From: John Ab <test30zxc@...>
Date: 2008-10-03T04:49:09+09:00
Subject: what does %r

match = url.match(%r[http://(.+).site.com/a-(\d+).html])
 my question is what is this %r, i know that %w(x 1 2)=['x','1','2'] but
what's %r,
can i read more about these percents?
links please
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