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#17173: 24.4.50; Emacs partially loses display, and redisplay via `C-l' does not fix it Date: Sat, 26 Dec 2015 20:20:12 +0200 Message-ID: <834mf5hy1v.fsf@gnu.org> 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>> <970cb5d6-b017-4aad-be69-0628c5792fd3@default> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1451154026 9693 80.91.229.3 (26 Dec 2015 18:20:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 26 Dec 2015 18:20:26 +0000 (UTC) Cc: larsi@gnus.org, 17173@debbugs.gnu.org To: Drew Adams Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Dec 26 19:20:15 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 1aCtRt-0002RL-KK for geb-bug-gnu-emacs@m.gmane.org; Sat, 26 Dec 2015 19:20:13 +0100 Original-Received: from localhost ([::1]:39512 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCtRs-0006dw-RV for geb-bug-gnu-emacs@m.gmane.org; Sat, 26 Dec 2015 13:20:12 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:38163) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCtRm-0006a8-Rh for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 13:20:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aCtRj-0002ro-59 for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 13:20:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:34487) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCtRj-0002rk-1Y for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 13:20:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84) (envelope-from ) id 1aCtRi-0007x2-UE for bug-gnu-emacs@gnu.org; Sat, 26 Dec 2015 13:20:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 26 Dec 2015 18:20:02 +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=B17173.145115397830507 (code B ref 17173); Sat, 26 Dec 2015 18:20:02 +0000 Original-Received: (at 17173) by debbugs.gnu.org; 26 Dec 2015 18:19:38 +0000 Original-Received: from localhost ([127.0.0.1]:42085 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aCtRK-0007vy-En for submit@debbugs.gnu.org; Sat, 26 Dec 2015 13:19:38 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:47099) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aCtRJ-0007vk-E9 for 17173@debbugs.gnu.org; Sat, 26 Dec 2015 13:19:37 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aCtRA-0002lp-Gl for 17173@debbugs.gnu.org; Sat, 26 Dec 2015 13:19:32 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:54804) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aCtRA-0002lj-D6; Sat, 26 Dec 2015 13:19:28 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1602 helo=HOME-C4E4A596F7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aCtR8-0005ds-Kr; Sat, 26 Dec 2015 13:19:28 -0500 In-reply-to: <970cb5d6-b017-4aad-be69-0628c5792fd3@default> (message from Drew Adams on Sat, 26 Dec 2015 09:29:16 -0800 (PST)) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:110726 Archived-At: > Date: Sat, 26 Dec 2015 09:29:16 -0800 (PST) > From: Drew Adams > Cc: larsi@gnus.org, 17173@debbugs.gnu.org > > 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? We have the debug code. I myself use it all the time, and several times asked people who reported bugs to enable it and show the output. But it produces a lot of output, so it is only feasible to turn it on when running a reproducible recipe. Which we don't have in this case. > 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. There were indeed several reports about redisplay problems, related to those changes. They were all fixed, AFAICT, because each one eventually succeeded to find a recipe for reproducing the problem.