From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: emacs rendering comparisson between emacs23 and emacs26.3 Date: Tue, 07 Apr 2020 22:22:43 +0300 Message-ID: <837dyrqews.fsf@gnu.org> References: <834ku43c61.fsf@gnu.org> <83k12zz6ds.fsf@gnu.org> <054393f3-3873-ab6e-b325-0eca354d8838@gmx.at> <20200403174757.GA8266@ACM> <20200404104553.GA5329@ACM> <07fe3b69-3ab2-3173-0696-cb17809e2b91@gmx.at> <83blo7v68b.fsf@gnu.org> <1845d7aa-9ae4-3d95-6a30-c7b1d8d8adec@gmx.at> <83a73qt6zs.fsf@gnu.org> <97c4254e-ff43-8402-3645-f713c408c245@gmx.at> <83y2r9syby.fsf@gnu.org> <83v9mdssqx.fsf@gnu.org> <679ab47b-6e3e-65e6-f955-be58d59ed092@yandex.ru> <83sghhss8v.fsf@gnu.org> <671b5b41-663d-5ab9-f022-dc6c5ce54dd0@yandex.ru> <83r1x1sqkx.fsf@gnu.org> <83lfn9s63n.fsf@gnu.org> <83h7xvqsgc.fsf@gnu.org> <90749329-ccb1-f96e-29c0-b4ecbb81d1d4@yandex.ru> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="74230"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rudalics@gmx.at, rrandresf@gmail.com, rms@gnu.org, acm@muc.de, emacs-devel@gnu.org To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Apr 07 21:23:42 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jLtoz-000JD6-MZ for ged-emacs-devel@m.gmane-mx.org; Tue, 07 Apr 2020 21:23:41 +0200 Original-Received: from localhost ([::1]:52362 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLtoy-00021Q-Nh for ged-emacs-devel@m.gmane-mx.org; Tue, 07 Apr 2020 15:23:40 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47940) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jLtoF-0001RR-ST for emacs-devel@gnu.org; Tue, 07 Apr 2020 15:22:56 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:34935) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jLtoE-00010m-P3; Tue, 07 Apr 2020 15:22:54 -0400 Original-Received: from [176.228.60.248] (port=2345 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jLto7-0005oG-Ho; Tue, 07 Apr 2020 15:22:48 -0400 In-Reply-To: <90749329-ccb1-f96e-29c0-b4ecbb81d1d4@yandex.ru> (message from Dmitry Gutov on Tue, 7 Apr 2020 18:04:13 +0300) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:246621 Archived-At: > From: Dmitry Gutov > Date: Tue, 7 Apr 2020 18:04:13 +0300 > Cc: rudalics@gmx.at, rrandresf@gmail.com, emacs-devel@gnu.org, rms@gnu.org, > acm@muc.de > > Scenarios which are slow no matter what probably deserve a separate bug > report each Agreed, let's get that ball rolling. > and are likely fixable without significant redesign. Unfortunately, I'm not as optimistic as you on that one. So here's the first bug report about a random slowness in CC Mode: . visit src/w32.c on the emacs-27 branch and go to line 8747 . C-e DEL -- this deletes the last 'e' of "else" . the following line gets immediately fontified as a function name . type 'e' -- then watch how the fontification of the next line to its original face takes almost 1 sec -- this is the problem FTR, this is in Emacs 27.0.90 built with -Og, but a -O2 compilation of Emacs 26.3 takes only slightly less time in this case. (I will file a formal bug report about this if Alan wants me to.)