From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Stefan Monnier 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 15:33:58 -0400 Message-ID: References: <20200403174757.GA8266@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> <83369co48t.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="30369"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: rms@gnu.org, emacs-devel@gnu.org, rudalics@gmx.at, rrandresf@gmail.com, Dmitry Gutov , acm@muc.de To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Apr 09 21:35:01 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 1jMcx2-0007ki-6j for ged-emacs-devel@m.gmane-mx.org; Thu, 09 Apr 2020 21:35:00 +0200 Original-Received: from localhost ([::1]:54594 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMcx1-0001oN-A2 for ged-emacs-devel@m.gmane-mx.org; Thu, 09 Apr 2020 15:34:59 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:59844) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMcw9-0001JQ-4Q for emacs-devel@gnu.org; Thu, 09 Apr 2020 15:34:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jMcw7-0002Mt-VZ for emacs-devel@gnu.org; Thu, 09 Apr 2020 15:34:04 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:16061) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jMcw6-0002Im-Fe; Thu, 09 Apr 2020 15:34:02 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 88BF744FEEA; Thu, 9 Apr 2020 15:34:00 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 497D144FEDD; Thu, 9 Apr 2020 15:33:59 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1586460839; bh=Ki1R19Rt/gYWr6pFeHhnKuiOjJQ2C2KGjOVhwu5QkV0=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=gvLiAjqdLXUhV01ryQycB6RzZhHh5lSznmfdGVZlRqEtPfzUch0UgBSneY9uwEhds 6st56RJD6NMPJsg1f5TAy6UcfS5SWutpZrHaJBlOAaIs22s4eFuhbH47e9tI7pOGGN 4FS9HSvwSeBAkl1N/rNX5zl13kT864Ajcqb7TfdDNuC4XwDBg9VOG+9rgdwFLjoA5b bFl+Ya+QJ+qmoqf75m43kGjqOGMi599UxEjsM1KlL4y7obz5fnZVqGI7c3Dk6kYmRR Go/6nY6tzvK6TIOItdz54tRVks0UJmAoZwiuaoAw3+Z2+3xws/XT4c+0UCCfnuCwEI 1XsPWi6clm57Q== Original-Received: from alfajor (unknown [104.247.241.114]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id DB2CA12079C; Thu, 9 Apr 2020 15:33:58 -0400 (EDT) In-Reply-To: <83369co48t.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 09 Apr 2020 22:20:34 +0300") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 132.204.25.50 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:246730 Archived-At: >> > 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. It's definitely not good enough to be used as a default value, agreed. Stefan