GNU bug report logs - #23431
Displaying animated GIFs can make Emacs unresponsive

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 23431 <at> debbugs.gnu.org, jch <at> pps.univ-paris-diderot.fr
Subject: bug#23431: 25.0.93; EWW hangs
Date: Tue, 03 May 2016 20:13:55 +0300

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Cc: jch <at> pps.univ-paris-diderot.fr,  23431 <at> debbugs.gnu.org
> Date: Tue, 03 May 2016 19:04:21 +0200
> 
> Most parts of the image formatting doesn't happen until redisplay
> happens -- `image-animate-timeout' just increases the image index, and
> then redisplay does all the hard lifting.
> 
> While redisplay is doing all that, Emacs isn't allowing any events to
> fire, I think, so we should be able to see that Emacs is busy...

But why would display of an image be so slow?  It isn't slow with
simple GIF images.  What am I missing?

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