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From: David Maus <maus.david@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: Question on re-search-forward and infinite loop
Date: Mon, 30 Nov 2009 09:24:34 +0100	[thread overview]
Message-ID: <87zl64mnct.wl%maus.david@gmail.com> (raw)
In-Reply-To: <barmar-EAB185.18171626112009@news.eternal-september.org>

Hi there,

At Thu, 26 Nov 2009 18:17:16 -0500,
Barry Margolin wrote:
> 
> Your regexp matches zero or more whitespace characters at the beginning 
> of a line.  If there's an empty line at the end of the buffer, it will 
> match that.  But since it's a zero-length match, point is left at that 
> position, and the next time around it again matches it.
> 
> In general, whenever a regexp can match a zero-length string, I think 
> that type of loop will go infinitely.

Thanks, this makes perfect sense to me.

Regards,

  -- David
-- 
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  reply	other threads:[~2009-11-30  8:24 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.11588.1259269277.2239.help-gnu-emacs@gnu.org>
2009-11-26 23:17 ` Question on re-search-forward and infinite loop Barry Margolin
2009-11-30  8:24   ` David Maus [this message]
2009-11-26 21:01 David Maus
2009-11-26 21:11 ` Lennart Borgman

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