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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Structural regular expressions
Date: Fri, 10 Sep 2010 11:43:52 -0400
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Cc: wence@gmx.li, monnier@iro.umontreal.ca, emacs-devel@gnu.org
To: Lennart Borgman <lennart.borgman@gmail.com>
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	(message from Lennart Borgman on Fri, 10 Sep 2010 00:52:01 +0200)
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Could someone please explain what a "structural regular expression"
means?  The message that started the thread did not say.