From: Robert Klemme <redmine@...>
Date: 2010-11-25T17:40:25+09:00
Subject: [ruby-core:33370] [Ruby 1.9-Bug#4088][Open] Case Sensitivity in Regular Expressions with Lookbehind


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Bug #4088: Case Sensitivity in Regular Expressions with Lookbehind
http://redmine.ruby-lang.org/issues/show/4088

Author: Robert Klemme
Status: Open, Priority: Normal
Category: core
ruby -v: ruby 1.9.1p430 (2010-08-16 revision 28998) [i386-cygwin]

It seems regular expressions with negative lookbehind do not treat case p=
roperly if
1. there is an alternative in the lookbehind
2. one alternative is longer than one char

I believe lines 18 - 20 are wrong and should return the same result as li=
ne 17.

Interestingly if the alternatives in lookbehind are exchanged the express=
ion works as expected (lines 23 - 25).


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