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From: Richard Stallman <rms@gnu.org>
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Subject: Re: Redisplay crash
Date: Fri, 09 Apr 2004 18:44:19 -0400
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    I've had such problems in the past.
    There was a discussion about it with Gerd which led to

    2002-08-27  Gerd Moellmann  <gerd.moellmann@t-online.de>

Perhaps we need to record history information about occurrences
within redisplay, so that after it crashes we can investigate
what happened without needing to find a reproducible test case.