From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#11484: 23.4; Scrolling leaves traces of old text behind Date: Mon, 22 Oct 2012 19:33:29 +0200 Message-ID: <83fw56csye.fsf@gnu.org> References: <8F188F07-37AF-4F32-A989-CDC844CE1B4F@swipnet.se> <83wqyjd2et.fsf@gnu.org> <8CEDD0A3-E7A8-40B1-9893-699FD3658E88@swipnet.se> <5084D588.4080303@dancol.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1350927259 28387 80.91.229.3 (22 Oct 2012 17:34:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 22 Oct 2012 17:34:19 +0000 (UTC) Cc: 11484@debbugs.gnu.org To: Daniel Colascione Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Oct 22 19:34:27 2012 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 1TQLtS-00035L-Nc for geb-bug-gnu-emacs@m.gmane.org; Mon, 22 Oct 2012 19:34:26 +0200 Original-Received: from localhost ([::1]:38877 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TQLtK-0003MY-P4 for geb-bug-gnu-emacs@m.gmane.org; Mon, 22 Oct 2012 13:34:18 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:51899) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TQLtI-0003MN-QM for bug-gnu-emacs@gnu.org; Mon, 22 Oct 2012 13:34:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TQLtH-0007li-Nc for bug-gnu-emacs@gnu.org; Mon, 22 Oct 2012 13:34:16 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:45923) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TQLtH-0007lU-Kn for bug-gnu-emacs@gnu.org; Mon, 22 Oct 2012 13:34:15 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TQLv0-0000mx-Co for bug-gnu-emacs@gnu.org; Mon, 22 Oct 2012 13:36:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 22 Oct 2012 17:36:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11484 X-GNU-PR-Package: emacs,ns X-GNU-PR-Keywords: Original-Received: via spool by 11484-submit@debbugs.gnu.org id=B11484.13509273483000 (code B ref 11484); Mon, 22 Oct 2012 17:36:02 +0000 Original-Received: (at 11484) by debbugs.gnu.org; 22 Oct 2012 17:35:48 +0000 Original-Received: from localhost ([127.0.0.1]:56174 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TQLul-0000mJ-Sf for submit@debbugs.gnu.org; Mon, 22 Oct 2012 13:35:48 -0400 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:61299) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TQLuj-0000m0-Rt for 11484@debbugs.gnu.org; Mon, 22 Oct 2012 13:35:46 -0400 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0MCB00I001YVMU00@a-mtaout22.012.net.il> for 11484@debbugs.gnu.org; Mon, 22 Oct 2012 19:33:33 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MCB00I6O23XLK20@a-mtaout22.012.net.il>; Mon, 22 Oct 2012 19:33:33 +0200 (IST) In-reply-to: <5084D588.4080303@dancol.org> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:65858 Archived-At: > Date: Sun, 21 Oct 2012 22:11:36 -0700 > From: Daniel Colascione > CC: Eli Zaretskii , 11484@debbugs.gnu.org > > Are displays still slow enough that we have to care about graphics optimization > at this level? As Stefan points out, yes, even on X11. There's also another annoying result of frequent full redrawing: flickering. I suspect that disabling this optimization will have the effect that leaning on the left or right arrow key would cause the line with the cursor flicker due to constant redrawing. Similar problems will show up with the mode line, which is updated quite frequently.