From: "Ara.T.Howard" <Ara.T.Howard@...>
Date: 2005-09-14T23:21:34+09:00
Subject: Re: Surprising Regexp Behavior

On Wed, 14 Sep 2005, Robert Klemme wrote:

> Ah!  In that case I'd something like:
>
> html.sub!(/(<p>)(.*?)(<\/p>)(.*)/) { $1 << $2.strip << $3 }

it never occured to me that regexes could be made to be context sensitive in
that way - that usage of the block, i think, makes them recognize more that
the regular languages doesn't it?  something like

   string.sub(pat){ $1 =~ /foo/ ? 'bar' : 'baz' }

though i suppose you can only look backward using this unless the pattern was
made quite general to ensure capture forward....

-a
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