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 09:19:45 -0400 Message-ID: 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> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="72070"; 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 15:20:40 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 1jMX6m-000IfY-L6 for ged-emacs-devel@m.gmane-mx.org; Thu, 09 Apr 2020 15:20:40 +0200 Original-Received: from localhost ([::1]:49164 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMX6l-0003VQ-Nf for ged-emacs-devel@m.gmane-mx.org; Thu, 09 Apr 2020 09:20:39 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57063) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMX62-0002lN-UE for emacs-devel@gnu.org; Thu, 09 Apr 2020 09:19:55 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jMX60-00074f-Gn for emacs-devel@gnu.org; Thu, 09 Apr 2020 09:19:54 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:44973) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jMX5x-000719-UL; Thu, 09 Apr 2020 09:19:50 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id EC55344FED5; Thu, 9 Apr 2020 09:19:48 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 7894444FE41; Thu, 9 Apr 2020 09:19:47 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1586438387; bh=6aJxNWWbu86tCQ/lV3HIqVhbfVHFtBxFFB8hf/t7+0Y=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=b2Pvym2v5kD6EBFlh7mG70AFODvo3w/A9fO3+EiNVC1pqVuqWLSsiDmc4AMrcyuJ+ IBz7AjhXLqYCjKX56pszpMvSweKR7RGrlxghwvalI3cDwp8U58eiEPp2NFLHxMzg6s xtIHE/J/6WQT0OqtCld6wRegAXY1T1qwW6AYpUm00rjRl4QrkDQ0rom+QntrOay45N bMxBa0mNkC26JbG0px/br/TFsbdG6TUrjCGc++KhT5IWuaWyF+E9mCyKgp0wmNIGKg 4njWC0SQjEtcYREMX9qeNA8lHQPaZO8RBQLiM3/xpa+Ea742c8UdMUvXGcJerYEDxc Rz/Yr706+RSWw== Original-Received: from alfajor (unknown [104.247.241.114]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id DB90E1206B5; Thu, 9 Apr 2020 09:19:46 -0400 (EDT) In-Reply-To: <83v9m9nltx.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 09 Apr 2020 10:46:02 +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:246708 Archived-At: > More generally, I don't think I see how even this proposal makes > something clearly better. We already have jit-lock-defer-time; people > who have slow machines are advised to set that to something like 0.1 > or 0.25, and they can have scrolling that is way faster than with > fast-but-imprecise-scrolling (and with the same tradeoff of making > scrolling "imprecise"). Why invent kludges when we already have a > better solution that was there since Emacs 21? 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. ] Stefan