+.TH MHSHOW %manext1% "May 4, 2013" "%nmhversion%"
.\"
.\" %nmhwarning%
-.\" $Id$
.\"
-.TH MHSHOW %manext1% "%nmhdate%" MH.6.8 [%nmhversion%]
.SH NAME
mhshow \- display MIME messages
.SH SYNOPSIS
.PP
.B mhshow
manipulates multi-media messages as specified in
-RFC\-2045 thru RFC\-2049. Currently
+RFC 2045 to RFC 2049. Currently
.B mhshow
only supports
encodings in message bodies, and does not support the encoding of
-message headers as specified in RFC\-2047.
+message headers as specified in RFC 2047.
.PP
By default
.B mhshow
mail drop format to a folder of
.B nmh
messages, see
-.BR inc (1)).
+.IR inc (1)).
.PP
A part specification consists of a series of numbers separated by dots.
For example, in a multipart content containing three parts, these
.PP
A content specification consists of a content type and a subtype.
The initial list of \*(lqstandard\*(rq content types and subtypes can
-be found in RFC\-2046.
+be found in RFC 2046.
.PP
A list of commonly used contents is briefly reproduced here:
.PP
.PP
If a display string is not found,
.B mhshow
-has several default values:
+behaves as if these profile entries were supplied and supported:
.PP
.RS 5
.nf
.fi
.RE
.PP
+Note that \*(lqmoreproc\*(rq is not supported in user profile display
+strings.
+.PP
If a subtype of type text doesn't have a profile entry, it will be
treated as text/plain.
.PP
this content, it checks if your terminal can display this character
set natively.
.B mhn
-checks this by examining the the environment
-variable
-.BR $MM_CHARSET .
-If the value of this environment variable is equal
+checks this by examining the current character set defined by the
+.IR locale (1)
+environment variables.
+If the value of the locale character set is equal
to the value of the charset parameter, then
.B mhshow
assumes it can
-display this content without any additional setup. If this environment
-variable is not set,
+display this content without any additional setup. If the locale is not
+set properly,
.B mhshow
will assume a value of \*(lqUS-ASCII\*(rq.
If the character set cannot be displayed natively, then
and it will get
called automatically. (To handle other single-octet character sets,
look at the
-.BR less (1)
+.IR less (1)
manual entry for information about the
.B $LESSCHARDEF
environment variable.)
You must reassemble them first into a normal message using
.BR mhstore .
Check the man page for
-.BR mhstore (1)
+.IR mhstore (1)
for details.
.SS "External Access"
For contents of type message/external-body,
local-file
.IP \(bu 4
mail-server
+.IP \(bu 4
+url
.PP
For the \*(lqanon-ftp\*(rq and \*(lqftp\*(rq access types,
.B mhshow
The program should terminate with an exit status of zero if the
retrieval is successful, and a non-zero exit status otherwise.
.PP
-If this entry is not provided, then
+For the \*(lqurl\*(rq access\-type,
.B mhshow
-will use a simple
-built-in FTP client to perform the retrieval.
+will look for the \*(lqnmh-access-url\*(rq
+profile entry. See
+.IR mhstore (1)
+for more details.
+.PP
.SS "The Content Cache"
When
.B mhshow
different machines,
.B mhshow
will look for the environment variable
-.BE $MHSHOW .
+.BR $MHSHOW .
If present, this specifies the name of an additional
user profile which should be read. Hence, when a user logs in on a
particular display device, this environment variable should be set to
which is created automatically during
.B nmh
installation.
-
.SH FILES
+.B mhshow
+looks for all format files and 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 %etcdir% \*(rq
+is checked.
+.PP
.fc ^ ~
.nf
.ta \w'%etcdir%/ExtraBigFileName 'u
^%etcdir%/mhn.defaults~^System default MIME profile entries
^%etcdir%/mhl.headers~^The headers template
.fi
-
.SH "PROFILE COMPONENTS"
.fc ^ ~
.nf
^Unseen\-Sequence:~^To name sequences denoting unseen messages
^mhlproc:~^Default program to display message headers
^nmh-access-ftp:~^Program to retrieve contents via FTP
+^nmh-access-url:~^Program to retrieve contents via HTTP
^nmh-cache~^Public directory to store cached external contents
^nmh-private-cache~^Personal directory to store cached external contents
^mhshow-charset-<charset>~^Template for environment to render character sets
^mhshow-show-<type>*~^Template for displaying contents
^moreproc:~^Default program to display text/plain content
.fi
-
.SH "SEE ALSO"
-mhbuild(1), mhl(1), mhlist(1), mhstore(1), sendfiles(1)
-
+.IR mhbuild (1),
+.IR mhl (1),
+.IR mhlist (1),
+.IR mhstore (1),
+.IR sendfiles (1)
.SH DEFAULTS
.nf
.RB ` +folder "' defaults to the current folder"
.RB ` msgs "' defaults to cur"
.RB ` \-nocheck '
-.RB ` \-form mhl.headers '
+.RB ` \-form\ mhl.headers '
.RB ` \-pause '
-.RB ` \-rcache ask '
-.RB ` \-realsize '
+.RB ` \-rcache\ ask '
.RB ` \-noserialonly '
-.RB ` \-noverbose '
-.RB ` \-wcache ask '
+.RB ` \-wcache\ ask '
.fi
-
.SH CONTEXT
If a folder is given, it will become the current folder. The last
message selected will become the current message.
projects / nmh / blobdiff