From: Leonid Razoumov <see_signature@127.0.0.1>
Date: 2001-05-26T04:40:04+09:00
Subject: [ruby-talk:15724] Re: regexp

ts <decoux@moulon.inra.fr> writes:
>  Ruby has really a problem with 'duplicate'. I must say that I've found
>  very strange the rules used by the regexp engine in this case.
> 
>  Another example
> 
> pigeon% ruby -e 'puts "OK" if /(a)*-\1b/ =~ "aaa-b"'
> OK
> pigeon% 
> 
> Guy Decoux

Certainly it is a problem. Try the following:

[0]> ruby -e 'puts "OK" if /(a)+-\1b/ =~ "aaa-b"'
[0]>

--Leo--