mh-changes.ms

早期freebsd实现

.IP MPOP
Mobile POP (see above).
.IP MSGID
Enables \fIslocal\fP to detect and surpress duplicate messages.
.IP OSF1
Support for DEC OSF1 systems.  May be incomplete.
.IP RENAME
Include this option if your system has a \fIrename\fP\|()
system call.
.IP SVR4
Support for System 5 Release 4 or newer systems.
.IP TYPESIG
This option has been dropped.  See `signal' above.
.IP UNISTD
Include this option if your system has the include
file \fB<unistd.h>\fP.
.IP VSPRINTF
Include this option if your system has the \fIvsprintf\fP\|()
library routine; otherwise, \fI\(rudoprnt\fP\|() will be used.
.IP YEARMOD
Forces the \fImh-format\fP `year' function to
return 2-digit values.
Use this option during a brief transition period if 
you have local \fImh-format\fP files which need to
be converted to support 4-digit years.
.SH 
FUNCTIONAL CHANGES
.LP
In addition to the configuration changes mentioned above,
a number of functional changes have been made to the system.
Many programs have new features added and a few new 
programs have are provided.  
Each command's manual page gives
complete information about the its operation.
Here is a short summary of the changes.
.SH
MH Sequences
.LP
A larger number of user-defined sequences are available.
Previously, this number had been 10.
On 32-bit systems, 26 user-defined sequences are available.
.SH
Profile Components
.LP
\fIMH\fP programs will now complain if the 
\fB\&.mh\(ruprofile\fR does not end in a newline.
Also, one enhancement and one new profile component are provided:
.IP Aliasfile: \w'AliasfileX'u+2n
Multiple filenames may now be given.
.IP Inbox:
New; the default folder (for \fIinc\fP, etc.) if not \*(lqinbox\*(rq.
.KS
.SH
Format Strings
.LP
A few minor bugs were fixed in format string handling,
and a few new features were added.  See \fImh-format\fP\|(5)
for complete details.
.IP Addresses \w'Xxyearxdatexx'u+2n
An attempt is made to decipher X\&.400 RFC\ 987-style addresses.
.IP Comments
Comments may be added to \fImh-format\fP files; a comment
begins with the 2-character sequence \*(lq%;\*(rq,
and ends with an un-escaped newline.
.IP "%(modulo n)"
The `modulo' function escape has been added.
.IP %(year{date})
The date parser has been enhanced to understand more
illegal date formats; `year' now returns a 4-digit number.
.KE
.SH
User Interface Programs
.LP
A number of \fIMH\fP commands have minor changes:
.IP ali \w'packmbox'u+2n
The output with `\-user\0\-list' was
changed to match the output with `\-nouser\0\-list'.
.IP burst
Will no longer drop the last message of a digest.
.IP inc
Accepts the `\-apop' switch for authenticated POP (see above);
will attempt to detect write
errors (e.g., no space left on device) when incorporating mail;
no longer replaces newline characters with NULLs.
.IP folder
The `\-noprint' option was broken and has been dropped.
.IP forw
Supports `\-mime' to use MIME-style multi-part messages.
.IP mhl
Will no longer put an extra space at the end of the
`%{text}' in a formatfield.
.IP mhn
New; manipulates multi-media (MIME) messages; a detailed
man page is provided.
.IP mhparam
New; reads the \fIMH\fP profile (and context) 
and writes the values of the specified components on the
standard output; useful in programmatic constructs.
.IP msgchk
Supports `\-apop' (see above).
.IP packmbox
New; packs an \fIMH\fP folder into a UUCP-style mailbox.
.IP popi
New; a client-side POP initiator; available only if you
built \fIMH\fP with the MPOP option (see above).
.IP refile
A bug where the `rmmproc' did not remove all specified
message files has been fixed.
.IP scan
The `\-file' option is fully supported and will no longer
complain about empty folders.
.IP send
Supports `\-mime' and `\-split' to split large messages
into multiple partial messages using MIME.
.SH
Support Programs
.IP fmtdump \w'packmbox'u+2n
Can now read a format file, or a format string given
on the command line.
.IP popauth
New; manages the APOP authorization database (see above).
.IP sendmail
The \fIsendmail\fP replacement will be installed
only if your `mts' setting uses the `/smtp' option.
.IP slocal
A new man page for \fIslocal\fP is available;
the new `mbox' action is available to write a file
in \fIpackf\fP format;
a bug where extra `>' characters were written to MMDF-style
maildrops has been fixed; 
if compiled with the MSGID option, can detect and suppress
reception of duplicate messages.
.IP viamail
New; bundles a directory (like \fIshar\fP\|) and
sends it through multi-media mail.

.ds LH Changes for MH 6.7.2
.bp
.ds CF Feb 1, 1992
.SH
CHANGES FOR MH 6.7.2
.LP
The MH.6.7.2 patch release is a maintenance
release.
This is the
current released version of \fIMH\fP as of February 1, 1992.
.PP
This release now supports the NCR Tower running SYS5R4.
The WP changes installed in MH.6.7.0 have been removed.
.SH 
Shared Libraries
.LP
Support for SYS 5 shared libraries is in progress.
.PP
Support for Sun OS 4.0 shared libraries had been improved.
The \fIMH\fP library has been modified to move initialized
data into a data definition file.  The shared library will
now consist of a \fBlibmh.so\fP and \fBlibmh.sa\fP file.
The shared library version number will no longer track the
\fIMH\fP patch release number, and its numbering begins with
version `1.1' with this release.
.SH
Replacement SendMail
.LP
Since many standard system programs expect to post mail by 
invoking \fB/usr/lib/sendmail\fP,
a minimal replacement \fISendMail\fP is provided in 
this release.  This replacement is meant to be installed
on (e.g., diskless) client workstations which post mail
using SMTP, and do not run a message transport system.
It will call \fIpost\fP to post mail; be sure you have
configured \fIMH\fP with the `/smtp' mts option.
This sendmail replacement is installed in your 
\fIMH\fP etc directory, and you should link 
\fB/usr/lib/sendmail\fP
to it.
.KS
.SH
Format Strings
.LP
A manual page for the \fIfmtdump\fP format string disassembler
is supplied, and some new format functions were added:
.IP folder \w'%getenv'u+2n
In \fIscan\fP, this component escape
contains the name of the current folder.
It is not defined for other \fIMH\fP commands.
.IP getenv
This function escape returns the value of an environment variable.
.KE
.PP
There will be some additional changes in these routines in the
next patch release.
.KS
.SH
Other Bug Fixes and Enhancements
.LP
In addition to some other minor enhancements,
some bugs were fixed which in general were not user\-visible:
.IP "Blind lists" \w'datexparsing'u+2n
Users may now specify RFC822 address groups in their
alias files.  These groups are implemented by \fIMH\fP 
as blind lists.
.IP "date parsing"
A number of sites have brain-damaged versions of \fBlex\fP.
\fIMH\fP will now come with the date parser already run
through lex.
.IP mark
A bug dealing with \fImark\fP and the sequence named `cur'
is fixed.  This was previously a problem for mh-e users.
.IP MH.doc
The \fIMH\fP nroff version of the manual no longer contains
teletype escape sequences.
.IP scan
Can now handle headers as long as 512 bytes.
.IP Signals
\fIMH\fP programs will no longer catch the \fBHUP\fP
and \fBTERM\fP signals while waiting for a sub-process.
This was causing hung processes when your terminal line was
was dropped unexpectedly.
.IP Signature
If your signature is not defined, \fIMH\fP will 
use the value of the gecos field of your \fB/etc/passwd\fP
entry as your signature.
.IP "version.sh"
A bug in the \fBawk\fP script in \fBconfig/version.sh\fP 
was fixed.
.KE
.ds LH Changes for MH 6.7.1a
.bp
.ds CF January 25, 1991
.SH 
CHANGES FOR MH 6.7.1a
.LP
The MH.6.7.1a patch was made available 
on January 25, 1991 for limited distribution only.
(This release had some known bugs, and so was
not widely distributed.)
This release incorporates several new features
of particular note to users of sequences and format strings,
as well as some general documentation improvements.
There are a few minor enhancements and internal bug fixes also.
Complete documentation of these changes is given in
the individual manual pages, and the \fBREAD-ME\fP file.
.SH
Message Sequences
.LP
A new manual page, \fImh\-sequence\0\fP(5), has been added.
This manual page attempts to completely document the
syntax and semantics of \fIMH\fP message sequence specifications.
.PP
A powerful new feature is the ability to specify message
ranges with user-defined sequences.  The  specification
\*(lqname:n\*(rq may be used, and it designates up to the
first `n' messages (or  last  `n' messages  for  `-n')
which  are  elements  of the user-defined sequence `name'.
.PP
The message
specifications \*(lqname:next\*(rq and \*(lqname:prev\*(rq
may also be used, and they
designate the
next or previous message (relative to the current message)
which is an element of the user-defined sequence `name'.
The specifications
\*(lqname:first\*(rq and \*(lqname:last\*(rq are equivalent
to \*(lqname:1\*(rq and \*(lqname:\-1\*(rq, respectively.
The specification \*(lqname:cur\*(rq is not allowed
(use just \*(lqcur\*(rq instead).
.PP
These specifications allow the user to step through
a sequence with a command like \*(lqshow name:next\*(rq.
.SH
Format Strings
.LP
\fIMH\fP format strings now support an if-then-elseif-else
clause (the `elseif' is new).  This will make
format strings with multi-case conditions somewhat less complex.
.PP
A new format function `addr' had been added.  This function
takes an address header name as its argument, and returns
a rendering of the address contained in that header
as \*(lquser@host\*(rq or \*(lqhost!user\*(rq.
.PP
Format widths now may be specified as a negative number.
This causes the output to be right-justified
within the format width.
.KS
.SH
Other Changes
.LP
Along with a few minor enhancements,
some bugs were fixed which in general were not user-visible:
.IP "fmtdump" \w'whatnow'u+2n
This new program 
produces an pseudo-language
representation of an \fIMH\fP format file, vaguely
reminiscent of assembly language.  While this output format
is not explicitly documented,
it can still be useful when debugging \fIMH\fP format files.
.IP "refile"
Now takes a `\-\[no\]rmmproc' switch.  This makes it
easier to avoid loops when your \*(lqrmmproc\*(rq calls \fIrefile\fP.
.IP "slocal"
A problem with the UUCP-style mailboxes,
the `RPATHS' configuration option,
and the \*(lqReturn-Path:\*(rq header was fixed.
.IP "sortm"
Will ensure that no messages are lost if it is interrupted.
.IP "whatnow"
Will now tell you where it is leaving the draft, when
interrupted in the initial edit.  Previously the draft 
was simply unlinked.
.KE
.KS
.SH
Compilation Options
.IP "LOCKF" \w'whatnow'u+2n
This option causes \fIMH\fP to use the \fBlockf()\fP
system call for locking (if available),
instead of \fBflock()\fP.
.KE
.ds LH Changes for MH 6.7.1
.bp
.ds CF December 14, 1990
.SH 
CHANGES FOR MH 6.7.1
.LP
The MH.6.7.1 patch release is a maintenance
release, and as such, provides few changes from 
the previous release.  This is the
current released version of \fIMH\fP as of December 14, 1990.
.SH
User-Visible Changes
.LP
The major change in this release is to the
POP daemon (popd).  In \fIMH\fP 6.7,
it was changed to be able to read both UUCP and
MMDF-style mailboxes.  This did not work as reported.  The
code has now been changed to parse MMDF-style mailboxes if
you are configuring MH to run with MMDF as your message
transport system.  Otherwise, UUCP-style mailboxes are
expected.
.PP
Since there are number of client programs available for
only the POP2 protocol instead of POP3, popd has been
updated to support both protocols.  This is a major
win.  If you are compiling
with POP turned on, add the `POP2' option to
your \fIMH\fP config file, and the POP daemon
will respond to POP2 or POP3 commands.  If you're using
POP, there's no reason not to include this option; it does
not affect the existing support for POP3.
.KS
.SH
Internal Changes
.LP
Some bugs were fixed which in general were not user-visible:
.IP "context" \w'replnnetcn'u+2n
Errors when writing out sequences are detected correctly.
.IP "inc"
No longer inserts extra blank lines into messages.
.IP "mh-format"
A nil pointer bug in the address parser was fixed.
.IP "repl, etc."
The malloc/free problem has been fixed.
.IP "rmf"
A spelling error in the `\-nointeractive' switch has been corrected.
.IP "rcvtty"
Will not print the message size if not available (i.e., zero).
.IP "send/post"
Illegal signatures (those containing unquoted "."s) will be quoted.
.KE
.ds LH Changes for MH 6.7.0
.bp
.ds CF April 12, 1990
.SH
GENERAL CHANGES FOR MH 6.7.0
.LP