Pn anno
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2753 and its documentation.
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2754 .Ci d54c8db8bdf01e8381890f7729bc0ef4a055ea11
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2755 .P
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2756 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	2757 The following code excerpt:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2758 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2759 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	2760 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	2761 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2762 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2763 delete = 0;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2764 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2765 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2766 list = 1;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2767 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2768 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2769 .LP
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2770 was replaced by:
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2771 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2772 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	2773 [...]
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2774 case DELETESW: /* delete annotations */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2775 mode = MODE_DEL;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2776 continue;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2777 case LISTSW: /* produce a listing */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2778 mode = MODE_LIST;
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2779 continue;
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2780 VE
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2781 .LP
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2782 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	2783 it is easier to understand as well.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2784 The same applies to the documentation.
120 e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2785 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	2786 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	2787 .VS
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2788 anno [+folder] [msgs] [-component field] [-text body]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2789 [-append] [-date \| -nodate] [-preserve \| -nopreserve]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2790 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2791
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2792 anno -delete [+folder] [msgs] [-component field] [-text
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2793 body] [-number num \| all ] [-preserve \| -nopreserve]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2794 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2795
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2796 anno -list [+folder] [msgs] [-component field] [-number]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2797 [-Version] [-help]
e49780100ffb Wrote about the rework of anno(1). markus schnalke <meillo@marmaro.de> parents: 118 diff changeset	2798 VE
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2799 .\" 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	2800
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	2801
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	2802
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2803 .H2 "Standard Libraries
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	2804 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2805 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	2806 Hence, MH included own implementations of functions
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2807 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	2808 but were not back then.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2809 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	2810 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	2811 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	2812 can and should be dropped.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2813 Kernighan and Pike advise: ``Use standard libraries.''
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2814 .[ [
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2815 kernighan pike practice of programming
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2816 .], p. 196]
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2817 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	2818 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	2819 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2820 .Fu snprintf()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2821 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	2822 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	2823 In project's own implementation of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2824 .Fu snprintf()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2825 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	2826 standard library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2827 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2828 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	2829 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	2830 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	2831 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2832 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	2833 only half a dozen years.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2834 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	2835 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	2836 I have not suffered from their incompatibilities.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2837 I have not longed for standardization.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2838 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	2839 were well established already.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2840 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	2841 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	2842 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	2843 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	2844 heart from their own experience.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2845 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2846 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	2847 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	2848 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	2849 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	2850 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	2851 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	2852 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	2853 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	2854 .Ci 768b5edd9623b7238e12ec8dfc409b82a1ed9e2d
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2855 .Ci 0052f1024deb0a0a2fc2e5bacf93d45a5a9c9b32 .
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2856 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2857 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	2858 .Fn libmh.a ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2859 which is located in the
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2860 .Fn sbr
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2861 (``subroutines'') directory in the source tree.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2862 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	2863 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	2864 and folder handling, but as well
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2865 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	2866 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	2867 functions of the standard library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2868 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2869 I have replaced the
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2870 .Fu atooi()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2871 function with calls to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2872 .Fu strtoul()
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2873 with the third parameter \(en the base \(en set to eight.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2874 .Fu strtoul()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2875 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	2876 .Ci c490c51b3c0f8871b6953bd0c74551404f840a74
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2877 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2878 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	2879 .Fu memmove()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2880 and
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2881 .Fu strerror() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2882 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	2883 to support SunOS 4.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2884 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	2885 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	2886 put a load on mmh.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2887 .Ci b067ff5c465a5d243ce5a19e562085a9a1a97215
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2888 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2889 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2890 .Fu copy()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2891 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	2892 In contrast to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2893 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2894 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	2895 The code was adjusted to replace
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2896 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2897 with
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2898 .Fu strcpy() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2899 except within
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2900 .Fu concat() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2901 where
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2902 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2903 was more convenient.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2904 Therefore, the definition of
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2905 .Fu copy()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2906 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	2907 .Fu concat()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2908 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	2909 .Ci 552fd7253e5ee9e554c5c7a8248a6322aa4363bb
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2910 .P
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2911 The function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2912 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2913 had been a generalized version of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2914 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2915 with minor differences.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2916 As all calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2917 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2918 had the slash (`/') as delimiter anyway,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2919 replacing
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2920 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2921 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	2922 .Fu basename()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2923 became desirable.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2924 Unfortunately, many of the 54 calls to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2925 .Fu r1bindex()
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2926 depended on a special behavior,
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2927 which differed from the POSIX specification for
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2928 .Fu basename() .
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2929 Hence,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2930 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2931 was kept but renamed to
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2932 .Fu mhbasename() ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2933 fixing the delimiter to the slash.
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2934 .Ci 240013872c392fe644bd4f79382d9f5314b4ea60
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2935 For possible uses of
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2936 .Fu r1bindex()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2937 with a different delimiter,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2938 the ANSI C function
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2939 .Fu strrchr()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2940 provides the core functionality.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2941 .P
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2942 The
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2943 .Fu ssequal()
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2944 function \(en apparently for ``substring equal'' \(en
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2945 was renamed to
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2946 .Fu isprefix() ,
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2947 because this is what it actually checks.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2948 .Ci c20b4fa14515c7ab388ce35411d89a7a92300711
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2949 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	2950 .VS
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2951 /*
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2952 * THIS CODE DOES NOT WORK AS ADVERTISED.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2953 * 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	2954 * 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	2955 * 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	2956 * should be kept if it's sufficient.
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2957 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2958
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2959 /*
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2960 * 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	2961 * 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	2962 */
edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2963 VE
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2964 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	2965 .Fu strncmp() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2966 .Ci b0b1dd37ff515578cf7cba51625189eb34a196cb
121 edbc6e1dc636 New text on Standard Libraries plus spellchecking. markus schnalke <meillo@marmaro.de> parents: 120 diff changeset	2967
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2968
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2969
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2970
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	2971
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2972 .H2 "Modularization
48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	2973 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2974 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	2975 .Fn uip
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2976 (``user interface programs'') directory.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2977 Each tools has a source file with the same name.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2978 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2979 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2980 is built from
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2981 .Fn uip/rmm.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2982 Some source files are used for multiple programs.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2983 For example
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2984 .Fn uip/scansbr.c
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2985 is used for both,
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2986 .Pn scan
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2987 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2988 .Pn inc .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2989 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	2990 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	2991 32 programs depended on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2992 17 programs depended on one source file only.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	2993 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	2994 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	2995 18 programs depend on multiple source files;
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	2996 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	2997 (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	2998 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	2999 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3000 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	3001 increase the readability of its source code.
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3002 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	3003 With the exception of the MIME handling tools,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3004 .Pn pick
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3005 is the largest tools.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3006 It contains 1\\|037 lines of source code (measured with
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3007 .Pn sloccount ), excluding the MH library.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3008 Only the MIME handling tools (\c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3009 .Pn mhbuild ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3010 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3011 .Pn show ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3012 etc.)
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3013 are larger.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3014 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	3015 source files seldom leads to better readability.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3016 For such tools, splitting makes sense
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3017 when parts of the code are reused in other programs,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3018 and the reused code fragment is not general enough
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3019 for including it in the MH library,
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3020 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	3021 .Fn uip/packsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3022 for instance, provides the core program logic for the
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3023 .Pn packf
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3024 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3025 .Pn rcvpack
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3026 programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3027 .Fn uip/packf.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3028 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3029 .Fn uip/rcvpack.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3030 mainly wrap the core function appropriately.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3031 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	3032 As another example,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3033 .Fn uip/termsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3034 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	3035 curses library.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3036 Including
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3037 .Fn uip/termsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3038 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	3039 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	3040 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3041 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	3042 into multiple source files improves the readability.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3043 The program
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3044 .Pn mhstore ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3045 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	3046 lines of code in summary.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3047 The main code file
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3048 .Fn uip/mhstore.c
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3049 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	3050 other MIME handling tools.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3051 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	3052 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	3053 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	3054 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3055 The work already done, focussed on the non-MIME tools.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3056 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	3057 This eases the understanding of the code base.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3058 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3059 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3060 was built from six source files:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3061 .Fn comp.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3062 .Fn whatnowproc.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3063 .Fn whatnowsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3064 .Fn sendsbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3065 .Fn annosbr.c ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3066 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3067 .Fn distsbr.c .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3068 In mmh, it builds from only two:
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3069 .Fn comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3070 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3071 .Fn whatnowproc.c .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3072 In nmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3073 .Pn comp ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3074 the core function of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3075 .Pn whatnow ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3076 .Pn send ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3077 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3078 .Pn anno
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3079 were compiled into
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3080 .Pn comp .
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3081 This saved the need to execute these programs with
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3082 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3083 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3084 .Fu exec() ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3085 two expensive system calls.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3086 Whereis this approach improved the time performance,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3087 it interweaved the source code.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3088 Core functionalities were not encapsulated into programs but into
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3089 function, which were then wrapped by programs.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3090 For example,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3091 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3092 included the function
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3093 .Fu annotate() .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3094 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	3095 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3096 and called
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3097 .Fu annotate() .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3098 Because the function
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3099 .Fu annotate()
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3100 was used like the tool
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3101 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3102 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	3103 When another pair of command line switches was added to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3104 .Pn anno ,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3105 a rather ugly hack was implemented to avoid adding another parameter
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3106 to the function.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3107 .Ci d9b1d57351d104d7ec1a5621f090657dcce8cb7f
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3108 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3109 Separation simplifies the understanding of program code
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3110 because the area influenced by any particular statement is smaller.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3111 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	3112 on the function level.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3113 In mmh, the relevant code of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3114 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3115 comprises the two files
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3116 .Fn uip/comp.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3117 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3118 .Fn uip/whatnowproc.c ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3119 together 210 lines of code.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3120 In nmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3121 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3122 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	3123 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	3124 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3125 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	3126 parts were used.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3127 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3128 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	3129 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	3130 Code is easy to understand if:
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3131 .BU
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3132 The influenced code area is small
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3133 .BU
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3134 The boundaries are strictly defined
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3135 .BU
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3136 The code is written straight-forward
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3137 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3138 .\" XXX move this paragraph somewhere else?
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3139 Reading
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3140 .Pn rmm 's
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3141 source code in
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3142 .Fn uip/rmm.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3143 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	3144 The reasons are that the task of
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3145 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3146 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	3147 yet its source includes code constructs typical for MH tools.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3148 With the introduction of the trash folder in mmh,
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3149 .Pn rmm
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3150 became a bit more complex, because it invokes
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3151 .Pn refile .
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3152 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	3153 .P
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3154 Understanding
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3155 .Pn comp
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3156 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	3157 Due to the aforementioned hack in
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3158 .Pn anno
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3159 to save the additional parameter, information passed through the program's
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3160 source base in obscure ways.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3161 Thus, understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3162 .Pn comp ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3163 required understanding the inner workings of
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3164 .Fn uip/annosbr.c
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3165 first.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3166 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	3167 to be examined.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3168 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	3169 have avoided obscure programming techniques.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3170 By separating the tools on the program-level, the boundaries are
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3171 clearly visible and technically enforced.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3172 The interfaces are calls to
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3173 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3174 rather than arbitrary function calls.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3175 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3176 But the real problem is another:
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3177 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	3178 Understanding
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3179 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3180 requires understanding
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3181 .Fn uip/annosbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3182 and
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3183 .Fn uip/sendsbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3184 because
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3185 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3186 does annotate and send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3187 In nmh, there surely exists the tool
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3188 .Pn send ,
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3189 which does (almost) only send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3190 But
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3191 .Pn comp
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3192 and
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3193 .Pn repl
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3194 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3195 .Pn forw
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3196 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3197 .Pn dist
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3198 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3199 .Pn whatnow
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3200 and
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3201 .Pn viamail ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3202 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	3203 In result,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3204 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3205 sends messages without using
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3206 .Pn send .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3207 The situation is the same as if
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3208 .Pn grep
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3209 would page without
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3210 .Pn more
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3211 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	3212 .P
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3213 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	3214 is violated on the level below.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3215 This violation is for the sake of time performance.
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3216 On systems where
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3217 .Fu fork()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3218 and
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3219 .Fu exec()
c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3220 are expensive, the quicker response might be noticable.
124 3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3221 In the old times, sacrificing readability and conceptional beauty for
3d30fd938aa9 Spellchecking. markus schnalke <meillo@marmaro.de> parents: 123 diff changeset	3222 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	3223 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	3224 No longer should we sacrifice readability or conceptional beauty.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3225 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	3226 guideline.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3227 No longer should we keep speed improvements that became unnecessary.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3228 .P
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3229 Therefore, mmh's
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3230 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3231 does no longer send messages.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3232 In mmh, different jobs are divided among separate programs that
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3233 invoke each other as needed.
123 740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3234 In consequence,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3235 .Pn comp
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3236 invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3237 .Pn whatnow
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3238 which thereafter invokes
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3239 .Pn send .
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3240 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	3241 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	3242 annotations, for example, are made by invoking
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3243 .Pn anno ,
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3244 no matter if requested by programs or by human beings.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3245 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	3246 the decrease of
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3247 .Fn uip/*sbr.c
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3248 files confirm the improvement.
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3249 .P
740f4128dea7 Reworked and extended the text about Modularization. markus schnalke <meillo@marmaro.de> parents: 122 diff changeset	3250 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	3251 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	3252 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	3253 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	3254 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	3255 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	3256 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	3257 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	3258 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	3259 can be developed to allow automated testing at compile time.
122 c234656329e0 Wrote about modularization. markus schnalke <meillo@marmaro.de> parents: 121 diff changeset	3260
102 a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3261
a782488c85f5 More text about attachments mainly, plus some rearrangements. markus schnalke <meillo@marmaro.de> parents: 101 diff changeset	3262
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3263
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3264 .H2 "Separation
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3265
118 48e28eaee6f9 Wrote intro to Modernizing and new text about Code Style. markus schnalke <meillo@marmaro.de> parents: 116 diff changeset	3266 .U3 "MH Directory Split
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	3267 .P
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3268 In MH and nmh, a personal setup had consisted of two parts:
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3269 The MH profile, named
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3270 .Fn \&.mh_profile
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3271 and being located directly in the user's home directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3272 And the MH directory, where all his mail messages and also his personal
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3273 forms, scan formats, other configuration files are stored.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3274 The location
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3275 of this directory could be user-chosen.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3276 The default was to name it
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3277 .Fn Mail
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3278 and have it directly in the home directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3279 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3280 I've never liked the data storage and the configuration to be intermixed.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3281 They are different kinds of data.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3282 One part, are the messages,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3283 which are the data to operate on.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3284 The other part, are the personal
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3285 configuration files, which are able to change the behavior of the operations.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3286 The actual operations are defined in the profile, however.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3287 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3288 When storing data, one should try to group data by its type.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3289 There's sense in the Unix file system hierarchy, where configuration
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3290 file are stored separate (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3291 .Fn /etc )
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3292 to the programs (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3293 .Fn /bin
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3294 and
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3295 .Fn /usr/bin )
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3296 to their sources (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3297 .Fn /usr/src ).
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3298 Such separation eases the backup management, for instance.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3299 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3300 In mmh, I've reorganized the file locations.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3301 Still there are two places:
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3302 There's the mail storage directory, which, like in MH, contains all the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3303 messages, but, unlike in MH, nothing else.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3304 Its location still is user-chosen, with the default name
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3305 .Fn Mail ,
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3306 in the user's home directory.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3307 This is much similar to the case in nmh.
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3308 The configuration files, however, are grouped together in the new directory
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3309 .Fn \&.mmh
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3310 in the user's home directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3311 The user's profile now is a file, named
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3312 .Fn profile ,
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3313 in this mmh directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3314 Consistently, the context file and all the personal forms, scan formats,
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3315 and the like, are also there.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3316 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3317 The naming changed with the relocation.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3318 The directory where everything, except the profile, had been stored (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3319 .Fn $HOME/Mail ),
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3320 used to be called \fIMH directory\fP.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3321 Now, this directory is called the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3322 user's \fImail storage\fP.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3323 The name \fImmh directory\fP is now given to
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3324 the new directory
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3325 (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3326 .Fn $HOME/.mmh ),
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3327 containing all the personal configuration files.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3328 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3329 The separation of the files by type of content is logical and convenient.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3330 There are no functional differences as any possible setup known to me
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3331 can be implemented with both approaches, although likely a bit easier
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3332 with the new approach.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3333 The main goal of the change had been to provide
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3334 sensible storage locations for any type of personal mmh file.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3335 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3336 In order for one user to have multiple MH setups, he can use the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3337 environment variable
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3338 .Ev MH
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3339 the point to a different profile file.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3340 The MH directory (mail storage plus personal configuration files) is
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3341 defined by the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3342 .Pe Path
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3343 profile entry.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3344 The context file could be defined by the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3345 .Pe context
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3346 profile entry or by the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3347 .Ev MHCONTEXT
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3348 environment variable.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3349 The latter is useful to have a distinct context (e.g. current folders)
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3350 in each terminal window, for instance.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3351 In mmh, there are three environment variables now.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3352 .Ev MMH
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3353 may be used to change the location of the mmh directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3354 .Ev MMHP
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3355 and
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3356 .Ev MMHC
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3357 change the profile and context files, respectively.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3358 Besides providing a more consistent feel (which simply is the result
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3359 of being designed anew), the set of personal configuration files can
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3360 be chosen independently from the profile (including mail storage location)
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3361 and context, now.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3362 Being it relevant for practical use or not, it
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3363 de-facto is an improvement.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3364 However, the main achievement is the
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	3365 split between mail storage and personal configuration files.
17 b3c37947764e Several minor text improvements. markus schnalke <meillo@marmaro.de> parents: 16 diff changeset	3366
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	3367
49 d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	3368
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3369
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3370
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3371
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3372
89 83bfb4dbf59f Spellchecked. markus schnalke <meillo@marmaro.de> parents: 88 diff changeset	3373 .H1 "Concept Exploitation/Homogeneity
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3374
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3375
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3376 .H2 "Draft Folder
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3377 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3378 Historically, MH provided exactly one draft message, named
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3379 .Fn draft
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3380 and
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3381 being located in the MH directory.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3382 When starting to compose another message
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3383 before the former one was sent, the user had been questioned whether to use,
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3384 refile or replace the old draft.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3385 Working on multiple drafts at the same time
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3386 was impossible.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3387 One could only work on them in alteration by refiling the
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3388 previous one to some directory and fetching some other one for reediting.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3389 This manual draft management needed to be done each time the user wanted
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3390 to switch between editing one draft to editing another.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3391 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3392 To allow true parallel editing of drafts, in a straight forward way, the
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3393 draft folder facility exists.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3394 It had been introduced already in July 1984
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3395 by Marshall T. Rose.
110 4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	3396 The facility was inactive by default.
4c0f13b1e0e8 Spellchecked. markus schnalke <meillo@marmaro.de> parents: 109 diff changeset	3397 Even in nmh, the draft folder facility remained inactive by default.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3398 At least, Richard Coleman added the man page
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3399 .Mp mh-draft(5)
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3400 to document
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3401 the feature well.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3402 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3403 The only advantage of not using the draft folder facility is the static
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3404 name of the draft file.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3405 This could be an issue for MH front-ends like mh-e.
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3406 But as they likely want to provide working on multiple drafts in parallel,
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3407 the issue is only concerning compatibility.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3408 The aim of nmh to stay compatible
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3409 prevented the default activation of the draft folder facility.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3410 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3411 On the other hand, a draft folder is the much more natural concept than
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3412 a draft message.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3413 MH's mail storage consists of folders and messages,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3414 the messages named with ascending numbers.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3415 A draft message breaks with this
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3416 concept by introducing a message in a file named
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3417 .Fn draft .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3418 This draft
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3419 message is special.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3420 It can not be simply listed with the available tools,
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3421 but instead requires special switches.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3422 I.e. corner-cases were
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3423 introduced.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3424 A draft folder, in contrast, does not introduce such
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3425 corner-cases.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3426 The available tools can operate on the messages within that
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3427 folder like on any messages within any mail folders.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3428 The only difference
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3429 is the fact that the default folder for
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3430 .Pn send
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3431 is the draft folder,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3432 instead of the current folder, like for all other tools.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3433 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3434 The trivial part of the change was activating the draft folder facility
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3435 by default and setting a default name for this folder.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3436 Obviously, I chose
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3437 the name
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3438 .Fn +drafts .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3439 This made the
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3440 .Sw -draftfolder
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3441 and
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3442 .Sw -draftmessage
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3443 switches useless, and I could remove them.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3444 The more difficult but also the part that showed the real improvement,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3445 was updating the tools to the new concept.
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3446 .Sw -draft
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3447 switches could
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3448 be dropped, as operating on a draft message became indistinguishable to
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3449 operating on any other message for the tools.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3450 .Pn comp
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3451 still has its
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3452 .Sw -use
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3453 switch for switching between its two modes: (1) Compose a new
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3454 draft, possibly by taking some existing message as a form.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3455 (2) Modify
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3456 an existing draft.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3457 In either case, the behavior of
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3458 .Pn comp is
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3459 deterministic.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3460 There is no more need to query the user.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3461 I consider this
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3462 a major improvement.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3463 By making
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3464 .Pn send
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3465 simply operate on the current
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3466 message in the draft folder by default, with message and folder both
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3467 overridable by specifying them on the command line, it is now possible
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3468 to send a draft anywhere within the storage by simply specifying its folder
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3469 and name.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3470 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3471 All theses changes converted special cases to regular cases, thus
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3472 simplifying the tools and increasing the flexibility.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3473
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3474
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3475 .H2 "Trash Folder
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3476 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3477 Similar to the situation for drafts is the situation for removed messages.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3478 Historically, a message was deleted by renaming.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3479 A specific
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3480 \fIbackup prefix\fP, often comma (\c
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3481 .Fn , )
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3482 or hash (\c
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3483 .Fn # ),
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3484 being prepended to the file name.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3485 Thus, MH wouldn't recognize the file
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3486 as a message anymore, as only files whose name consists of digits only
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3487 are treated as messages.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3488 The removed messages remained as files in the
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3489 same directory and needed some maintenance job to truly delete them after
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3490 some grace time.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3491 Usually, by running a command similar to
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3492 .VS
ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3493 find /home/user/Mail -ctime +7 -name ',*' \| xargs rm
ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3494 VE
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3495 in a cron job.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3496 Within the grace time interval
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3497 the original message could be restored by stripping the
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3498 the backup prefix from the file name.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3499 If however, the last message of
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3500 a folder is been removed \(en say message
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3501 .Fn 6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3502 becomes file
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3503 .Fn ,6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3504 \(en and a new message enters the same folder, thus the same
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3505 numbered being given again \(en in our case
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3506 .Fn 6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3507 \(en, if that one
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3508 is removed too, then the backup of the former message gets overwritten.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3509 Thus, the ability to restore removed messages does not only depend on
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3510 the ``sweeping cron job'' but also on the removing of further messages.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3511 This is undesirable, because the real mechanism is hidden from the user
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3512 and the consequences of further removals are not always obvious.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3513 Further more, the backup files are scattered within the whole mail
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3514 storage, instead of being collected at one place.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3515 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3516 To improve the situation, the profile entry
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3517 .Pe rmmproc
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3518 (previously named
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3519 .Pe Delete-Prog )
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3520 was introduced, very early.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3521 It could be set to any command, which would care for the mail removal
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3522 instead of taking the default action, described above.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3523 Refiling the to-be-removed files to some garbage folder was a common
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3524 example.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3525 Nmh's man page
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3526 .Mp rmm(1)
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3527 proposes
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3528 .Cl "refile +d
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3529 to move messages to the garbage folder and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3530 .Cl "rm `mhpath +d all`
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3531 the empty the garbage folder.
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3532 Managing the message removal this way is a sane approach.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3533 It keeps
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3534 the removed messages in one place, makes it easy to remove the backup
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3535 files, and, most important, enables the user to use the tools of MH
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3536 itself to operate on the removed messages.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3537 One can
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3538 .Pn scan
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3539 them,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3540 .Pn show
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3541 them, and restore them with
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3542 .Pn refile .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3543 There's no more
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3544 need to use
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3545 .Pn mhpath
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3546 to switch over from MH tools to Unix tools \(en MH can do it all itself.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3547 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3548 This approach matches perfect with the concepts of MH, thus making
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3549 it powerful.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3550 Hence, I made it the default.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3551 And even more, I also
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3552 removed the old backup prefix approach, as it is clearly less powerful.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3553 Keeping unused alternative in the code is a bad choice as they likely
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3554 gather bugs, by not being constantly tested.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3555 Also, the increased code
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3556 size and more conditions crease the maintenance costs.
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3557 By strictly
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3558 converting to the trash folder approach, I simplified the code base.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3559 .Pn rmm
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3560 calls
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3561 .Pn refile
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3562 internally to move the to-be-removed
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3563 message to the trash folder (\c
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3564 .Fn +trash
104 2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3565 by default).
2818ca27d24c Various text rework. markus schnalke <meillo@marmaro.de> parents: 102 diff changeset	3566 Messages
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3567 there can be operated on like on any other message in the storage.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3568 The sweep clean, one can use
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3569 .Cl "rmm -unlink +trash a" ,
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3570 where the
82 ff4537327162 Mayor rework: Replaced .DS with .VS, a better verbatim environment. markus schnalke <meillo@marmaro.de> parents: 78 diff changeset	3571 .Sw -unlink
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3572 switch causes the files to be truly unliked instead
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3573 of moved to the trash folder.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3574
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3575
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3576 .H2 "Path Notations
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3577 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3578 foo
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3579
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3580
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3581 .H2 "MIME Integration
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3582 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3583 user-visible access to whole messages and MIME parts are inherently
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3584 different
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3585
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3586
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3587 .H2 "Of One Cast
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	3588 .P

Mercurial > docs > master

annotate discussion.roff @ 124:3d30fd938aa9