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: Scrolling commands and skipping redisplay, was: Re: emacs rendering comparisson between emacs23 and emacs26.3 Date: Thu, 09 Apr 2020 22:20:34 +0300 Message-ID: <83369co48t.fsf@gnu.org> References: <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> <20200405195753.GG5049@ACM> <542b48ba-4dfa-820f-ba50-4b147ab6d8e2@yandex.ru> <0a5f70aa-4985-8f8d-81d6-6ac4a60a94f9@yandex.ru> <838sj8sphk.fsf@gnu.org> <834ktwsmfw.fsf@gnu.org> <83imibqsmm.fsf@gnu.org> <478c2aab-a5fc-61c2-02e2-2d9846b95273@yandex.ru> <83v9m9nltx.fsf@gnu.org> <4c5ebff1-39ab-3d63-6118-42befc93b862@yandex.ru> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="103143"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rms@gnu.org, emacs-devel@gnu.org, rudalics@gmx.at, rrandresf@gmail.com, monnier@iro.umontreal.ca, acm@muc.de To: Dmitry Gutov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Apr 09 21:21:44 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 1jMckC-000QlM-Gd for ged-emacs-devel@m.gmane-mx.org; Thu, 09 Apr 2020 21:21:44 +0200 Original-Received: from localhost ([::1]:54466 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMckB-0002TZ-Iv for ged-emacs-devel@m.gmane-mx.org; Thu, 09 Apr 2020 15:21:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58103) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMcjY-000235-MB for emacs-devel@gnu.org; Thu, 09 Apr 2020 15:21:05 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:53915) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jMcjX-0002on-RN; Thu, 09 Apr 2020 15:21:03 -0400 Original-Received: from [176.228.60.248] (port=1290 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jMcjQ-0004ch-6m; Thu, 09 Apr 2020 15:20:57 -0400 In-Reply-To: <4c5ebff1-39ab-3d63-6118-42befc93b862@yandex.ru> (message from Dmitry Gutov on Thu, 9 Apr 2020 21:37:08 +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:246726 Archived-At: > From: Dmitry Gutov > Date: Thu, 9 Apr 2020 21:37:08 +0300 > Cc: acm@muc.de, rudalics@gmx.at, rrandresf@gmail.com, rms@gnu.org, > emacs-devel@gnu.org > > On 09.04.2020 16:19, Stefan Monnier wrote: > > BTW, you can also set `jit-lock-defer-time` to 0 in which case jit-lock > > is deferred iff there's input pending. > > [ This refinement of `jit-lock-defer-time` was introduced last time > > this kind of discussion took place, which is also the time > > `fast-but-imprecise-scrolling` was introduced. ] > > Thanks. I tried it (and mentioned in the parent thread), but it seems > like in addition to the downsides of f-b-i-s (imprecise scrolling, which > apparently makes it a bad candidate for default behavior) it adds some > extra flickering from time to time (I figured because some redisplays > occurred before the idle timer had the chance to run). Which is why I don't think using 0 is such a good idea.