docs/master: ch03.roff annotate

annotate ch03.roff @ 60:6a92e0208de0

Wrote about the removal of the mail transfer facilities.

author	markus schnalke <meillo@marmaro.de>
date	Fri, 01 Jun 2012 15:33:37 +0200
parents	814c33b96d89
children	24aabbfe5794

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.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	4 It is structured along the goals to achieve. The concrete work done
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	5 is described in the examples of how the general goals were achieved.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	7
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	8
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	9
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	10 .H1 "Stream-lining
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 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	13 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	14 The community around nmh has a similar understanding.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	15 In fundamental difference, I believe that mmh should be a MUA but
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	16 nothing more. I believe that all-in-one mail systems are not the way
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	17 to go. There are excellent specialized MTAs, like Postfix;
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	18 there are specialized MDAs, like Procmail; there are specialized
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	19 MRAs, like Fetchmail. I believe it's best to use them instead of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	20 providing the same function ourselves. Doing something well requires to
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	21 focus on this particular aspect or a small set of aspects. The more
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	22 it is possible to focus, the better the result in this particular
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	23 area will be. The limiting resource in Free Software community development
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	24 usually is human power. If the low development power is even parted
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	25 into multiple development areas, it will hardly be possible to
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	26 compete with the specialists in the various fields. This is even
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	27 increased, given the small community \(en developers and users \(en
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	28 that MH-based mail systems have. In consequence, I believe that the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	29 available resources should be concentrated at the point where MH is
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	30 most unique. This is clearly the MUA part.
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	31 .P
60 6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	32 The goal for mmh was to remove peripheral parts and stream-line
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	33 it for the MUA task.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	34
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	35
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	36 .H2 "Removal of Mail Transfer Facilities
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	37 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	38 In contrast to nmh, which also provides mail submission and mail retrieval
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	39 facilities, mmh is a MUA only.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	40 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	41 The MSA is called ``Message Transfer Service'' (MTS) in nmh.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	42 The facility establishes TCP/IP connections and speaks SMTP to submit
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	43 messages for relay to the outside world.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	44 This part is implemented in the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	45 .Pn post
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	46 command.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	47 Demanded by the changes in
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	48 emailing, this part of nmh required changes in the last years.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	49 Encrypted connections needed to be supported, hence SASL was introduced
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	50 into nmh. This added complexity to the nmh without improving it in
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	51 its core functions. Also, keeping up with recent developments in
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	52 this field needs requires development power and specialists.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	53 Mmh cuts this whole facility off and depends on an external MTA instead.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	54 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	55 .Pn sendmail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	56 command.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	57 Almost any MTA provides a
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	58 .Pn sendmail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	59 command.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	60 It not, any program can be substituted if it reads the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	61 message from the standard input, extracts the recipient addresses
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	62 from the message header and does not conflict
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	63 with sendmail-specific command line arguments.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	64 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	65 To retrieve mail, the
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	66 .Pn inc
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	67 command in nmh has the ability to establish TCP/IP connections
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	68 and speaks POP3 to retrieve mail from remote servers.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	69 As with mail submission, here encrypted connections are required
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	70 today, thus SASL support was added.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	71 As POP3 is superseded by IMAP more and more, support for message
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	72 retrieval through IMAP will become necessary to be added soon.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	73 Mmh has no support for retrieving mail from remote locations.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	74 It depends on an external tool to cover this task.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	75 There are two ways for messages to enter mmh's mail storage:
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	76 Incorporate them with
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	77 .Pn inc
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	78 from the system maildrop, or with
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	79 .Pn rcvstore
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	80 from the standard input.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	81 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	82 In consequence, mmh includes neither networking nor SASL code anymore.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	83 Two large separate functional units are removed.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	84 They account for about XXX lines of code and XXX libraries.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	85 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	86 With the removal of the MSA and MRA, mmh converted from an all-in-one
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	87 mail system to the core: the MUA.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	88 Following the Unix philosophy, it focuses on one job and to do that well.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	89 Now, of course, mmh depends on third-party software.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	90 An external MTA/MSA is required to transfer mail to the outside world;
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	91 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	92 There exist excellent implementations of such software,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	93 which do this specific task likely much better than the internal
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	94 versions of nmh do it. Also, this provides the choice for the best
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	95 suiting one of the available implementation.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	96 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	97 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	98 why not keep the internal version for convenience?
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	99 If this would question the sense in having a fall-back pager in all
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	100 the command line tools, in case
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	101 .Pn more
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	102 or
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	103 .Pn less
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	104 wouldn't be available, the answer is intuitively seen.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	105 Now, an MSA or MRA is clearly more complex than a text pager, but
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	106 still the concept holds: If programs become complex, split them;
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	107 if projects become complex, split them.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	108 Complexity is demanded by the problem to solve. Decades ago,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	109 emailing had been small and simple.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	110 (Remember,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	111 .Pn /bin/mail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	112 had once covered anything there was to email.)
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	113 As the complexity in emailing increased, MH remainded mostly unchanged.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	114 Nontheless, in nmh the POP server, which the original MH had included,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	115 was removed. Now is the time to take one step further and remove
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	116 the MSA and MRA.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	117 Not only does it decrease the code amount of the project,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	118 but more important, it removes the whole field of message transfer
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	119 with all its implications from the project.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	120 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	121 Users of MH are usually able to set up an external MSA and MRA.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	122 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	123 of documentation available.
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	124 .P
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	125 Choices for MSAs range from the full-featured
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	126 .I Postfix
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	127 over mid-size solutions like
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	128 .I masqmail
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	129 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	130 .I dma
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	131 to small forwarders like
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	132 .I ssmtp
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	133 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	134 .I nullmailer .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	135 Choices for MRAs include
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	136 .I fetchmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	137 .I getmail ,
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	138 .I mpop
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	139 and
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	140 .I fdm .
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	141
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	142
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	143
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	144 .H2 "Removal of non-MUA Tools
6a92e0208de0 Wrote about the removal of the mail transfer facilities. markus schnalke <meillo@marmaro.de> parents: 58 diff changeset	145 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	146 Several of nmh's tools were removed from mmh because they didn't
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	147 match the main focus of adding to the MUA's task.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	148 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	149 .Pn conflict
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	150 was removed because it is a mail system maintenance tool.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	151 Besides, it also checks the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	152 .Fn /etc/passwd
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	153 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	154 .Fn /etc/group
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	155 files.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	156 The tool might be useful, but it should not be shipped with mmh.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	157 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	158 .Pn rcvtty
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	159 was removed because its usecase of writing to the user's terminal
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	160 on receiving of mail is hardly wanted today. If users like to be
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	161 informed of new mail, then using the shell's
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	162 .Ev MAILPATH
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	163 variable or different (graphical) notifications are likely more
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	164 appealing. Writing directly to other terminals is hardly ever wanted
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	165 today. If though one wants to have it this way, the standard tool
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	166 .Pn write
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	167 can be used in a way similar to:
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	168 .DS
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	169 scan -file - \| write `id -un`
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	170 .DE
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	171 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	172 When the new attachment system was introduced,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	173 .Pn viamail
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	174 was removed because then
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	175 .Pn forw
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	176 could cover the task itself.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	177 The wrapper program
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	178 .Pn sendfiles
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	179 was rewritten as a shell script to use
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	180 .Pn forw .
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	181 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	182 .Pn msgchk
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	183 was removed as it became hardly useful when POP support was removed.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	184 It is questionable if
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	185 .Pn msgchk
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	186 provides more information than:
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	187 .DS
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	188 ls -l /var/mail/meillo
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	189 .DE
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	190 It does separate between old and new mail, but that's not very
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	191 useful and can be found out with
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	192 .Pn stat (1)
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	193 too. A very small shell script could care for the form of output.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	194 As mmh's inc only incorporates mail from the user's local maildrop
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	195 and thus no long data transfers are involved,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	196 there's no need to check for new mail before incorporating it.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	197 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	198 .Pn msh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	199 was removed because the tool was in conflict with the original
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	200 philosophy of MH. It provided an interactive shell to access the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	201 features of MH. One major feature of MH is being a tool chest.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	202 .Pn msh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	203 wouldn't be just another shell, tailored to the needs of mail
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	204 handling, but one large program to have the MH tools built in.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	205 It's main use was for accessing Bulletin Boards, which have seized to
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	206 be popular. Removing
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	207 .Pn msh ,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	208 together with the truly obsolete programs
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	209 .Pn vmh
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	210 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	211 .Pn wmh ,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	212 saved more than 7\\|000 lines of C code \(en a major achievement.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	213
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	214
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	215 .H2 "mhshow show Merge
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	216 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	217 Since the very beginning, already in the first concept paper,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	218 .Pn show
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	219 had been MH's mail display program.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	220 .Pn show
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	221 found out which pathnames the relevant messages had and invoked
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	222 .Pn mhl
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	223 then to let it render the content.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	224 With the advent of MIME, this approach wasn't sufficient anymore.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	225 MIME messages can consist of multiple parts, some of which aren't
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	226 directly displayable, and text content can be encoded in
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	227 foreign charsets.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	228 .Pn show 's
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	229 simple approach and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	230 .Pn mhl 's
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	231 limited display facilities couldn't cope with the task any longer.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	232 Instead of extending these tools, new ones were written from scratch
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	233 and then added to the MH tool chest. Doing so is encouraged by the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	234 tool chest approach. The new tools could be added without interfering
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	235 with the existing ones. This is great. It allowed MH to be the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	236 first MUA to implement MIME.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	237 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	238 The new MIME features were added in form of the single program
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	239 .Pn mhn .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	240 The command
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	241 .DS
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	242 mhn \-show 42
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	243 .DE
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	244 would show the MIME message numbered 42.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	245 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	246 the split of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	247 .Pn mhn
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	248 into a set of specialized programs, which together covered the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	249 aspects of MIME. One of these resulting tools was
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	250 .Pn mhshow .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	251
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	252
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	253 .H2 "Removal of Configure Options
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	254 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	255
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	256 .H2 "Removal of switches
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	257 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	258
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	259
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	260
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	261
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	262 .H1 "Moderizing
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	263
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	264
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	265 .H2 "Removal of Code Relicts
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	266 .P
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	267 The code base of mmh originates from the late Seventies,
49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	268 had been extensively
49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	269 worked on in the mid Eighties, and had been partly reorganized and extended
49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	270 in the Nineties. Relicts of all those times had gathered in the code base.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	271 My goal was to remove any ancient code parts. One part of the task was
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	272 converting obsolete code constructs to standard constructs, the other part
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	273 was dropping obsolete functions.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	274 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	275 As I'm not even thirty years old and have no more than seven years of
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	276 Unix experience, I needed to learn about the history in retrospective.
49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	277 Older people likely have used those ancient constructs themselves
49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	278 and have suffered from their incompatibilities and have longed for
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	279 standardization. Unfortunately, I have only read that others had done so.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	280 This put me in a much more difficult positions when working on the old
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	281 code. I needed to recherche what other would have known by heart from
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	282 experience. All my programming experience comes from a time past ANSI C
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	283 and past POSIX. Although I knew about the times before, I took the
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	284 current state implicitly for granted most of the time.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	285 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	286 Being aware of
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	287 these facts, I rather let people with more historic experience solve the
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	288 task of converting the ancient code constructs to standardized ones.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	289 Luckily, Lyndon Nerenberg focused on this task at the nmh project.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	290 He converted large parts of the code to POSIX constructs, removing
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	291 the conditionals compilation for now standardized features.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	292 I'm thankful for this task being solved. I only pulled the changes into
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	293 mmh.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	294 .P
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	295 The other task \(en dropping ancient functionality to remove old code \(en
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	296 I did myself, though. My position to strip mmh to the bare minimum of
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	297 frequently used features is much more revolutional than the nmh community
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	298 likes it. Without the need to justify my decisions, I was able to quickly
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	299 remove functionality I considered ancient.
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	300 The need to discuss my decisions with
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	301 peers likely would have slowed this process down. Of course, I researched
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	302 if a particular feature really should be dropped. Having not had any
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	303 contact to this feature within my computer life was a first indicator to
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	304 drop it, but I also asked others and searched the literature for modern
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	305 usage of the feature. If it appeared to be truly ancient, I dropped it.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	306 The reason for dropping is always part of the commit message in the
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	307 version control system. Thus, it is easy for others to check their
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	308 view on the topic with mine and possibly to argue for reinclusion.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	309
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	310 .U2 "MMDF maildrop support
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	311 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	312 I did drop any support for the MMDF maildrop format. This type of format
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	313 is conceptionally similar to the mbox format, but uses four bytes with
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	314 value 1 (\fL^A^A^A^A\fP) as message delimiter,
18 db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	315 instead of the string ``\fLFrom\ \fP''.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	316 Due to the similarity and mbox being the de-facto standard maildrop
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	317 format on Unix, but also due to the larger influence of Sendmail than MMDF,
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	318 the MMDF maildrop format had vanished.
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	319 .P
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	320 The simplifications within the code were only moderate. Switches could
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	321 be removed from tools like
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	322 .L packf ,
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	323 which generate packed mailboxes. Only one packed mailbox format remained:
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	324 mbox.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	325 The most important changes affect the equally named mail parsing routine in
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	326 .L sbr/m_getfld.c .
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	327 The direct MMDF code had been removed, but as now only one packed mailbox
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	328 format is left, code structure simplifications are likely possible.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	329 The reason why they are still outstanding is the heavily optimized code
18 db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	330 of
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	331 .Fu m_getfld() .
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	332 Changes beyond a small local scope \(en
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	333 which restructuring in its core is \(en cause a high risk of damaging
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	334 the intricate workings of the optimized code. This problem is know
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	335 to the developers of nmh, too. They also avoid touching this minefield
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	336 if possible.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	337
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	338 .U2 "UUCP Bang Paths
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	339 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	340 More questionably than the former topic is the removal of support for the
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	341 UUCP bang path address style. However, the user may translate the bang
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	342 paths on retrieval to Internet addresses and the other way on posting
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	343 messages. The former can be done my an MDA like procmail; the latter
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	344 by a sendmail wrapper. This would ensure that any address handling would
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	345 work as expected. However, it might just work well without any
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	346 such modifications, as mmh does not touch addresses much, in general.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	347 But I can't ensure as I have never used an environment with bang paths.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	348 Also, the behavior might break at any point in further development.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	349
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	350 .U2 "Hardcopy terminal support
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	351 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	352 More of a funny anecdote is the remaining of a check for printing to a
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	353 hardcopy terminal until Spring 2012, when I finally removed it.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	354 I surely would be very happy to see such a terminal in action, maybe
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	355 actually being able to work on it, but I fear my chances are null.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	356 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	357 The check only prevented a pager to be placed between the outputting
18 db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	358 program (\c
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	359 .Pn mhl )
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	360 and the terminal. This could have been ensured with
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	361 the
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	362 .Sw \-nomoreproc
db3567c9cc3f style: Added format macros for files, functions, switches, etc. markus schnalke <meillo@marmaro.de> parents: 17 diff changeset	363 at the command line statically, too.
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	364
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	365 .U2 "Removed support for header fields
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	366 .P
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	367 The `Encrypted' header had been introduced by RFC\^822, but already
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	368 marked legacy in RFC 2822. It was superseded by FIXME.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	369 Mmh does no more support this header.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	370 .P
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	371 Native support for `Face' headers
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	372 had been removed, as well.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	373 The feature is similar to the `X-Face' header in its intent,
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	374 but takes a different approach to store the image.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	375 Instead of encoding the image data directly into the header,
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	376 the the header contains the hostname and UDP port where the image
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	377 date could be retrieved.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	378 Neither `X-Face' nor the here described `Face' system
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	379 \**
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	380 .FS
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	381 There is also a newer but different system, invented 2005,
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	382 using `Face' headers.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	383 It is the successor of `X-Face' providing colored PNG images.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	384 .FE
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	385 became well used in the large scale.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	386 It's still possible to use a Face systems,
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	387 although mmh does not provide support for any of the different systems
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	388 anymore. It's fairly easy to write a small shell script to
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	389 extract the embedded or fetch the external Face data and display the image.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	390 Own Face headers can be added into the draft template files.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	391 .P
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	392 `Content-MD5' headers were introduced by RFC\^1864. They provide only
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	393 a verification of data corruption during the transfer. By no means can
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	394 they ensure verbatim end-to-end delivery of the contents. This is clearly
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	395 stated in the RFC. The proper approach to provide verificationability
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	396 of content in an end-to-end relationship is the use of digital cryptography
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	397 (RFCs FIXME). On the other hand, transfer protocols should ensure the
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	398 integrity of the transmission. In combinations these two approaches
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	399 make the `Content-MD5' header field useless. In consequence, I removed
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	400 the support for it. By this removal, MD5 computation is not needed
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	401 anywhere in mmh. Hence, over 500 lines of code were removed by this one
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	402 change. Even if the `Content-MD5' header field is useful sometimes,
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	403 I value its usefulnes less than the improvement in maintainability, caused
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	404 by the removal.
7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	405
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	406 .U2 "Prompter's Control Keys
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	407 .P
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	408 The program
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	409 .Pn prompter
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	410 queries the user to fill in a message form. When used by
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	411 .Pn comp
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	412 as:
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	413 .DS
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	414 comp \-editor prompter
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	415 .DE
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	416 the resulting behavior is similar to
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	417 .Pn mailx .
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	418 Apparently,
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	419 .Pn prompter
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	420 hadn't been touched lately. Otherwise it's hardly explainable why it
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	421 still offered the switches
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	422 .Sn \-erase \fUchr\fP
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	423 and
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	424 .Sn \-kill \fUchr\fP
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	425 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	426 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	427 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	428 with the standard tool
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	429 .Pn stty .
7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	430
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	431 .U2 "Vfork and Retry Loops
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	432 .P
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	433 MH creates many processes, which is a consequence of the tool chest approach.
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	434 In earlier times
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	435 .Fu fork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	436 had been an expensive system call, as the process's whole image needed
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	437 to be duplicated. One common case is replacing the image with
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	438 .Fu exec()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	439 right after having forked the child process.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	440 To speed up this case, the
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	441 .Fu vfork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	442 system call was invented at Berkeley. It completely omits copying the
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	443 image. If the image gets replaced right afterwards then unnecessary
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	444 work is omited. On old systems this results in large speed ups.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	445 MH uses
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	446 .Fu vfork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	447 whenever possible.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	448 .P
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	449 Memory management units that support copy-on-write semantics make
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	450 .Fu fork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	451 almost as fast as
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	452 .Fu vfork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	453 in the cases when they can be exchanged.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	454 With
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	455 .Fu vfork()
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	456 being more error-prone and hardly faster, it's preferable to simply
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	457 use
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	458 .Fu fork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	459 instead.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	460 .P
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	461 Related to the costs of
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	462 .Fu fork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	463 is the probability of its success.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	464 Today on modern systems, the system call will succeed almost always.
51 49cf68506b5d Spell checking. markus schnalke <meillo@marmaro.de> parents: 49 diff changeset	465 In the Eighties on heavy loaded systems, as they were common at
21 bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	466 universities, this had been different. Thus, many of the
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	467 .Fu fork()
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	468 calls were wrapped into loops to retry to fork several times in
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	469 short intervals, in case of previous failure.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	470 In mmh, the program aborts at once if the fork failed.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	471 The user can reexecute the command then. This is expected to be a
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	472 very rare case on modern systems, especially personal ones, which are
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	473 common today.
bb8a8be49024 Wrote about Face support and vfork(). markus schnalke <meillo@marmaro.de> parents: 20 diff changeset	474
12 7ca384d68edc Wrote some text for removal of old code. markus schnalke <meillo@marmaro.de> parents: 0 diff changeset	475
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	476 .H2 "Attachments
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	477 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	478 MIME
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	479
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	480
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	481 .H2 "Digital Cryptography
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	482 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	483 Signing and encryption.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	484
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	485
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	486 .H2 "Good Defaults
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	487 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	488 foo
22 99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	489
99409e4546d2 Wrote about the removal of tools. markus schnalke <meillo@marmaro.de> parents: 21 diff changeset	490
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	491
14 55ec590cfa07 Wrote about the draft folder. markus schnalke <meillo@marmaro.de> parents: 12 diff changeset	492
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	493 .H1 "Code style
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	494 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	495 foo
16 81f703140554 Wrote about the trash folder. markus schnalke <meillo@marmaro.de> parents: 14 diff changeset	496
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	497
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	498 .H2 "Standard Code
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	499 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	500 POSIX
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	501
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	502
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	503 .H2 "Separation
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	504
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	505 .U2 "MH Directory Split
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	506 .P
19 ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	507 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	508 The MH profile, named
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	509 .Fn \&.mh_profile
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	510 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	511 And the MH directory, where all his mail messages and also his personal
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	512 forms, scan formats, other configuration files are stored. The location
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	513 of this directory could be user-chosen. The default was to name it
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	514 .Fn Mail
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	515 and have it directly in the home directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	516 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	517 I've never liked the data storage and the configuration to be intermixed.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	518 They are different kinds of data. One part, are the messages,
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	519 which are the data to operate on. The other part, are the personal
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	520 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	521 The actual operations are defined in the profile, however.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	522 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	523 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	524 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	525 file are stored separate (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	526 .Fn /etc )
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	527 to the programs (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	528 .Fn /bin
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	529 and
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	530 .Fn /usr/bin )
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	531 to their sources (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	532 .Fn /usr/src ).
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	533 Such separation eases the backup management, for instance.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	534 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	535 In mmh, I've reorganized the file locations.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	536 Still there are two places:
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	537 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	538 messages, but, unlike in MH, nothing else.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	539 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	540 .Fn Mail ,
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	541 in the user's home directory. This is much similar to the case in nmh.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	542 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	543 .Fn \&.mmh
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	544 in the user's home directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	545 The user's profile now is a file, named
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	546 .Fn profile ,
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	547 in this mmh directory.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	548 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	549 and the like, are also there.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	550 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	551 The naming changed with the relocation.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	552 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	553 .Fn $HOME/Mail ),
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	554 used to be called \fIMH directory\fP. Now, this directory is called the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	555 user's \fImail storage\fP. The name \fImmh directory\fP is now given to
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	556 the new directory
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	557 (\c
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	558 .Fn $HOME/.mmh ),
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	559 containing all the personal configuration files.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	560 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	561 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	562 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	563 can be implemented with both approaches, although likely a bit easier
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	564 with the new approach. The main goal of the change had been to provide
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	565 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	566 .P
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	567 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	568 environment variable
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	569 .Ev MH
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	570 the point to a different profile file.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	571 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	572 defined by the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	573 .Pe Path
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	574 profile entry.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	575 The context file could be defined by the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	576 .Pe context
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	577 profile entry or by the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	578 .Ev MHCONTEXT
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	579 environment variable.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	580 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	581 in each terminal window, for instance.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	582 In mmh, there are three environment variables now.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	583 .Ev MMH
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	584 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	585 .Ev MMHP
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	586 and
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	587 .Ev MMHC
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	588 change the profile and context files, respectively.
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	589 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	590 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	591 be chosen independently from the profile (including mail storage location)
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	592 and context, now. Being it relevant for practical use or not, it
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	593 de-facto is an improvement. However, the main achievement is the
ab5253e48c74 Wrote about the directory split. markus schnalke <meillo@marmaro.de> parents: 18 diff changeset	594 split between mail storage and personal configuration files.
17 b3c37947764e Several minor text improvements. markus schnalke <meillo@marmaro.de> parents: 16 diff changeset	595
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	596
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	597 .H2 "Modularization
20 7a100c80fa91 Some new text (show/mhshow; prompter). markus schnalke <meillo@marmaro.de> parents: 19 diff changeset	598 .P
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	599 whatnowproc
0 dc2bfef4cda7 Initial commit: Basic structure, macros and fonts. markus schnalke <meillo@marmaro.de> parents: diff changeset	600 .P
49 d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	601 The \fIMH library\fP
d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	602 .Fn libmh.a
d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	603 collects a bunch of standard functions that many of the MH tools need,
d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	604 like reading the profile or context files.
d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	605 This doesn't hurt the separation.
d3a02f5e63b3 Various rework. markus schnalke <meillo@marmaro.de> parents: 23 diff changeset	606
58 814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	607
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	608 .H2 "Style
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	609 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	610 Code layout, goto, ...
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	611
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	612
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	613
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	614
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	615 .H1 "Concept Exploitation/Homogeniety
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	616
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	617
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	618 .H2 "Draft Folder
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	619 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	620 Historically, MH provided exactly one draft message, named
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	621 .Fn draft
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	622 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	623 being located in the MH directory. When starting to compose another message
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	624 before the former one was sent, the user had been questioned whether to use,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	625 refile or replace the old draft. Working on multiple drafts at the same time
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	626 was impossible. One could only work on them in alteration by refiling the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	627 previous one to some directory and fetching some other one for reediting.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	628 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	629 to switch between editing one draft to editing another.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	630 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	631 To allow true parallel editing of drafts, in a straight forward way, the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	632 draft folder facility exists. It had been introduced already in July 1984
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	633 by Marshall T. Rose. The facility was deactivated by default.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	634 Even in nmh, the draft folder facility remained deactivated by default.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	635 At least, Richard Coleman added the man page
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	636 .Mp mh-draft(5)
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	637 to document
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	638 the feature well.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	639 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	640 The only advantage of not using the draft folder facility is the static
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	641 name of the draft file. This could be an issue for MH frontends like mh-e.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	642 But as they likely want to provide working on multiple drafts in parallel,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	643 the issue is only concerning compatibility. The aim of nmh to stay compatible
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	644 prevented the default activation of the draft folder facility.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	645 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	646 On the other hand, a draft folder is the much more natural concept than
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	647 a draft message. MH's mail storage consists of folders and messages,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	648 the messages named with ascending numbers. A draft message breaks with this
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	649 concept by introducing a message in a file named
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	650 .Fn draft .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	651 This draft
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	652 message is special. It can not be simply listed with the available tools,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	653 but instead requires special switches. I.e. corner-cases were
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	654 introduced. A draft folder, in contrast, does not introduce such
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	655 corner-cases. The available tools can operate on the messages within that
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	656 folder like on any messages within any mail folders. The only difference
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	657 is the fact that the default folder for
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	658 .Pn send
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	659 is the draft folder,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	660 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	661 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	662 The trivial part of the change was activating the draft folder facility
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	663 by default and setting a default name for this folder. Obviously, I chose
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	664 the name
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	665 .Fn +drafts .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	666 This made the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	667 .Sw \-draftfolder
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	668 and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	669 .Sw \-draftmessage
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	670 switches useless, and I could remove them.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	671 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	672 was updating the tools to the new concept.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	673 .Sw \-draft
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	674 switches could
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	675 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	676 operating on any other message for the tools.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	677 .Pn comp
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	678 still has its
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	679 .Sw \-use
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	680 switch for switching between its two modes: (1) Compose a new
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	681 draft, possibly by taking some existing message as a form. (2) Modify
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	682 an existing draft. In either case, the behavior of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	683 .Pn comp is
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	684 deterministic. There is no more need to query the user. I consider this
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	685 a major improvement. By making
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	686 .Pn send
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	687 simply operate on the current
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	688 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	689 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	690 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	691 and name.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	692 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	693 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	694 simplifying the tools and increasing the flexibility.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	695
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	696
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	697 .H2 "Trash Folder
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	698 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	699 Similar to the situation for drafts is the situation for removed messages.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	700 Historically, a message was deleted by renaming. A specific
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	701 \fIbackup prefix\fP, often comma (\c
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	702 .Fn , )
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	703 or hash (\c
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	704 .Fn # ),
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	705 being prepended to the file name. Thus, MH wouldn't recognize the file
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	706 as a message anymore, as only files whose name consists of digits only
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	707 are treated as messages. The removed messages remained as files in the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	708 same directory and needed some maintenance job to truly delete them after
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	709 some grace time. Usually, by running a command similar to
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	710 .DS
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	711 find /home/user/Mail \-ctime +7 \-name ',*' \| xargs rm
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	712 .DE
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	713 in a cron job. Within the grace time interval
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	714 the original message could be restored by stripping the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	715 the backup prefix from the file name. If however, the last message of
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	716 a folder is been removed \(en say message
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	717 .Fn 6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	718 becomes file
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	719 .Fn ,6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	720 \(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	721 numbered being given again \(en in our case
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	722 .Fn 6
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	723 \(en, if that one
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	724 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	725 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	726 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	727 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	728 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	729 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	730 storage, instead of being collected at one place.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	731 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	732 To improve the situation, the profile entry
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	733 .Pe rmmproc
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	734 (previously named
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	735 .Pe Delete-Prog )
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	736 was introduced, very early.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	737 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	738 instead of taking the default action, described above.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	739 Refiling the to-be-removed files to some garbage folder was a common
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	740 example. Nmh's man page
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	741 .Mp rmm(1)
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	742 proposes
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	743 .Cl "refile +d
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	744 to move messages to the garbage folder and
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	745 .Cl "rm `mhpath +d all`
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	746 the empty the garbage folder.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	747 Managing the message removal this way is a sane approach. It keeps
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	748 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	749 files, and, most important, enables the user to use the tools of MH
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	750 itself to operate on the removed messages. One can
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	751 .Pn scan
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	752 them,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	753 .Pn show
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	754 them, and restore them with
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	755 .Pn refile .
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	756 There's no more
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	757 need to use
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	758 .Pn mhpath
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	759 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	760 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	761 This approach matches perfect with the concepts of MH, thus making
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	762 it powerful. Hence, I made it the default. And even more, I also
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	763 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	764 Keeping unused alternative in the code is a bad choice as they likely
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	765 gather bugs, by not being constantly tested. Also, the increased code
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	766 size and more conditions crease the maintenance costs. By strictly
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	767 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	768 .Pn rmm
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	769 calls
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	770 .Pn refile
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	771 internally to move the to-be-removed
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	772 message to the trash folder (\c
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	773 .Fn +trash
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	774 by default). Messages
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	775 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	776 The sweep clean, one can use
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	777 .Cl "rmm \-unlink +trash a" ,
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	778 where the
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	779 .Sw \-unlink
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	780 switch causes the files to be truly unliked instead
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	781 of moved to the trash folder.
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	782
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	783
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	784 .H2 "Path Notations
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	785 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	786 foo
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	787
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	788
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	789 .H2 "MIME Integration
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	790 .P
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	791 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	792 different
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	793
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	794
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	795 .H2 "Of One Cast
814c33b96d89 Restructured the content in ch03. markus schnalke <meillo@marmaro.de> parents: 51 diff changeset	796 .P

Mercurial > docs > master

annotate ch03.roff @ 60:6a92e0208de0