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: Mon, 20 Apr 2020 14:51:07 -0400 Message-ID: References: <20200403174757.GA8266@ACM> <83ftd9kwlu.fsf@gnu.org> <1de9d24f-eeb7-7d0a-3768-4baba4365066@yandex.ru> <83zhbcdmyi.fsf@gnu.org> <61f565cd-4fee-d48c-a9ef-b78419b3d058@yandex.ru> <83wo6ed4kb.fsf@gnu.org> <464b5639-7790-fdbc-b519-22a6b0e8c016@yandex.ru> <83o8rqaucp.fsf@gnu.org> <551c7634-f614-c5a7-c089-33a0dc56574d@yandex.ru> <83imhyaqyw.fsf@gnu.org> <3ddcec07-079f-18e8-81a7-76eaf9a8187a@yandex.ru> <83d083ia16.fsf@gnu.org> <83y2qqgrr6.fsf@gnu.org> <837dyagkwm.fsf@gnu.org> <532544ab-55ec-aab9-1c2f-fa0081332401@yandex.ru> <834ktegivn.fsf@gnu.org> <83y2qqf29e.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="4114"; 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 Mon Apr 20 20:52:06 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 1jQbWY-0000xt-6r for ged-emacs-devel@m.gmane-mx.org; Mon, 20 Apr 2020 20:52:06 +0200 Original-Received: from localhost ([::1]:40846 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQbWX-0005Ag-3z for ged-emacs-devel@m.gmane-mx.org; Mon, 20 Apr 2020 14:52:05 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47392 helo=eggs1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQbVm-0004WV-LG for emacs-devel@gnu.org; Mon, 20 Apr 2020 14:51:18 -0400 Original-Received: from Debian-exim by eggs1p.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jQbVk-0002EW-Fm for emacs-devel@gnu.org; Mon, 20 Apr 2020 14:51:16 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:25160) by eggs1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jQbVg-00026T-36; Mon, 20 Apr 2020 14:51:12 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 242F84502AD; Mon, 20 Apr 2020 14:51:10 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id A16B74502A6; Mon, 20 Apr 2020 14:51:08 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1587408668; bh=/7KWISw3jD5x4wCZRoP9c7VFM7V3kzRZmBx8cqPWUs4=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=h0rvKAbWajV3lwXk5QI5ZQtLQaxencvbuSNBnmzKAw0KhRqzB8hiQjSyP+vedma41 xQYI6aJM91SD7wnRsnivE+fC6gKStkrqfqIerRg/9M4If+4WBVn5tYRd7Zet1lxtAa r/3LRSp3wsGsTQv7yV+UidtXTP4eLGd8gY0FYsmQ/JR7ZkGPe7qWEyl6erXH6q2Iqh RFiWb16hhBggm5nlvhd+UAZk/MUoPMCzlW18OyI7FhB+4am/FWbqGB3aMhG1YvMlcD brY/q9Plsv0wQczeMVfMTunuyZYYNmSEca4z3v4Uc/ufUYNgdS5xoDsOnF/YH2SOWi j2Xt9bustEy2g== Original-Received: from alfajor (unknown [104.247.241.114]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 4F557120308; Mon, 20 Apr 2020 14:51:08 -0400 (EDT) In-Reply-To: <83y2qqf29e.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 20 Apr 2020 21:19:57 +0300") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-detected-operating-system: by eggs1p.gnu.org: First seen = 2020/04/20 09:09:43 X-ACL-Warn: Detected OS = 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:247415 Archived-At: > by the canonical line height, it doesn't count screen lines. So if > some lines in the buffer are displayed taller than the default face, > you will see a lot of recentering regardless of what you do. Good point. So any "unusual" character which ends up selecting a different font that happens to be slightly taller will disrupt the "conservative" scroll. Tho, I guess we should consider "1" as meaning "strictly smaller than 2.0", in which case a line would have to be twice as tall as a normal line before we cause a recenter. > I very much doubt this is worth the complexity. Fair enough. Stefan