1 [NOTE: This file is out-of-date. Updating it every time new features are added
2 to nmh forevermore is a pain. Perhaps we should limit it to
3 documentation of _incompatibilities_ with MH (which should be rare).]
5 The following are the differences between nmh and MH-6.8.3. UCI has
6 since released MH-6.8.4. Most of the new features it adds have
7 also been added to nmh, but those differences are not listed here.
8 There are a few new features in MH-6.8.4 that are missing from nmh,
9 but they are primarily undocumented in MH-6.8.4 (and no one has
10 ever asked me for them).
14 *) nmh has been converted to autoconf (configure) and should be
15 more portable and easier to install than MH. In particular, nmh
16 will now compile on Linux.
17 *) All of MH's Makefiles have been rewritten for nmh. You can now
18 use GNU make without any problems. Also, if your make supports
19 the VPATH variable (such as GNU make), you can now compile in a
20 different directory from the one containing the source code.
21 *) The source code for nmh has been substantially cleaned up.
22 It now requires an ANSI C compiler (gcc is fine) to compile.
23 *) A new option `-version' has been added to all the commands.
24 *) The POP server (popd) has been removed from the distribution.
25 RPOP on the client side is not currently supported.
26 *) The support for MH-style bulletin boards has been removed
27 (NNTP makes this obsolete anyway).
28 *) Currently nmh doesn't support using shared libraries for libmh.
29 This may return in the future, but is not a high priority, since
30 the nmh commands are not that large, and disk space gets cheaper
32 *) Almost all of the commands in nmh have been modified to accept
33 an arbitrary number of command line arguments (most MH commands
34 will not accept more than 1000 arguments on the command line).
35 *) nmh should be more secure than MH. Hundreds of buffer overflow
36 problems have been fixed in the source code. Of course, I still
37 don't make any guarantees.
41 *) Many of the man pages have been cleaned up or clarified.
42 *) The mhook man page has been split into separate man pages for
43 rcvtty, rcvdist, and rcvpack.
44 *) Added new man page `mh-draft' which discusses the nmh draft
46 *) The various `procs' (rmmproc, moreproc, showmimeproc, etc...)
47 are now documented in the "mh-profile" man page. Many of these
48 were previously undocumented.
52 *) Added a new formatting string escape %(decode) to decode and
53 display RFC-2047 encoded header fields.
57 *) The is no longer a limitation on the length of lines in the file
58 containing your public sequences (.mh_sequences). That should be
59 the end of the error message ".mh_sequences is poorly formatted".
63 *) The switch -inplace is now on by default.
67 *) Conflict now works on systems that define more
72 *) The switch -inplace is now on by default.
76 *) A new command `flist' has been added to nmh, that will list the
77 folders that contain messages in a given sequence (such as the
78 unseen sequence). This was a much needed command in the MH suite
83 *) `folder -all' now dynamically allocates space for folder names and can
84 handle more than 300 folders.
85 *) `folder' now uses the standard Unix trick of looking at the number of
86 links to a directory entry, in order to avoid doing a stat(2) call
87 on messages in folders with no subfolders. This greatly increases
88 the speed of `folder -all -recurse' on large mail setups.
89 *) The switches `-header' and `-total' are more orthogonal. The command
90 `folder -all -noheader -nototal' now does the right thing.
94 *) The switch -inplace is now on by default.
95 *) Added switches `-dashstuffing' and `-nodashstuffing', to determine
96 whether forwarded messages are RFC934 quotes (dashstuffed).
97 (This corresponds to the undocumented switch "nodashmunging"
102 *) If compiled with RPATHS, a Delivery-Date header is now added to all
103 messages incorporated with `inc'.
104 *) Using the new format string escape %(decode), the scan lines for `inc'
105 will correctly decode RFC-2047 encoded headers.
109 *) If neither of the switches -public/-nopublic are specified, then
110 existing sequences will retain their current public/private status,
111 instead of being changed to public.
112 *) The command "mark -list -sequence foo" will now indicate if the
113 sequence "foo" is a private sequence.
117 *) The functionality in `mhn' to create MIME messages, has been cleaned
118 up substantially, and moved to separate command `mhbuild'.
119 *) If given a file argument of "-", mhbuild will now accept the MIME
120 composition file on the standard input, and output the new MIME
121 message to the standard output. This makes it much easier to use
122 this functionality in shell scripts.
123 *) The switch -norfc934mode is now the default.
127 *) There is a new variable "decode" which instructs `mhl' to decode
128 a component as a RFC-2047 encoded header field.
132 *) The functionality of `mhn -list' has been moved to the new
137 *) mhn is now obsolete. It has been split into the commands mhbuild,
138 mhlist, mhshow, mhstore, and viamail. mhn still exists for
139 backward compatibility, but the new commands should be preferred.
140 *) Changed the profile entry automhnproc to automimeproc
141 (which has slightly different semantics).
145 *) `mhpath all' will no longer abort if the folder has more than
150 *) The functionality of `mhn -show' has been moved to the new
152 *) mhshow now correctly treats unknown subtypes of text as
153 text/plain, as specified by RFC-2046.
154 *) mhshow now correctly treats unknown subtypes of multipart as
155 multipart/mixed, as specified by RFC-2046.
156 *) You can now override the default method by which mhshow handles
157 subtypes of multipart that are known internally (mixed, alternate,
158 etc...). Previously the behavior on these types could not be
163 *) The functionality of `mhn -store' has been moved to the new
165 *) mhstore will now correctly identify a formatting string of "-"
166 and send the content to stdout.
170 *) When packing a folder, the default format is now `mbox' format, rather
171 than `mmdf' format. The options -mbox and -mmdf have been added to
172 `packf' so you can choose the desired format.
176 *) The script packmbox has been removed from the nmh distribution, since
177 its functionality has been added to the command packf.
181 *) If neither of the switches -public/-nopublic are specified, then
182 existing sequences will retain their current public/private status,
183 instead of being changed to public.
187 *) The default format for `rcvpack' is now `mbox' format, rather than
188 `mmdf' format. The options -mbox and -mmdf have been added to
189 `rcvpack' so you can choose the desired format.
190 *) Rcvpack no longer adds the field "Delivery-Date", as that is added
195 *) Added new switches -unseen/-nounseen to control whether new messages
196 are added to the Unseen-Sequence.
200 *) The option `-width' has been added.
204 *) If an conflict occurs when using the `-preserve' switch,
205 then refile will search for and use the next available
206 message number above the one you wish to preserve, rather
207 than aborting with an error.
208 *) Added new options `-unlink' and `-nounlink' which specify
209 that that messages "removed" from the source folder should
210 just be unlinked, rather than moved to name with prefix.
214 *) Added new options `-format' and `-noformat'. The switch `-format'
215 will filter the message to which you are replying with a standard
216 message filter "mhl.reply" which is included in the distribution.
217 The switch `-noformat' will negate `-format' and `-filter', so that
218 the message to which you are replying is not included in the draft.
219 *) Added new options `-group' and `-nogroup'. These switches direct
220 repl as to whether or not this is a group reply. A group reply uses
221 a different forms (components) file (default is replgroupcomps).
222 *) The standard forms files "replcomps" and "replgroupcomps" now have
223 support for the "Mail-Reply-To:" and "Mail-Followup-To:" header fields.
224 *) The switch -inplace is now on by default.
228 *) Added new options `-unlink' and `-nounlink' which specify
229 that that "removed" messages should just be unlinked, rather
230 than moved to name with prefix.
234 *) Using the new format string escape %(decode), the scan lines created
235 by `scan' will correctly decode RFC-2047 encoded headers.
239 *) Added new options `-checkmime' and `-nocheckmime' which allow you
240 to enable and disable the test for MIME messages.
241 *) The "mhnproc" profile entry has been changed to "showmimeproc".
242 *) Added `-showmimeproc' switch to specify the showmimeproc at the
244 *) The default "showproc" has been changed to `mhl'.
245 *) The default "showmimeproc" is now `mhshow'.
246 *) `show' is better at handling alternate character sets. It knows that
247 US-ASCII is a subset of any ISO-8859-X character set.
251 *) Added new action `folder' or `+' to slocal, which adds new message
252 to a nmh folder. Currently, this is handled by piping the new
253 message to rcvstore, although this may change in the future.
254 *) The action `mbox' now delivers to a file in mbox format. Previously
255 it delivered to a file in mmdf format.
256 *) Added new action `mmdf' to deliver to a file in mmdf format.
257 *) Added new options -[no]suppressdup to slocal to check for duplicate
258 messages. The code for suppression of duplicate messages (MH config
259 was MSGID) is now always built into slocal.
260 *) Improved the debugging of slocal ".maildelivery" files. It will now
261 warn when an entry in this file is skipped because there are not
262 enough fields. Also the debugging output of slocal has been cleaned up,
263 so that it is much easier to read.
264 *) Slocal now adds the Delivery-Date header to all delivered messages.
265 Previously it only added them to messages delivered to a file.
269 *) The functionality of this new command, was formerly part of
270 `mhn' as the (undocumented) option `mhn -viamail'.
274 *) Added new action "mime" to whatnow, which causes whatnow to call
275 program specified by "buildmimeproc" profile entry, to process
276 MIME composition files (default is mhbuild).
277 *) Added new action "delete" to whatnow, which deletes draft file
projects / mmh / blob