GNU bug report logs - #11663
Incorrect regexp match with explicitly numbered blocks

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Andreas Schwab <schwab <at> linux-m68k.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#11663: closed (Incorrect regexp match with explicitly
 numbered blocks )
Date: Sun, 10 Jun 2012 08:58:02 +0000

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Your message dated Sun, 10 Jun 2012 10:55:23 +0200
with message-id <m2vcizr1fo.fsf <at> linux-m68k.org>
and subject line Re: bug#11663: Incorrect regexp match with explicitly numbered blocks
has caused the debbugs.gnu.org bug report #11663,
regarding Incorrect regexp match with explicitly numbered blocks 
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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11663: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11663
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From: Vitalie Spinu <spinuvit <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Incorrect regexp match with explicitly numbered blocks 
Date: Sat, 09 Jun 2012 23:26:28 +0200

Hi, 

Assume this buffer's text. M-x regexp-builder and try this regexp
"\\(?:^Hi\\)" which works correctly. Modify to "\\(?2:^Hi\\)" and you
will see that ^ is taken literally and does not match bol anymore.

I've tried this in emacs 23 and on GNU Emacs 24.1.50.1
(i686-pc-linux-gnu, GTK+ Version 3.4.2) of 2012-06-08 on lakoocha,
modified by Debian.

Vitalie.

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From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Vitalie Spinu <spinuvit <at> gmail.com>
Cc: 11663-done <at> debbugs.gnu.org
Subject: Re: bug#11663: Incorrect regexp match with explicitly numbered blocks
Date: Sun, 10 Jun 2012 10:55:23 +0200

Thanks for the report.  The problem was that at_begline_loc_p wasn't
updated when the `(?N:' syntax was added.  I have also fixed a problem
with preceding backslashes that causes the ^ in patterns like "\\\\(^a)"
to be incorrectly taken non-literally.

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
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