GNU bug report logs - #19306
[PATCH 1/2] dfa: avoid execution for a pattern including an unsupported expression

Previous Next

Full log

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
To: <bug-grep <at> gnu.org>
Subject: [PATCH 1/2] dfa: avoid execution for a pattern including an
 unsupported expression
Date: Tue, 09 Dec 2014 00:24:38 +0900

[Message part 1 (text/plain, inline)]

If a pattern includes an unsupported expression which is labeled as
BACKREF, a text will almost fail to match the pattern.

First patch makes changes to return immediately and avoid pidding search
if a pattern includes an unsupported expression.

Second patch removes word constraint support which is as labeled BEGWORD,
ENDWORD, LIMWORD and NOTLIMWORD for multibyte-locales including UTF-8
from DFA, as we use regex instead of DFA for a pattern including word
constraint so that it does not correctly treat word constraint.

[0001-dfa-avoid-execution-for-a-pattern-including-an-unsup.patch (text/plain, attachment)]

[0002-dfa-remove-a-support-of-a-word-delimiter-expression-.patch (text/plain, attachment)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.