From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stephan Mueller Newsgroups: gmane.emacs.devel Subject: RE: Slow redisplay with long lines Date: Thu, 15 May 2014 20:57:08 +0000 Message-ID: References: <83mwein6w1.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1400193525 17706 80.91.229.3 (15 May 2014 22:38:45 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 15 May 2014 22:38:45 +0000 (UTC) To: Stefan Monnier , "emacs-devel@gnu.org" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri May 16 00:38:38 2014 Return-path: Envelope-to: ged-emacs-devel@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 1Wl4IN-0004Eh-PL for ged-emacs-devel@m.gmane.org; Fri, 16 May 2014 00:38:35 +0200 Original-Received: from localhost ([::1]:60829 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wl4IN-0007fJ-DB for ged-emacs-devel@m.gmane.org; Thu, 15 May 2014 18:38:35 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:38429) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wl3ER-0003vO-93 for emacs-devel@gnu.org; Thu, 15 May 2014 17:30:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wl3EJ-0001K6-PC for emacs-devel@gnu.org; Thu, 15 May 2014 17:30:27 -0400 Original-Received: from mail-bn1blp0190.outbound.protection.outlook.com ([207.46.163.190]:8168 helo=na01-bn1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wl3EJ-0001JL-LC for emacs-devel@gnu.org; Thu, 15 May 2014 17:30:19 -0400 Original-Received: from BL2PR03MB145.namprd03.prod.outlook.com (10.255.230.13) by BL2PR03MB147.namprd03.prod.outlook.com (10.255.230.19) with Microsoft SMTP Server (TLS) id 15.0.944.11; Thu, 15 May 2014 20:57:13 +0000 Original-Received: from BL2PR03MB145.namprd03.prod.outlook.com ([169.254.10.185]) by BL2PR03MB145.namprd03.prod.outlook.com ([169.254.10.185]) with mapi id 15.00.0944.000; Thu, 15 May 2014 20:57:13 +0000 Thread-Topic: Slow redisplay with long lines Thread-Index: AQHPcH3aPPu34tg1YkSZcmgMQA+zZ5tCHvBA Deferred-Delivery: Thu, 15 May 2014 20:57:00 +0000 In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [131.107.159.46] x-o365ent-eop-header: Message processed by - O365_ENT: Allow from ranges (Engineering ONLY) x-forefront-prvs: 0212BDE3BE x-forefront-antispam-report: SFV:NSPM; SFS:(6009001)(428001)(189002)(199002)(86612001)(31966008)(20776003)(64706001)(80022001)(66066001)(74662001)(74502001)(79102001)(74316001)(77982001)(76482001)(46102001)(81342001)(2656002)(101416001)(87936001)(81542001)(54356999)(4396001)(83322001)(99396002)(99286001)(76176999)(83072002)(85852003)(50986999)(92566001)(33646001)(86362001)(21056001)(76576001)(24736002); DIR:OUT; SFP:; SCL:1; SRVR:BL2PR03MB147; H:BL2PR03MB145.namprd03.prod.outlook.com; FPR:; MLV:sfv; PTR:InfoNoRecords; MX:1; A:1; LANG:en; received-spf: None (: microsoft.com does not designate permitted sender hosts) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Stephan.Mueller@microsoft.com; X-OriginatorOrg: microsoft.onmicrosoft.com X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 X-Received-From: 207.46.163.190 X-Mailman-Approved-At: Thu, 15 May 2014 18:38:24 -0400 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:171867 Archived-At: " > Long lines slow down redisplay because it needs to scan the entire " > line to see how tall it will be on display. " " Why should it care about the whole line rather than only the part " of it that's displayed? So that the line height doesn't change when scrolling horizontally and a taller character comes into view? stephan();