From: Sebastian Hungerecker <sepp2k@...>
Date: 2008-07-28T21:51:47+09:00
Subject: Re: Gsup with variable when replacing

Romain LOMBARDO wrote:
> f3 = line.gsub!(/\d+$/,'<number>\1</number>')

\1 means "first group", but there are no groups in your regex. \0 means "whole 
match", so that's the one you want.
Another thing: gsub! is the mutating variant of gsub. It will return nil when 
no change occurs or self when there is a change. Either way it does not make 
sense to store its return value.
And yet another thing: there is no sense in using gsub (as opposed to sub) 
with a regex that only matches once anyway.

HTH,
Sebastian
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