-.TH MHLIST %manext1% "August 20, 2014" "%nmhversion%"
+.TH MHLIST %manext1% "February 6, 2015" "%nmhversion%"
.\"
.\" %nmhwarning%
.\"
.RB [ \-type
.IR content ]
\&...
+.RB [ \-prefer
+.IR content ]
+\&...
.RB [ \-headers " | " \-noheaders ]
.RB [ \-realsize " | " \-norealsize ]
.RB [ \-rcache
.B mhlist
will list information about the entire
message (all of its parts). By using the
-.B \-part
+.BR \-part ,
+.BR \-type ,
and
-.B \-type
-switches, you may limit the scope of this command to particular
-subparts (of a multipart content) and/or particular content types.
-.PP
-A part specification consists of a series of numbers separated by dots.
-For example, in a multipart content containing three parts, these
-would be named as 1, 2, and 3, respectively. If part 2 was also a
-multipart content containing two parts, these would be named as 2.1 and
-2.2, respectively. Note that the
+.B \-prefer
+switches, you may limit and reorder the set of parts to be listed,
+based on part number and/or content type.
+.PP
+A part specification consists of a series of numbers separated by
+dots. For example, in a multipart content containing three parts,
+these would be named as 1, 2, and 3, respectively. If part 2 was also
+a multipart content containing two parts, these would be named as 2.1
+and 2.2, respectively. Note that the
.B \-part
-switch is effective for only
-messages containing a multipart content. If a message has some other
-kind of content, or if the part is itself another multipart content, the
+switch is effective for only messages containing a multipart content.
+If a message has some other kind of content, or if the part is itself
+another multipart content, the
.B \-part
switch will not prevent the content from being acted upon.
.PP
+The
+.B \-type
+switch can also be used to restrict (or, when used in conjunction with
+.BR \-part ,
+to further restrict) the selection of parts according to content type.
+One or more
+.B \-type
+switches part will only select the first match
+from a multipart/alternative, even if there is more than one
+subpart that matches (one of) the given content type(s).
+.PP
+Using either
+.B \-part
+or
+.B -type
+switches alone will cause either to select
+the part(s) they match. Using them together will select only
+the part(s) matched by both (sets of) switches. In other
+words, the result is the intersection, and not the union, of their
+separate match results.
+.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 used twice: once for message/external-body and once for the content
externally referenced.
.PP
-The parts of a multipart/alternative part are listed in the reverse
-order of their placement in the message. The listing therefore is
-in decreasing order of preference, as defined in RFC 2046.
+By default, the parts of a multipart/alternative part are listed in
+the reverse order of their placement in the message. The listing
+therefore is in decreasing order of preference, as defined in RFC
+2046. The
+.B \-prefer
+switch can be used (one or more times, in order of descending
+preference) to let MH know which content types from a
+multipart/alternative MIME part are preferred by the user, in order to
+override the default preference order. Thus, when viewed by
+.BR mhlist ,
+the ordering of multipart/alternative parts will appear to change when
+invoked with or without various
+.B \-prefer
+switches.
+The
+.B \-prefer
+switch is functionally most important for
+.IR mhshow ,
+but is also implemented in
+.B mhlist
+and
+.B mhstore
+to make common part numbering possible across all three programs.
.SS "Checking the Contents"
The
.B \-check
.SH FILES
.fc ^ ~
.nf
-.ta \w'%etcdir%/ExtraBigFileName 'u
+.ta \w'%nmhetcdir%/ExtraBigFileName 'u
^$HOME/\&.mh\(ruprofile~^The user profile
.fi
.SH "PROFILE COMPONENTS"
projects / nmh / blobdiff