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 Date: Sat, 11 Apr 2020 16:45:02 +0300 Message-ID: <83pncekug1.fsf@gnu.org> References: <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> <20200411132126.GA6682@ACM> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="80390"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rudalics@gmx.at, rrandresf@gmail.com, emacs-devel@gnu.org, rms@gnu.org, dgutov@yandex.ru To: Alan Mackenzie Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Apr 11 15:47:19 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 1jNGTf-000KrD-K0 for ged-emacs-devel@m.gmane-mx.org; Sat, 11 Apr 2020 15:47:19 +0200 Original-Received: from localhost ([::1]:52130 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jNGTe-0000sm-MB for ged-emacs-devel@m.gmane-mx.org; Sat, 11 Apr 2020 09:47:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36418) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jNGRq-00083Y-MN for emacs-devel@gnu.org; Sat, 11 Apr 2020 09:45:27 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:43517) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jNGRo-00021I-Im; Sat, 11 Apr 2020 09:45:25 -0400 Original-Received: from [176.228.60.248] (port=1410 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jNGRh-0004a8-Bt; Sat, 11 Apr 2020 09:45:17 -0400 In-Reply-To: <20200411132126.GA6682@ACM> (message from Alan Mackenzie on Sat, 11 Apr 2020 13:21:26 +0000) 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:246833 Archived-At: > Date: Sat, 11 Apr 2020 13:21:26 +0000 > From: Alan Mackenzie > Cc: rudalics@gmx.at, rrandresf@gmail.com, rms@gnu.org, emacs-devel@gnu.org > > My personal view: As defaults, I think (i)a and (ii)a are bad, due > to the long intervals Emacs appears to have hung in. Of (i)b and (ii)b, > I think (i)b is better, since it avoids the "twinkling" of (ii)b. > > I dislike (iii)a,b because of the appearance of non-fontified screens, > but particularly because the last screen gets fontified in situ after > first appearing unfontified. I think the non-fontification looks poor > to a user, even though the scrolling is smooth. > > If it were up to me to chose a default setting, I would prefer (i)b, > closely followed by (ii)b. Disclosure: I didn't implement any of these options. I dislike (i)b and (ii)b because they are jerky, and because when I stop leaning on C-v, I have a lot of screen to watch scrolling, until Emacs starts executing new commands. I guess my auto-repeat rate is higher than Alan's. or maybe it's because I'm trying this in a GUI frame, not a TTY frame. My favorite (if one needs to alleviate the default, where Emacs hangs -- I never actually lean on C-v for prolonged times, except for testing this very issue) is (iii)a, because it gives me an uninterrupted scrolling and immediate response once I release C-v.