Re: multiline regex mode?

From: michael@cadilhac.name (Michaël Cadilhac)
Cc: help-gnu-emacs@gnu.org
Subject: Re: multiline regex mode?
Date: Mon, 16 Oct 2006 13:24:46 +0200	[thread overview]
Message-ID: <87vemkcxkx.fsf@lrde.org> (raw)
In-Reply-To: <m3u024k1di.fsf@ukdev-lin-grc.ukdev.eu.tandberg.int> (Giles Chamberlin's message of "Mon\, 16 Oct 2006 11\:20\:57 +0100")

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Giles Chamberlin <giles.chamberlin@tandberg.net> writes:

> [snip] regex to match {foo} and {\nfoo\n}
>
> Dieter Wilhelm <dieter@duenenhof-wilhelm.de> writes:
>
>> Does this (between the "")
>>
>> "{[^}]*}"
>>
>> work for you?  
>
> That works but I' don't understand why given that {.*} fails.  Any
> enlightenment gratefully received!

This is because of the following (from M-x info m elisp):

`.' (Period)
     is a special character that matches any single character except a
     newline.

`[^ ... ]'
     A complemented character alternative can match a newline, unless
     newline is mentioned as one of the characters not to match.  This
     is in contrast to the handling of regexps in programs such as
     `grep'.

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