GNU bug report logs - #5984
Crash displaying composed characters

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Message #73 received at 5984 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Juanma Barranquero <lekktu <at> gmail.com>
Cc: Andreas Schwab <schwab <at> linux-m68k.org>, Eli Zaretskii <eliz <at> gnu.org>,
	5984 <at> debbugs.gnu.org
Subject: Re: bug#5984: Crash displaying composed characters
Date: Sun, 07 Aug 2011 15:45:29 -0400

Juanma Barranquero <lekktu <at> gmail.com> writes:

> (Just pinging; the workaround was installed in 23.X, I think, but the
> crash still happens in 24.0.50.)

A change to autocmp_chars in the trunk undid the workaround.  I've fixed
that.

As to the larger question of how to handle composition or redisplay
functions that modify the buffer, I still don't see any good solution.
Forbidding them from modifying buffers entirely is no good, because
fontification functions need to be able to change text properties.

I will, however, install a few additional ad-hoc fixes on the trunk to
inhibit crashes like

  (put-text-property 1 10 'display '(height (progn (delete-region 1 10))))

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