From: "Bruno Félix Rezende Ribeiro" <oitofelix@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 18912@debbugs.gnu.org
Subject: bug#18912: 24.4; mode-line corruption on graphical frames in dual-headed display
Date: Tue, 04 Nov 2014 19:09:07 -0200 [thread overview]
Message-ID: <54594073.9070200@gnu.org> (raw)
In-Reply-To: <83sihzufav.fsf@gnu.org>
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Eli Zaretskii wrote:
> You'd need to explain how Emacs succeeds in that, when it uses Xlib
> and higher-level APIs, which AFAIK are unaware of any accelerations.
> Emacs itself is certainly unaware of that, and does the same things
> regardless.
The Emacs algorithms for redrawing the frame's content could be based on
assumptions about the workings of graphical displays that fail to be
true in some corner cases.
> Moreover, the fact that running xrefresh, which is not an Emacs
> command, fixes the display is yet another argument against this
> hypothesis. xrefresh doesn't communicate with Emacs, so the only way
> it could fix the display is if the data supplied by Emacs was correct.
Of course 'xrefresh' command doesn't communicate directly with Emacs.
It works by mapping a window, with no background, on top of the Emacs'
frames, and then unmapping it, causing the X server to send a refresh
event to Emacs, that handles it and repaints its frames. So Emacs *do
know* how to get its frames right, when it wants to.
--
,= ,-_-. =. Bruno Félix Rezende Ribeiro (oitofelix) [0x28D618AF]
((_/)o o(\_)) There is no system but GNU;
`-'(. .)`-' GNU Linux-Libre is one of its official kernels;
\_/ All software must be free as in freedom;
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next prev parent reply other threads:[~2014-11-04 21:09 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 13:46 bug#18912: 24.4; mode-line corruption on graphical frames in dual-headed display Bruno Félix Rezende Ribeiro
2014-10-31 20:30 ` Stefan Monnier
2014-10-31 20:44 ` Bruno Félix Rezende Ribeiro
2014-11-01 8:42 ` Eli Zaretskii
2014-11-01 12:56 ` Bruno Félix Rezende Ribeiro
2014-11-01 8:38 ` Eli Zaretskii
2014-11-01 9:16 ` Eli Zaretskii
2014-11-01 12:54 ` Bruno Félix Rezende Ribeiro
2014-11-01 13:03 ` Eli Zaretskii
2014-11-02 21:49 ` Bruno Félix Rezende Ribeiro
2014-11-03 3:34 ` Eli Zaretskii
2014-11-03 6:03 ` Bruno Félix Rezende Ribeiro
2014-11-03 16:20 ` Eli Zaretskii
2014-11-03 17:43 ` martin rudalics
2014-11-03 17:52 ` Eli Zaretskii
2014-11-03 18:01 ` martin rudalics
2014-11-03 18:19 ` Eli Zaretskii
2014-11-03 20:06 ` Bruno Félix Rezende Ribeiro
2014-11-03 20:24 ` Eli Zaretskii
2014-11-03 20:29 ` Eli Zaretskii
2014-11-03 20:46 ` Eli Zaretskii
2014-11-03 21:01 ` Bruno Félix Rezende Ribeiro
2014-11-03 21:19 ` Eli Zaretskii
2014-11-04 6:05 ` Bruno Félix Rezende Ribeiro
2014-11-04 8:25 ` Bruno Félix Rezende Ribeiro
2014-11-04 16:00 ` Eli Zaretskii
2014-11-04 19:24 ` martin rudalics
2014-11-04 19:52 ` Eli Zaretskii
2014-11-04 20:13 ` Stefan Monnier
2014-11-05 3:39 ` Eli Zaretskii
2014-11-05 9:17 ` Andreas Schwab
2014-11-04 21:09 ` Bruno Félix Rezende Ribeiro [this message]
2014-11-05 16:02 ` Eli Zaretskii
2014-11-05 21:38 ` Bruno Félix Rezende Ribeiro
2014-11-06 3:45 ` Eli Zaretskii
2014-11-06 15:28 ` Stefan Monnier
2014-11-04 15:54 ` Stefan Monnier
2014-11-04 21:28 ` Bruno Félix Rezende Ribeiro
2014-11-04 23:11 ` Stefan Monnier
2014-11-04 15:56 ` Eli Zaretskii
2014-11-04 19:24 ` martin rudalics
2014-11-04 20:55 ` Bruno Félix Rezende Ribeiro
2014-11-04 20:14 ` Bruno Félix Rezende Ribeiro
2014-11-05 3:51 ` Eli Zaretskii
2014-11-05 6:28 ` Bruno Félix Rezende Ribeiro
2014-11-05 15:58 ` Eli Zaretskii
2014-11-05 19:46 ` Bruno Félix Rezende Ribeiro
2014-11-03 20:55 ` Bruno Félix Rezende Ribeiro
2014-11-03 20:44 ` Bruno Félix Rezende Ribeiro
2014-11-03 9:08 ` Andreas Schwab
2014-11-03 16:23 ` Eli Zaretskii
2014-11-03 9:41 ` martin rudalics
2014-11-03 18:58 ` Bruno Félix Rezende Ribeiro
2014-11-03 19:14 ` Eli Zaretskii
2014-11-03 20:10 ` Bruno Félix Rezende Ribeiro
2014-11-04 7:55 ` martin rudalics
2014-11-04 8:20 ` Bruno Félix Rezende Ribeiro
2014-11-04 9:19 ` martin rudalics
2014-11-04 10:25 ` Bruno Félix Rezende Ribeiro
2014-11-04 16:16 ` Eli Zaretskii
2014-11-04 19:56 ` Bruno Félix Rezende Ribeiro
2014-11-04 19:23 ` martin rudalics
2014-11-04 21:46 ` Bruno Félix Rezende Ribeiro
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