.\" .\" %nmhwarning% .\" $Id$ .\" .\" include the -mh macro file .so %etcdir%/tmac.h .\" .TH SHOW %manext1% MH.6.8 [%nmhversion%] .SH NAME show \- show (display) messages .SH SYNOPSIS .in +.5i .ti -.5i show \%[+folder] \%[msgs] \%[\-showproc\ program] .br \%[\-showmimeproc\ program] \%[\-header] \%[\-noheader] .br \%[\-draft] \%[\-checkmime] \%[\-nocheckmime] .br \%[switches\ for\ \fIshowproc\fR or \fIshowmimeproc\fR] .br \%[\-version] \%[\-help] .in -.5i .SH DESCRIPTION \fIShow\fR lists each of the specified messages to the standard output (typically, the terminal). By default, text (non-MIME) messages are filtered and displayed by the \fInmh\fR command \fImhl\fR. This command will display text messages in a nice, uniform format. It also allows you to configure the format of the displayed messages and which headers fields are shown. See the \fImhl\fR(1) manual page for the details about this command. This default can be changed by defining the \fIshowproc\fR profile component. Any switches not recognized by \fIshow\fR are passed along to that program. To override the default and the \fIshowproc\fR profile component, use the `\-showproc\ program' switch. For example, `\-showproc\ more' will cause the \fImore\fR(1) program to list the messages with no reformatting. Normally, this program is specified as the \fIshowproc\fR in the user's \&.mh\(ruprofile, rather than using a command line switch. By default, non-text messages (MIME messages with multi-media contents) are processed and displayed by the \fInmh\fR command \fImhshow\fR. See the \fImhshow\fR(1) manual page for details about this command. This default can changed by defining the \fIshowmimeproc\fR profile component. Any switches not recognized by \fIshow\fR are passed along to that program. To override this default and the \fIshowmimeproc\fR profile component, use the `\-showmimeproc\ program' switch. Note that in some cases, \fIshow\fR may invoke the \fIshowmimeproc\fR even for textual contents. This will happen for text messages that specify a transfer encoding (such as MIME quoted-printable or base64) or specify a character set that \fIshow\fR doesn't believe can be displayed natively. The environment variable MM_CHARSET should be set to the terminal's native character set to avoid gratuitous invocations of the \fIshowmimeproc\fR. See the mh-profile(5) man page for details about this environment variable. The option `\-checkmime' (set by default) instructs \fIshow\fR to test if any of the messages to be displayed are non-text (MIME) messages. If any are non-text, they are displayed by the program \fIshowmimeproc\fR, else they are displayed by the program \fIshowproc\fR. The option `-nocheckmime' disables this test and instructs \fIshow\fR to use \fIshowproc\fR, regardless of whether any of the messages are non-text (MIME) messages. The `\-noshowproc' switch will disable any formatting or paging of messages. It is equivalent to `-nocheckmime\ -showproc\ cat'. It is still accepted, but should be considered (somewhat) obsolete. If the environment variable \fBNOMHNPROC\fR is set, the test for non-text (MIME) messages will be disabled. This method is obsolete. Use the `-nocheckmime' switch instead. The `\-header' switch tells \fIshow\fR to display a one\-line description of the message being shown. This description includes the folder and the message number. If no `msgs' are specified, the current message is used. Although it depends on the specific \fIshowproc\fR or \fIshowmimeproc\fR, in the default setup when more than one message is specified, you will be prompted for a prior to listing each message. Each message will be listed a page at a time, and when the end of page is reached, the program will wait for a or . If a is entered, it will print the next line, whereas will print the next screenful. If the standard output is not a terminal, no queries are made, and each file is listed with a one\-line header and two lines of separation. \*(lqshow \-draft\*(rq will list the file /draft if it exists. If the profile entry \*(lqUnseen\-Sequence\*(rq is present and non\-empty, then \fIshow\fR will remove each of the messages shown from each sequence named by the profile entry. .Fi ^$HOME/\&.mh\(ruprofile~^The user profile .Pr ^Path:~^To determine the user's nmh directory .Ps ^Current\-Folder:~^To find the default current folder .Ps ^Unseen\-Sequence:~^To name sequences denoting unseen messages .Ps ^showproc:~^Program to show text (non-MIME) messages .Ps ^showmimeproc:~^Program to show non-text (MIME) messages .Sa mhl(1), mhshow(1), more(1), next(1), prev(1), scan(1) .De `+folder' defaults to the current folder .Ds `msgs' defaults to cur .Ds `\-checkmime' .Ds `\-header' .Co If a folder is given, it will become the current folder. The last message shown will become the current message. .Bu The `\-header' switch doesn't work when `msgs' expands to more than one message. If the \fIshowproc\fR is \fImhl\fR, then is problem can be circumvented by referencing the \*(lqmessagename\*(rq field in the \fImhl\fR format file. \fIShow\fR updates the user's context before showing the message. Hence \fIshow\fR will mark messages as seen prior to the user actually seeing them. This is generally not a problem, unless the user relies on the \*(lqunseen\*(rq messages mechanism, and interrupts \fIshow\fR while it is showing \*(lqunseen\*(rq messages. If your \fIshowproc\fR is \fImhl\fR (the default), then \fIshow\fR uses a built\-in \fImhl\fR: it does not actually run the \fImhl\fR program. Hence, if you define your own \fIshowproc\fR, don't call it \fImhl\fR since \fIshow\fR won't run it. If your \fIshowproc\fR is the pager \fImore\fR, then avoid running \fIshow\fR in the background with only its standard output piped to another process, as in .ti +.5i show | imprint & Due to a bug in \fImore\fR, show will go into a \*(lqtty input\*(rq state. To avoid this problem, re\-direct \fIshow\fR's diagnostic output as well. For users of \fIcsh\fR: .ti +.5i show |& imprint & For users of \fIsh\fR: .ti +.5i show 2>&1 | imprint & .En