From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.bugs Subject: bug#17173: 24.4.50; Emacs partially loses display, and redisplay via `C-l' does not fix it Date: Sat, 26 Dec 2015 09:29:16 -0800 (PST) Message-ID: <970cb5d6-b017-4aad-be69-0628c5792fd3@default> References: <<17026dc9-ee25-4e83-a5c4-86140d37e250@default>>> <<83lhvnbrbk.fsf@gnu.org>>> <<849e9e65-3cc7-45b9-b388-da5993600278@default>> <<87si2pz4gi.fsf@gnus.org>> <<5a3eb48a-6574-41bc-a8c2-37659ec5ebde@default>> <<83a8oxi2i8.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 1451151027 18465 80.91.229.3 (26 Dec 2015 17:30:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 26 Dec 2015 17:30:27 +0000 (UTC) Cc: larsi@gnus.org, 17173@debbugs.gnu.org To: Eli Zaretskii , Drew Adams Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Dec 26 18:30:14 2015 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 1aCsfU-0007sa-GL for geb-bug-gnu-emacs@m.gmane.org; Sat, 26 Dec 2015 18:30:12 +0100 Original-Received: from localhost ([::1]:39366 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCsfT-0006hx-JZ for geb-bug-gnu-emacs@m.gmane.org; Sat, 26 Dec 2015 12:30:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56241) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCsfQ-0006hg-AA for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 12:30:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aCsfL-0007zX-BR for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 12:30:08 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:34337) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCsfL-0007zT-8A for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 12:30:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aCsfL-0003I0-4L for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 12:30:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Drew Adams Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 26 Dec 2015 17:30:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17173 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 17173-submit@debbugs.gnu.org id=B17173.145115096512526 (code B ref 17173); Sat, 26 Dec 2015 17:30:03 +0000 Original-Received: (at 17173) by debbugs.gnu.org; 26 Dec 2015 17:29:25 +0000 Original-Received: from localhost ([127.0.0.1]:41935 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aCsej-0003Fy-Lr for submit@debbugs.gnu.org; Sat, 26 Dec 2015 12:29:25 -0500 Original-Received: from userp1040.oracle.com ([156.151.31.81]:25561) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aCsei-0003Fl-Ib for 17173@debbugs.gnu.org; Sat, 26 Dec 2015 12:29:25 -0500 Original-Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id tBQHTHAk023670 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Sat, 26 Dec 2015 17:29:17 GMT Original-Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userv0022.oracle.com (8.13.8/8.13.8) with ESMTP id tBQHTGci019326 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Sat, 26 Dec 2015 17:29:16 GMT Original-Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by userv0122.oracle.com (8.13.8/8.13.8) with ESMTP id tBQHTG8Y010614; Sat, 26 Dec 2015 17:29:16 GMT In-Reply-To: <<83a8oxi2i8.fsf@gnu.org>> X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.9 (901082) [OL 12.0.6691.5000 (x86)] X-Source-IP: userv0022.oracle.com [156.151.31.74] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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:110709 Archived-At: > We (mostly Stefan) made redisplay faster by removing some triggers > that would redraw windows unnecessarily. Such optimizations always > leave some fallout that needs to be fixed. >=20 > It is impossible to fix these problems without a reproducible recipe. > The only alternative is to wait for someone else to come up with a bug > report and a recipe, which will solve this problem as a side effect. I understand. If there is no way to correlate the source changes made with the bug report, and so lots of such source changes could affect this, then the bug report cannot help. Feel free to close it in that case. Hopefully another report will come along, with more precise info. Maybe, when such wholesale optimizations are made in the future, some debug code can be added, so that symptoms such as I reported can more easily be traced to particular source changes? Is that feasible? My impression is that this is not the only bug report about failures to redisplay properly in Emacs 25. Seems like we have, on the one hand, lots of redisplay optimizations implemented together, or within a short timespan, and a fair number of redisplay problems reported, and no specific, operational connections made between the two. If so, that's too bad.