From: Peter Ehrlich <crazedcougar@...>
Date: 2009-08-11T00:14:00+09:00
Subject: Linking text with regex

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?

Thanks in advance!!
--Peter
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