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PCRE previously did not correctly evaluate regular expressions with literal quotations inside character class. For example, the expression "/[\Qa]\E]+/" was not matching the string "a", although it should. The problem has been fixed and regular expressions with literal quotations inside character class are now being evaluated correctly.
+++ This bug was initially created as a clone of Bug #1111054 +++
This should match:
$ printf '%s\n%s\n' '/[\Qa]\E]+/' 'a' | ./pcretest -d
PCRE version 8.35 2014-04-04
re> ------------------------------------------------------------------
0 7 Bra
3 a
5 ]++
7 7 Ket
10 End
------------------------------------------------------------------
Capturing subpattern count = 0
No options
First char = 'a'
Need char = ']'
data> No match
data>
Upstream fixed it by:
commit 8d8c3dbadff3d0735ba696acf211c14b3025622f
Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
Date: Wed Jun 18 17:17:03 2014 +0000
Fix bad compile of [\Qx]... where x is any character.
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1487 2f5784b3-3f2a-0410-8824-cb99058d5e15
----
RHEL-7 is affected (pcre-8.32-12.el7.x86_64)
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-2142.html