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From: "Lennart Borgman (gmail)" <lennart.borgman@gmail.com>
Newsgroups: gmane.emacs.devel
Subject: Strange results from lwarn + match-string
Date: Tue, 19 Feb 2008 19:20:31 +0100
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Can anyone see anything wrong with this line:

   (lwarn t :warning "1: %s" (match-string-no-properties 1))

I get some very strange result sometimes. If I use (message ...) instead 
the result looks ok.