From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Tick Reduction Date: Sat, 20 Nov 2021 10:01:34 -0500 Message-ID: References: <87bl2hyzca.fsf@gnus.org> <835ysoursn.fsf@gnu.org> <831r3cugcp.fsf@gnu.org> <83y25judps.fsf@gnu.org> <83tug7tjww.fsf@gnu.org> <83tug7rm0c.fsf@gnu.org> <83lf1isxmj.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="33209"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: larsi@gnus.org, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Nov 20 16:02:46 2021 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 1moRt7-0008Qu-9h for ged-emacs-devel@m.gmane-mx.org; Sat, 20 Nov 2021 16:02:45 +0100 Original-Received: from localhost ([::1]:38734 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1moRt6-0007S6-6F for ged-emacs-devel@m.gmane-mx.org; Sat, 20 Nov 2021 10:02:44 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:34290) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1moRsG-00063j-QV for emacs-devel@gnu.org; Sat, 20 Nov 2021 10:01:53 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:20385) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1moRs3-0000Ww-Oa; Sat, 20 Nov 2021 10:01:42 -0500 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 7DCC9440A9F; Sat, 20 Nov 2021 10:01:37 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id ED48A440A28; Sat, 20 Nov 2021 10:01:35 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1637420495; bh=lhFqGdxi3P9f4R0Dr63uOa1wTm8ZPH+1qSUbplsSg9Q=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=K/aIguXvbXOuwSY4hM7DVfW3eSSkdmHQQVWxi+5qZy+OYTwZkPGB8PRtjSXAH+FWJ ZDK1rGwEWisJt1Gn88i0GMAmjL5Angbhd42BGbCEo3ZuBNE7/Zkh3RtEssDT6MiFe+ BR6sWmh9MfpsN/gatg2HXCm1+gq7gmoBwMw2oQN6khUW0gx90oLD+zJKL9aW0ata8y SMpFGpRFxKAD23ywPLJ8LdrD2pf0Q6AU5JW55AN1MQNuz59Vo4doA08+LCwmhAHzLi LwmIYTAVNUse4DlznbDiclIlwJHt50PHUPZUaDV/MRkB8e62NbJBvwm6fdXFImyl2x JM48gysqkVTlA== Original-Received: from pastel (unknown [216.154.30.173]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id B7D501201BD; Sat, 20 Nov 2021 10:01:35 -0500 (EST) In-Reply-To: <83lf1isxmj.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 20 Nov 2021 16:35:48 +0200") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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:279809 Archived-At: >> That completely depends on what the "redisplay emulation" code does. >> It could opt to use the old (unreliable) glyph matrix to compute its >> (documented as unreliable =F0=9F=99=8D) info, in which case it could end= up >> breaking less often (but more spectacularly when it does)? > > As I explained earlier, that code cannot use the glyph matrix, because > it is required to work with text that is not displayed at all. It could use it opportunistically when it's available. Stefan