GNU bug report logs - #192
regexp does not work as documented

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Message #60 received at 192 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: David Koppelman <koppel <at> ece.lsu.edu>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Chong Yidong <cyd <at> stupidchicken.com>, 192 <at> debbugs.gnu.org,
        Bruno Haible <bruno <at> clisp.org>, emacs-devel <at> gnu.org
Subject: Re: regexp does not work as documented
Date: Sat, 10 May 2008 15:13:37 -0500

I *am* able to reproduce the font-lock-multiline limitation martin
described if the buffer is in text mode. I had tried to reproduce it
in emacs-lisp mode.

First I'll work on the hi-lock warning as I described below, then I'll
see about detecting and doing something helpful for additional
situations where multi-line won't work.

David Koppelman <koppel <at> ece.lsu.edu> writes:

> I was able to reproduce the problem with Bruno Haible's testcase and
> font-lock-multiline t does "fix" it. However martin rudalics warns that
> font-lock-multiline won't work for all cases and provides an example
> idea (below). I can't get that to fail. That is, with
> font-lock-multiline t the text was correctly fontified (though after a
> pause). My realization of the example was to remove and then add the
> first quotation mark from one of the interior lines below (also
> tried with more quoted lines):
>
> msgstr ""
> "Project-Id-Version: GNU gettext-tools 0.16.2-pre5\n"
> "Report-Msgid-Bugs-To: bug-gnu-gettext <at> gnu.org\n"
> "POT-Creation-Date: 2007-11-02 03:23+0100\n"
> "PO-Revision-Date: 2007-10-27 13:35+0200\n"
> "Last-Translator: Christophe Combelles <ccomb <at> free.fr>\n"
> "Last-Translator: Christophe Combelles <ccomb <at> free.fr>\n"
> x
>
> The fix I'm contemplating would be to warn the user when a multi-line
> regexp was added interactively and font-lock-multiline was nil, and then
> perhaps to offer to set font-lock-multiline to t (or to not set it, or
> to stop asking).

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