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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Indexed search with grep-like output
Date: Sun, 02 Jan 2011 06:18:42 -0500
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	(message from Lennart Borgman on Sun, 2 Jan 2011 05:12:32 +0100)
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> From: Lennart Borgman <lennart.borgman@gmail.com>
> Date: Sun, 2 Jan 2011 05:12:32 +0100
> Cc: emacs-devel@gnu.org
> 
> I do not know about other search engines, but at least Windows Desktop
> Search allows you to restrict the search later.

Because it's dog slow.  `lid' is very fast, so if you don't want to
index each tree separately, you can filter the output (which includes
the full absolute file name) in Emacs, in the process filter that
accepts `lid's output.