From: Ralf Mueller <ralf.mueller@...>
Date: 2010-02-07T03:57:35+09:00
Subject: Re: match/scan does not return multiple matches

Michal Suchanek wrote:
> Hello
>
> I tried scanning for multiple occurences of a group in a string and
> match/scan would return only one.
>
>
> "ajabcabck".match /^a*j(?:b*(a+)b+c*)+k$/
> => #<MatchData "ajabcabck" 1:"a">
>
> "ajabcabck".scan /^a*j(?:b*(a+)b+c*)+k$/
> => [["a"]]
>
>
> clearly the a+ group must match twice to match the string from ^ to $
> but only single match is returned.
>
> It is possible to use split instead but using a single match would be
> much nicer.
>
> Any workaround?
>
> ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux]
>
>
> Thanks
>
> Michal
>
>   
Hi
as far as i know, nested groups are not allowed. regular expressions do 
not form a language.

regards
ralf