From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Bruno =?UTF-8?Q?F=C3=A9lix?= Rezende Ribeiro Newsgroups: gmane.emacs.bugs Subject: bug#18912: 24.4; mode-line corruption on graphical frames in dual-headed display Date: Mon, 03 Nov 2014 04:03:39 -0200 Organization: GNU Project Message-ID: <54571ABB.7020000@gnu.org> References: <54524135.8090405@gnu.org> <8361ezz56z.fsf@gnu.org> <5454D7EB.6060407@gnu.org> <83sii3xecv.fsf@gnu.org> <5456A6FE.90108@gnu.org> <83tx2hvtwp.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="7MXpj9RL1efOGGcQk1EKwKRV6PTG2H0mS" X-Trace: ger.gmane.org 1414994654 20822 80.91.229.3 (3 Nov 2014 06:04:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 3 Nov 2014 06:04:14 +0000 (UTC) Cc: 18912@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Nov 03 07:04:07 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XlAkJ-0000DG-5V for geb-bug-gnu-emacs@m.gmane.org; Mon, 03 Nov 2014 07:04:07 +0100 Original-Received: from localhost ([::1]:60518 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XlAkI-0001O8-Ol for geb-bug-gnu-emacs@m.gmane.org; Mon, 03 Nov 2014 01:04:06 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51137) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XlAkF-0001O0-Rq for bug-gnu-emacs@gnu.org; Mon, 03 Nov 2014 01:04:04 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XlAkE-0004Kh-UO for bug-gnu-emacs@gnu.org; Mon, 03 Nov 2014 01:04:03 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:49462) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XlAkE-0004Kd-Ro for bug-gnu-emacs@gnu.org; Mon, 03 Nov 2014 01:04:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XlAkE-0006jy-KS for bug-gnu-emacs@gnu.org; Mon, 03 Nov 2014 01:04:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Bruno =?UTF-8?Q?F=C3=A9lix?= Rezende Ribeiro Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 03 Nov 2014 06:04:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18912 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18912-submit@debbugs.gnu.org id=B18912.141499463225891 (code B ref 18912); Mon, 03 Nov 2014 06:04:02 +0000 Original-Received: (at 18912) by debbugs.gnu.org; 3 Nov 2014 06:03:52 +0000 Original-Received: from localhost ([127.0.0.1]:46675 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XlAk3-0006jX-PS for submit@debbugs.gnu.org; Mon, 03 Nov 2014 01:03:52 -0500 Original-Received: from fencepost.gnu.org ([208.118.235.10]:51815 ident=Debian-exim) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XlAk1-0006jP-N7 for 18912@debbugs.gnu.org; Mon, 03 Nov 2014 01:03:50 -0500 Original-Received: from 189-015-230-040.xd-dynamic.ctbcnetsuper.com.br ([189.15.230.40]:59731 helo=[192.168.1.17]) by fencepost.gnu.org with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1XlAk0-0001BD-Kb; Mon, 03 Nov 2014 01:03:49 -0500 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:33.0) Gecko/20100101 Firefox/33.0 SeaMonkey/2.30 In-Reply-To: <83tx2hvtwp.fsf@gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:95415 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --7MXpj9RL1efOGGcQk1EKwKRV6PTG2H0mS Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Eli Zaretskii wrote: > Unnecessary redrawing causes unpleasant flickering that people > rightfully complain about. It wouldn't be unnecessary because only people having a similar problem would deliberately enable the mode-line redrawing. I can assure you a constantly corrupted mode-line is much more annoying than one fast flash that will only occur sporadically, in just one line, by direct command of the user. In particular, on scroll operations all lines in the window are expected to change, so it's not that bad if just one more line, contiguous to the region, flashes. Actually, the chances are that the flash won't be noticeable at all. As suggested, this workaround would have no effect on any users that have not experienced the problem, while virtually fixing it for people who experiences it. That's almost ideal in a scenario where it'd be very time consuming or hard to find the cause and fix the actual bug. > Emacs never writes buffer contents where the mode line should be, so > this problem could only happen if Emacs for some reason becomes > confused about the window dimensions. The result could be a variety > of display problems, not just what you see. Yeah, it might be, but we can't really know until someone experiences other correlated display problems. However, the workaround won't worsen the bug under any possible circumstances, and fixes it for people who are already experiencing that particular display problem. > Are you willing to debug this problem on your machine using GDB? If > so, I might come up with some instructions. Sure, why not? However, if we can't find the bug's root, I'll ask you to consider implementing the suggested workaround. Deal? ;-) --=20 ,=3D ,-_-. =3D. Bruno F=C3=A9lix Rezende Ribeiro (oitofelix) [0x28D618A= F] ((_/)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; --7MXpj9RL1efOGGcQk1EKwKRV6PTG2H0mS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBCgAGBQJUVxq7AAoJECe5xv0o1hivw/MH/Reemf3gk/w2MUgqRKn3GruZ 5zTjpDCVpfmltAKVvlh+4oaNbdVOkCGmmwpDzJ0i3ILZgmBb7sUvR9tK04zSstJl EZY4izxWOqKyC7qNakKBdPwy5aCxTndpGiFpjdwkSF7SfDJoLF02RUnGQtp2RMPZ EQ7eWZncw0CX2udo+vLXaXAE9Vz13jU9695CuuLAbyGs9x+6E9G8g8G8JODeSJmg kUKwDoAjfzCpoWdSQaxeMaCZh7woTSuIJDSlIqWtrH0vfjoelsPM8McFXIEcxHpc qGClTlCeDPtw6OzqptfcNEbzEZxIpxNGqQTkhD4dZE0ZvKzhbHSbBCsjP32mleg= =1Cue -----END PGP SIGNATURE----- --7MXpj9RL1efOGGcQk1EKwKRV6PTG2H0mS--