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: Fri, 10 Apr 2020 10:41:10 -0400 Message-ID: References: <20200403174757.GA8266@ACM> <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> <83tv1rn8fx.fsf@gnu.org> <83o8rzmpfm.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="70962"; 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, dgutov@yandex.ru, acm@muc.de To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Apr 10 16:42:26 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 1jMurR-000IKd-QD for ged-emacs-devel@m.gmane-mx.org; Fri, 10 Apr 2020 16:42:25 +0200 Original-Received: from localhost ([::1]:35264 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMurQ-0002OU-Sn for ged-emacs-devel@m.gmane-mx.org; Fri, 10 Apr 2020 10:42:24 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52507) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jMuqT-0001A4-LF for emacs-devel@gnu.org; Fri, 10 Apr 2020 10:41:26 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jMuqS-0002Te-Hm for emacs-devel@gnu.org; Fri, 10 Apr 2020 10:41:25 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:64884) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jMuqI-0002PH-1f; Fri, 10 Apr 2020 10:41:14 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 6B35F81247; Fri, 10 Apr 2020 10:41:13 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id C5DE980D47; Fri, 10 Apr 2020 10:41:11 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1586529671; bh=1rmX0Iorad7XWZXHOBebO69wV/bi5rXFrOS9a5KJxlw=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=kOSBJtcFyvxsBdD2zA2e/qguMNbtgn0X85HJ7uwHVaaQAaw7aPh+OecKaM6VmLSPZ bWa6b+eHQw45umlbC4pHHQKLt6jnQgKbdKVTyp8Pyo9yIoBY7ino/gLgzDczRI9/fX c+Hs89ZXyi9pafV0k/Umd4yqVq+/nCFLX46VHM3wKker5E1ROPjLpxsfwwIAuLNxi2 mbNRfaad6IeNhROXYVB75sOpMwqsbmh9P+pDvn1jwksRYFOVp9AvFb84Nkz4skrQpn pUMzu7GdH5DG6b6esnmbi8Z9xKnmqxC1rFKugCTHvD8149zeunvZo3x/Ss/gfQKQpM OaAKvYMl5TlDg== Original-Received: from alfajor (unknown [104.247.241.114]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 30D791204E9; Fri, 10 Apr 2020 10:41:11 -0400 (EDT) In-Reply-To: (Stefan Monnier's message of "Fri, 10 Apr 2020 10:29:07 -0400") 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:246762 Archived-At: >>> > Depends on what you mean by "precision". They might very well miss >>> > some parts of the buffer entirely, i.e. never see them on display. >>> But that happens regardless of whether the scroll is computed correctly, >>> because redisplay itself is skipped. >> It isn't skipped here if I use jit-lock-defer-time. > I was talking about `fast-but-imprecise-scrolling`, not about > `jit-lock-defer-time` (I thought that's what your use of "precision" > implied). Please disregard this answer, I was confused about what I had written. I think my earlier answer was not about `fast-but-imprecise-scrolling` specifically but about the case where you lean on `C-v`. Stefan