From: Rick DeNatale <rick.denatale@...>
Date: 2009-08-11T02:01:05+09:00
Subject: Re: Linking text with regex

On Mon, Aug 10, 2009 at 11:14 AM, Peter Ehrlich<crazedcougar@gmail.com> wrote:
> Hi
>
> This is probably a silly question, but I'm wondering what the best way
> is to scan a string for regular expression matches, and then link to it.
> It would be great to do it in one line, like this:
>
>    <% text.sub!(/#[-'A-Za-z]+/, link_to($&, tweet.category_name))%>
>
> But as the sub! has not completed, $& still refers to the old variable.
> I suppose I can just find the text I will be matching ahead of time,
> which would involve scanning the string twice, but there might be a
> better way.  Thoughts?

  text.sub!(/#[-'A-Za-z]+/) {|m| link_to(m, tweet.category_name))}


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Rick DeNatale

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