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Working through samples from the Great Computer
Language Shootout, I wrote a Haskell program which is
supposed to be basically equivalent to the perl program at:

http://www.bagley.org/~doug/shootout/bench/regexmatch/regexmatch.perl

And in fact I copied the regular expression directly
from the perl example and used search and replace to
change single backslashes to double backslashes to deal
with Haskell vs. Perl strings.

But the regex fails to match where it should. Since I
copied the regex directly from the working perl script,
I'm pretty sure it's correct. Since the RegexString
modules says the regex syntax is that of Perl, I'm
reporting it as a bug.

The haskell file is attached. It is intended to be run
with an integer command line argument (2 is fine), and
input piped from the file at:

http://www.bagley.org/data/shootout/regexmatch/Input

I'm on Windows NT 4.0 sp4 and GHC 5.02.

Trac metadata

Trac field	Value
Version	5.02
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedFixed
Component	hslibs/text
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