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#17678: 24.4.50; Feature Request -- calculate new `window-start` & `window-end` before visual redisplay Date: Sat, 14 Jun 2014 12:45:18 +0300 Message-ID: <834mznx1sh.fsf@gnu.org> References: <831tuvz3n8.fsf@gnu.org> <83ha3qxbcc.fsf@gnu.org> <8361k5xra8.fsf@gnu.org> <83r42tvt0l.fsf@gnu.org> <83ha3ox3vk.fsf@gnu.org> <838up0wmoa.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1402739183 12219 80.91.229.3 (14 Jun 2014 09:46:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 14 Jun 2014 09:46:23 +0000 (UTC) Cc: esq@lawlist.com, 17678@debbugs.gnu.org To: monnier@iro.umontreal.ca Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Jun 14 11:46:16 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 1WvkXQ-0006j7-3a for geb-bug-gnu-emacs@m.gmane.org; Sat, 14 Jun 2014 11:46:16 +0200 Original-Received: from localhost ([::1]:34736 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WvkXP-0005RK-Pn for geb-bug-gnu-emacs@m.gmane.org; Sat, 14 Jun 2014 05:46:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56398) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WvkXI-0005QO-MC for bug-gnu-emacs@gnu.org; Sat, 14 Jun 2014 05:46:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WvkXD-00086U-D0 for bug-gnu-emacs@gnu.org; Sat, 14 Jun 2014 05:46:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:56042) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WvkXD-00086M-AL for bug-gnu-emacs@gnu.org; Sat, 14 Jun 2014 05:46:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1WvkXC-0005vD-TN for bug-gnu-emacs@gnu.org; Sat, 14 Jun 2014 05:46:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 14 Jun 2014 09:46:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17678 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 17678-submit@debbugs.gnu.org id=B17678.140273914322724 (code B ref 17678); Sat, 14 Jun 2014 09:46:02 +0000 Original-Received: (at 17678) by debbugs.gnu.org; 14 Jun 2014 09:45:43 +0000 Original-Received: from localhost ([127.0.0.1]:47192 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WvkWs-0005uR-JZ for submit@debbugs.gnu.org; Sat, 14 Jun 2014 05:45:43 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:34047) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1WvkWl-0005u2-RL for 17678@debbugs.gnu.org; Sat, 14 Jun 2014 05:45:37 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0N7500000JZUNN00@a-mtaout21.012.net.il> for 17678@debbugs.gnu.org; Sat, 14 Jun 2014 12:45:28 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N75000L5KFRKB30@a-mtaout21.012.net.il>; Sat, 14 Jun 2014 12:45:28 +0300 (IDT) In-reply-to: <838up0wmoa.fsf@gnu.org> X-012-Sender: halo1@inter.net.il 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:90369 Archived-At: > Date: Fri, 13 Jun 2014 23:59:33 +0300 > From: Eli Zaretskii > Cc: esq@lawlist.com, 17678@debbugs.gnu.org > > > From: Stefan Monnier > > Cc: esq@lawlist.com, 17678@debbugs.gnu.org > > Date: Fri, 13 Jun 2014 14:47:05 -0400 > > > > >> > Not necessarily: there are the w->optional_new_start and > > >> > w-> force_start flags, which determine what redisplay does with > > >> > window-start in these cases. > > >> > Also, the window-start could be set to a value that leaves point out > > >> > of the displayed area, in which case it won't be in effect. > > >> Right, but these fall back into the case where redisplay performs > > >> a second pass trough the window/buffer, so it's similar to the scrolling > > >> case, right? > > > Not necessarily, AFAIR. Sometimes these situations are detected and > > > handled on the fly. > > > > Aha! Could you add comment somewhere in xdisp.c discussing the above > > issues about how/when is window-start obeyed and when it's not and > > when that causes a second pass and when that's handled on the fly? > > I will see what I can do. Done in emacs-24 revision 117239. Please see if it's good enough.