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From: Eli Zaretskii <eliz@gnu.org>
To: Drew Adams <drew.adams@oracle.com>
Cc: larsi@gnus.org, 17173@debbugs.gnu.org
Subject: bug#17173: 24.4.50; Emacs partially loses display, and redisplay via `C-l' does not fix it
Date: Sat, 26 Dec 2015 20:20:12 +0200	[thread overview]
Message-ID: <834mf5hy1v.fsf@gnu.org> (raw)
In-Reply-To: <970cb5d6-b017-4aad-be69-0628c5792fd3@default> (message from Drew Adams on Sat, 26 Dec 2015 09:29:16 -0800 (PST))

> Date: Sat, 26 Dec 2015 09:29:16 -0800 (PST)
> From: Drew Adams <drew.adams@oracle.com>
> Cc: larsi@gnus.org, 17173@debbugs.gnu.org
> 
> Maybe, when such wholesale optimizations are made in the future,
> some debug code can be added, so that symptoms such as I reported
> can more easily be traced to particular source changes?  Is that
> feasible?

We have the debug code.  I myself use it all the time, and several
times asked people who reported bugs to enable it and show the output.
But it produces a lot of output, so it is only feasible to turn it on
when running a reproducible recipe.  Which we don't have in this case.

> My impression is that this is not the only bug report about
> failures to redisplay properly in Emacs 25.  Seems like we have,
> on the one hand, lots of redisplay optimizations implemented
> together, or within a short timespan, and a fair number of
> redisplay problems reported, and no specific, operational
> connections made between the two.

There were indeed several reports about redisplay problems, related to
those changes.  They were all fixed, AFAICT, because each one
eventually succeeded to find a recipe for reproducing the problem.





  reply	other threads:[~2015-12-26 18:20 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <<17026dc9-ee25-4e83-a5c4-86140d37e250@default>
     [not found] ` <<83lhvnbrbk.fsf@gnu.org>
2014-04-02 17:19   ` bug#17173: 24.4.50; Emacs partially loses display, and redisplay via `C-l' does not fix it Drew Adams
2015-12-26 14:09     ` Lars Ingebrigtsen
2015-12-26 16:38       ` Drew Adams
2015-12-26 16:43         ` Eli Zaretskii
     [not found]   ` <<849e9e65-3cc7-45b9-b388-da5993600278@default>
     [not found]     ` <<87si2pz4gi.fsf@gnus.org>
     [not found]       ` <<5a3eb48a-6574-41bc-a8c2-37659ec5ebde@default>
     [not found]         ` <<83a8oxi2i8.fsf@gnu.org>
2015-12-26 17:29           ` Drew Adams
2015-12-26 18:20             ` Eli Zaretskii [this message]
2014-04-02 15:14 Drew Adams
2014-04-02 15:49 ` Daniel Colascione
2014-04-02 15:54   ` Juanma Barranquero
2014-04-02 15:58     ` Daniel Colascione
2014-04-02 16:22       ` Drew Adams
2014-04-02 16:21   ` Drew Adams
2014-04-02 16:59 ` Eli Zaretskii

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