X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/ebd71fa45bb0538e65e3106de57a04ae6c70abae..ba8b265a8211b2052b424dc9bd7ea391a8ded87a:/man/mhfixmsg.man?ds=sidebyside diff --git a/man/mhfixmsg.man b/man/mhfixmsg.man index bb80a28f..84245661 100644 --- a/man/mhfixmsg.man +++ b/man/mhfixmsg.man @@ -1,4 +1,4 @@ -.TH MHFIXMSG %manext1% "March 18, 2013" "%nmhversion%" +.TH MHFIXMSG %manext1% "February 8, 2015" "%nmhversion%" .\" .\" %nmhwarning% .\" @@ -9,23 +9,28 @@ mhfixmsg \- rewrite MIME messages with various transformations .na .B mhfixmsg .RI [ +folder ] -.RI [ msgs ] +.RI [ msgs " | " +.IR "absolute pathname" " | " +.RB \-file +.IR file ] .RB [ \-decodetext 8bit/7bit | .BR \-nodecodetext ] -.RB [ \-textcodeset -.I codeset -.RB "| " \-notextcodeset ] +.RB [ \-textcharset +.I charset +.RB "| " \-notextcharset ] .RB [ \-reformat " | " \-noreformat ] +.RB [ \-replacetextplain " | " \-noreplacetextplain ] .RB [ \-fixboundary " | " \-nofixboundary ] .RB [ \-fixcte " | " \-nofixcte ] -.RB [ \-file -.IR file ] +.RB [ \-fixtype +.IR mimetype ] .RB [ \-outfile .IR outfile ] .RB [ \-rmmproc .IR program ] .RB [ \-normmproc ] +.RB [ \-changecur " | " \-nochangecur ] .RB [ \-verbose " | " \-noverbose ] .RB [ \-version ] .RB [ \-help ] @@ -36,7 +41,7 @@ rewrites MIME messages, applying specific transformations such as decoding of MIME-encoded message parts and repairing invalid MIME headers. .PP -MIME messages are specified in RFC\-2045 to RFC\-2049 +MIME messages are specified in RFC 2045 to RFC 2049 (see .IR mhbuild (1)). The @@ -52,18 +57,34 @@ The .B \-decodetext switch enables a transformation to decode each base64 and quoted-printable text message part to the selected 8bit or 7bit -encoding. If the decoded text would not fit the selected encoding as -defined by RFC-2045, the part is not decoded. +encoding. If 7bit is selected for a base64 part but it will only fit +8bit, as defined by RFC 2045, then it will be decoded to 8bit +quoted-printable. Otherwise, if the decoded text would not fit the +selected encoding, the part is not decoded (and a message will be +displayed if +.B \-verbose +is enabled). +.PP +When the +.B \-decodetext +switch is enabled, each carriage return character that precedes a +linefeed character is removed from text parts encoded in ASCII, +ISO-8859-x, UTF-8, or Windows-12xx. .PP The -.B \-textcodeset +.B \-textcharset switch specifies that all text/plain parts of the message(s) should be converted to -.IR codeset . -Codeset conversions require that +.IR charset . +Charset conversions require that .B nmh be built with -.IR iconv (3). +.IR iconv (3); +see the +.BR mhparam (1) +man page for how determine whether your +.B nmh +installation includes that. To convert text parts other than text/plain, an external program can be used, via the .B \-reformat @@ -83,6 +104,27 @@ inserts that text/plain part at the beginning of the containing multipart/alternative part, if present. If not, it creates a multipart/alternative part. .PP +With the +.B \-reformat +switch, multipart/related parts are handled differently than +multipart/alternative. If the multipart/related has only a single +part that is not text/plain and can be converted to text/plain, a +text/plain part is added and the type of the part is changed to +multipart/alternative. If the multipart/related has more than one +part but does not have a text/plain part, +.B mhfixmsg +tries to add one. +.PP +The +.B \-replacetextplain +switch broadens the applicability of +.B \-reformat +by always replacing a corresponding text/plain part, if one exists. +If +.B \-verbose +if enabled, the replacement will be shown as two steps: a removal of +the text/plain part followed by the usual insertion of a new part. +.PP .B \-reformat requires a profile entry for each text part subtype to be reformatted. The mhfixmsg-format-text/subtype profile entries are based on external @@ -92,7 +134,7 @@ uses its mhshow-show-text/subtype entries. When .B nmh is installed, it searches for a conversion program for text/html content, and if one is found, inserts a mhfixmsg-format-text/html -entry in %etcdir%/mhn.defaults. An entry of the same name in the +entry in %nmhetcdir%/mhn.defaults. An entry of the same name in the user's profile takes precedence. The user can add entries for other text subtypes to their profile. .PP @@ -121,11 +163,35 @@ and other programs that parse MIME messages. .PP The +.B \-fixtype +switch ensures that each part of the message has the correct MIME type +shown in its Content-Type header. It may be repeated. It is +typically used to replace \*(lqapplication/octet-stream\*(rq with a +more descriptive MIME type. It may not be used for multipart and +message types. +.PP +.B mhfixmsg +applies one transformation unconditionally: it removes an extraneous +trailing semicolon from the parameter lists of MIME header fields. +.PP +The .B \-verbose switch directs .B mhfixmsg to output informational message for each transformation applied. .PP +The return status of +.B mhfixmsg +is 0 if all of the requested transformations are performed, or +non-zero otherwise. +.RB ( mhfixmsg +will not decode to binary content, but a request to do so is +not considered a failure, and is noted with +.BR \-verbose .) +If a problem is detected with any one of multiple messages such that +the return status is non-zero, then none of the messages will be +modified. +.PP The .B \-file .I file @@ -133,7 +199,12 @@ switch directs .B mhfixmsg to use the specified file as the source message, rather than a message from a folder. -If this file is \*(lq-\*(rq, then +Only one file argument may be provided. The +.B \-file +switch is implied if +.I file +is an absolute pathname. +If the file is \*(lq-\*(rq, then .B mhfixmsg accepts the source message on the standard input stream. If the @@ -175,7 +246,7 @@ to add a single transformed message to a different folder, e.g., .RS 5 mhfixmsg -outfile - | \\ .RS 0 -%libdir%/rcvstore +folder +%nmhlibexecdir%/rcvstore +folder .RE .RE .SS Summary of Applicability @@ -186,10 +257,11 @@ content type and/or encoding as follows: .nf .ta \w'\-fixboundary 'u \-decodetext base64 and quoted-printable encoded text parts -\-textcodeset text/plain parts +\-textcharset text/plain parts \-reformat text parts that are not text/plain \-fixboundary outermost multipart part \-fixcte multipart part +\-fixtype all except multipart and message parts .fi .RE .PP @@ -216,6 +288,31 @@ profile component and negates all prior .B \-rmmproc switches. .PP +.SS "Integration with inc" +.B mhfixmsg +can be used as an add-hook, as described in %docdir%/README-HOOKS. +Note that add-hooks are called from all +.B nmh +programs that add a message to a folder, not just +.BR inc . +Alternatively, a simple shell alias or function can be used to +call +.B mhfixmsg +immediately after a successful invocation of +.BR inc . +One approach could be based on: +.PP +.RS 5 +msgs=`inc -format '%(msg)'` && [ -n "$msgs" ] && scan $msgs && \ +mhfixmsg -nochangecur $msgs +.RE +.PP +Another approach would rely on adding a sequence to Unseen-Sequence, +which +.B inc +sets with the newly incorporated messages. Those could then be +supplied to +.BR mhfixmsg . .SS "Integration with procmail" By way of example, here is an excerpt from a procmailrc file that filters messages through @@ -225,11 +322,9 @@ before storing them in the user's folder. It also stores the incoming message in the .I Backups folder in a filename generated by -.BR mktemp , +.BR mkstemp , which is a non-POSIX utility to generate a temporary file. -If you do not have that utility, then the -.BR mkstemp (3) -function could form the basis for a substitute. Or, +Alternatively, .B mhfixmsg could be called on the message after it is stored. .PP @@ -238,22 +333,32 @@ could be called on the message after it is stored. .ta \w'\-fixboundary 'u PATH = %bindir%:$PATH MAILDIR = `mhparam path` -MKTEMP = 'mktemp Backups/mhfixmsg.XXXXXXXX' +#### The Backups directory is relative to MAILDIR. +MKSTEMP = 'mkstemp -directory Backups -prefix mhfixmsg' MHFIXMSG = 'mhfixmsg -noverbose -file - -outfile -' -STORE = %libdir%/rcvstore +STORE = %nmhlibexecdir%/rcvstore -:0 w: nmh-worker/procmail.$LOCKEXT +:0 w: nmh-workers/procmail.$LOCKEXT * ^TOnmh-workers@nongnu.org -| tee `$MKTEMP` | $MHFIXMSG | $STORE +nmh-workers +| tee `$MKSTEMP` | $MHFIXMSG | $STORE +nmh-workers .fi .RE .PP .SH FILES +.B mhfixmsg +looks for mhn.defaults in multiple locations: absolute pathnames are +accessed directly, tilde expansion is done on usernames, and files are +searched for in the user's +.I Mail +directory as specified in their profile. If not found there, the directory +.RI \*(lq %nmhetcdir% \*(rq +is checked. +.PP .fc ^ ~ .nf -.ta \w'%etcdir%/mhn.defaults 'u +.ta \w'%nmhetcdir%/mhn.defaults 'u ^$HOME/\&.mh\(ruprofile~^The user profile -^%etcdir%/mhn.defaults~^Default mhfixmsg conversion entries +^%nmhetcdir%/mhn.defaults~^Default mhfixmsg conversion entries .fi .SH "PROFILE COMPONENTS" .fc ^ ~ @@ -265,11 +370,14 @@ STORE = %libdir%/rcvstore ^rmmproc:~^Program to delete original messages or files .fi .SH "SEE ALSO" +.IR inc (1), +.IR iconv (3), .IR mh-profile (5), .IR mhbuild (1), .IR mhlist (1), +.IR mhparam (1), .IR mhshow (1), -.IR mkstemp (3), +.IR mh-mkstemp (1), .IR procmail (1), .IR procmailrc (5), .IR rcvstore (1), @@ -279,15 +387,20 @@ STORE = %libdir%/rcvstore .RB ` +folder "' defaults to the current folder" .RB ` msgs "' defaults to cur" .RB ` "\-decodetext 8bit"' -.RB ` \-notextcodeset ' +.RB ` \-notextcharset ' .RB ` \-reformat ' +.RB ` \-noreplacetextplain ' .RB ` \-fixboundary ' .RB ` \-fixcte ' +.RB ` \-changecur ' .RB ` \-noverbose ' .fi .SH CONTEXT If a folder is given, it will become the current folder. The last -message selected from a folder will become the current message. If +message selected from a folder will become the current message, unless the +.B \-nochangecur +switch is enabled. If the .B \-file -switch is used, the context will not be modified. +switch or an absolute pathname is used, the context will not be +modified.