bug#744: marked as done (nroff-mode auto-fill-mode not on directives)

[don@donarmstrong.com (Emacs bug Tracking System)]

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Your message dated Wed, 20 Aug 2008 18:25:01 -0400
with message-id <87r68jiate.fsf@cyd.mit.edu>
and subject line Re: nroff-mode auto-fill-mode not on directives
has caused the Emacs bug report #744,
regarding nroff-mode auto-fill-mode not on directives
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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-- 
744: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=744
Emacs Bug Tracking System
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In nroff-mode it'd be good if auto-fill-mode didn't fill when you're
entering a long directive line like

    .IP some long line going past your normal fill width ...

Almost always *roff directives have to be a single line.  I struck the
problem with a groff .URL with a long url doubled-up to both display
literally and be clickable in -Thtml.

I've been using the regexp below, which suppresses auto-fill on .IP and
the like, but continues to auto-fill the comment directives (no change)

    .\"    traditional
    .\#    groff extension
    '''    another traditional, apparently

And of course non-directive lines ("." or "'") are still auto-filled
(either ordinary text, or comments starting \" and \#).


2008-08-18  Kevin Ryde  <user42@zip.com.au>

	* textmodes/nroff-mode.el (nroff-mode): Set auto-fill-inhibit-regexp
	so as not to auto-fill on directive lines, other than comment
	directives.


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*** nroff-mode.el	08 May 2008 11:29:50 +1000	1.40
--- nroff-mode.el	18 Aug 2008 20:29:55 +1000	
***************
*** 144,149 ****
--- 144,160 ----
         (concat "[.']\\|" paragraph-start))
    (set (make-local-variable 'paragraph-separate)
         (concat "[.']\\|" paragraph-separate))
+ 
+   ;; Don't auto-fill directive lines starting . or ' since they normally
+   ;; have to be one line.  But do auto-fill comments .\" .\# and '''
+   ;;
+   ;; Comment directives (those starting . or ') are [.'][ \t]*\\[#"] or a
+   ;; ''', and this regexp is everything except those.  So [.'] followed by
+   ;; not backslash and not ' or followed by backslash but then not # or "
+   ;;
+   (set (make-local-variable 'auto-fill-inhibit-regexp)
+        "[.'][ \t]*\\([^ \t\\']\\|\\\\[^#\"]\\)")
+ 
    ;; comment syntax added by mit-erl!gildea 18 Apr 86
    (set (make-local-variable 'comment-start) "\\\" ")
    (set (make-local-variable 'comment-start-skip) "\\\\[\"#][ \t]*")

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From: Chong Yidong <cyd@stupidchicken.com>
To: Kevin Ryde <user42@zip.com.au>
Cc: 744-done@emacsbugs.donarmstrong.com
Subject: Re: nroff-mode auto-fill-mode not on directives
Date: Wed, 20 Aug 2008 18:25:01 -0400
Message-ID: <87r68jiate.fsf@cyd.mit.edu>

> In nroff-mode it'd be good if auto-fill-mode didn't fill when you're
> entering a long directive line

Thanks.  I've checked your patch in.