From debbugs-submit-bounces@debbugs.gnu.org Tue Jun 28 09:03:31 2016 Received: (at submit) by debbugs.gnu.org; 28 Jun 2016 13:03:31 +0000 Received: from localhost ([127.0.0.1]:58848 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bHsfq-0005LG-Vn for submit@debbugs.gnu.org; Tue, 28 Jun 2016 09:03:31 -0400 Received: from eggs.gnu.org ([208.118.235.92]:43124) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bHsfp-0005L4-30 for submit@debbugs.gnu.org; Tue, 28 Jun 2016 09:03:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bHsfg-0002JP-6o for submit@debbugs.gnu.org; Tue, 28 Jun 2016 09:03:24 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50,FREEMAIL_FROM autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:52452) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHsfg-0002J0-3R for submit@debbugs.gnu.org; Tue, 28 Jun 2016 09:03:20 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34059) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHsfZ-0005fc-AJ for bug-gnu-emacs@gnu.org; Tue, 28 Jun 2016 09:03:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bHsfV-0002Ha-57 for bug-gnu-emacs@gnu.org; Tue, 28 Jun 2016 09:03:12 -0400 Received: from [219.88.242.22] (port=42843 helo=mail.orcon.net.nz) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHsfU-0002HK-Ks for bug-gnu-emacs@gnu.org; Tue, 28 Jun 2016 09:03:09 -0400 Received: from [192.168.20.100] ([150.107.172.69]) (authenticated bits=0) by mail.orcon.net.nz (8.14.3/8.14.3/Debian-9.4) with ESMTP id u5SD30Y9022203 for ; Wed, 29 Jun 2016 01:03:01 +1200 Subject: 25.1.50; fast-but-imprecise-scrolling: What does "somewhat inaccurate" mean? To: bug-gnu-emacs@gnu.org References: <20160615222015.GA4813@acm.fritz.box> <5770C84E.30208@gmx.at> <83h9cey4t3.fsf@gnu.org> <57715AE5.3030109@gmx.at> <83furyxwc1.fsf@gnu.org> <577233F8.3000603@gmx.at> <20160628091811.GA3181@acm.fritz.box> From: Phil Sainty Message-ID: <57727584.3060502@orcon.net.nz> Date: Wed, 29 Jun 2016 01:03:00 +1200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <20160628091811.GA3181@acm.fritz.box> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Bayes-Prob: 0.0001 (Score 0: No Bayes scoring rules defined, tokens from: outbound) X-CanIt-Geo: ip=150.107.172.69; country=NZ; region=Auckland; city=Auckland; latitude=-36.8667; longitude=174.7667; http://maps.google.com/maps?q=-36.8667,174.7667&z=6 X-CanItPRO-Stream: base:outbound X-Canit-Stats-ID: 01Rcd31Wu - 97f9160a9ace - 20160629 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -5.0 (-----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.0 (-----) It's unclear to me what the following excerpt from the docstring for the `fast-but-imprecise-scrolling' variable actually means: > Note that this optimization can cause the portion of the buffer > displayed after a scrolling operation to be somewhat inaccurate. "somewhat inaccurate" is incredibly vague if you don't already know what it means. Does it mean that the position scrolled to might be further (or less far) than it would have been otherwise? Does it mean that the font-locking may be incomplete or incorrect? Does it mean that the buffer text may appear corrupted?! I certainly can't tell what it means. It would be good if that text was clarified. From debbugs-submit-bounces@debbugs.gnu.org Tue Jun 28 12:15:32 2016 Received: (at 23861) by debbugs.gnu.org; 28 Jun 2016 16:15:32 +0000 Received: from localhost ([127.0.0.1]:59263 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bHvfg-0001lX-Ex for submit@debbugs.gnu.org; Tue, 28 Jun 2016 12:15:32 -0400 Received: from eggs.gnu.org ([208.118.235.92]:42832) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bHvff-0001lL-Or for 23861@debbugs.gnu.org; Tue, 28 Jun 2016 12:15:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bHvfX-0004TJ-DK for 23861@debbugs.gnu.org; Tue, 28 Jun 2016 12:15:26 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_50,RP_MATCHES_RCVD autolearn=disabled version=3.3.2 Received: from fencepost.gnu.org ([2001:4830:134:3::e]:57311) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHvfX-0004T4-AR; Tue, 28 Jun 2016 12:15:23 -0400 Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4386 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bHvfV-0001BJ-Ek; Tue, 28 Jun 2016 12:15:21 -0400 Date: Tue, 28 Jun 2016 19:14:58 +0300 Message-Id: <8337nxxpbx.fsf@gnu.org> From: Eli Zaretskii To: Phil Sainty In-reply-to: <57727584.3060502@orcon.net.nz> (message from Phil Sainty on Wed, 29 Jun 2016 01:03:00 +1200) Subject: Re: bug#23861: 25.1.50; fast-but-imprecise-scrolling: What does "somewhat inaccurate" mean? References: <20160615222015.GA4813@acm.fritz.box> <5770C84E.30208@gmx.at> <83h9cey4t3.fsf@gnu.org> <57715AE5.3030109@gmx.at> <83furyxwc1.fsf@gnu.org> <577233F8.3000603@gmx.at> <20160628091811.GA3181@acm.fritz.box> <57727584.3060502@orcon.net.nz> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-Spam-Score: -6.3 (------) X-Debbugs-Envelope-To: 23861 Cc: 23861@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Eli Zaretskii Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -6.3 (------) > From: Phil Sainty > Date: Wed, 29 Jun 2016 01:03:00 +1200 > > It's unclear to me what the following excerpt from the docstring > for the `fast-but-imprecise-scrolling' variable actually means: > > > Note that this optimization can cause the portion of the buffer > > displayed after a scrolling operation to be somewhat inaccurate. > > "somewhat inaccurate" is incredibly vague if you don't already > know what it means. It means that what's on the screen might not reflect what's in the buffer. It's hard to tell anything more specific, since which redisplay optimizations will be taken in each case depends on many factors on which the user has no control. > Does it mean that the position scrolled to might be further (or > less far) than it would have been otherwise? It could. > Does it mean that the font-locking may be incomplete or incorrect? It could. > Does it mean that the buffer text may appear corrupted?! It could, if faces change the font size. From debbugs-submit-bounces@debbugs.gnu.org Mon Oct 14 08:35:47 2019 Received: (at 23861-done) by debbugs.gnu.org; 14 Oct 2019 12:35:47 +0000 Received: from localhost ([127.0.0.1]:38308 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iJzZi-00080P-VM for submit@debbugs.gnu.org; Mon, 14 Oct 2019 08:35:47 -0400 Received: from mail-pf1-f177.google.com ([209.85.210.177]:42687) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iJzZe-000809-0l for 23861-done@debbugs.gnu.org; Mon, 14 Oct 2019 08:35:42 -0400 Received: by mail-pf1-f177.google.com with SMTP id q12so10336537pff.9 for <23861-done@debbugs.gnu.org>; Mon, 14 Oct 2019 05:35:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=tYbMYqnszVJ11bwsf9Z/HVXTn5J9wqLBzE/06Np4WbM=; b=H7DBqrxE6RIUAzZyorekooUZztJmVizgmFu6jkqAmnY5iXv7KCdnzsKjoRut4lAfxs 5kZfaqrpMrnSxrc3egrbq9XykBs2O04/a9cuy0/nyLCGxp097cGNtqdnlCnsI3AMh7kj tR0eBwrozWNCQW0gFDQBAYE8XGFPm6OKwAZl5zJhIwczbA49T9VvmFtLIU2EBhm0k4Hb esbH8ju5FDkPX9lvWiOVKojrJuY6u5e6r6vZAotAQajTwV6BWlC6Dgj1r3p1u9BmspSs 1iyyM6m0IYuCNXQJ3JRqWJAYPXSQ9F/vlXw6drJbmTt8RZhRUbswVCyBV1Wl1MpZ3jQg q4iA== X-Gm-Message-State: APjAAAWxMW0FHDgOxAle5hpM6fFdEFKdC2oaL5UtV/hnAOGP7UAShMYd cqjl18y2NdytysKuhQTNBg6xjAaL1f/lIYDv0tAP5kZJ X-Google-Smtp-Source: APXvYqwpLFyaOU6ASqh/HcFvToBI8XHPUZ6IX0F6UCm/7yuQJEvZwjSSr+5+43CpGOoYNMOHb9TpWXNozbFAXAvyoKg= X-Received: by 2002:a63:c10:: with SMTP id b16mr34350276pgl.333.1571056536307; Mon, 14 Oct 2019 05:35:36 -0700 (PDT) MIME-Version: 1.0 From: Stefan Kangas Date: Mon, 14 Oct 2019 14:35:25 +0200 Message-ID: Subject: Re: bug#23861: 25.1.50; fast-but-imprecise-scrolling: What does "somewhat inaccurate" mean? To: Eli Zaretskii Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.3 (/) X-Debbugs-Envelope-To: 23861-done Cc: Phil Sainty , 23861-done@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.7 (/) Eli Zaretskii writes: >> From: Phil Sainty >> Date: Wed, 29 Jun 2016 01:03:00 +1200 >> >> It's unclear to me what the following excerpt from the docstring >> for the `fast-but-imprecise-scrolling' variable actually means: >> >> > Note that this optimization can cause the portion of the buffer >> > displayed after a scrolling operation to be somewhat inaccurate. >> >> "somewhat inaccurate" is incredibly vague if you don't already >> know what it means. > > It means that what's on the screen might not reflect what's in the > buffer. > > It's hard to tell anything more specific, since which redisplay > optimizations will be taken in each case depends on many factors on > which the user has no control. > >> Does it mean that the position scrolled to might be further (or >> less far) than it would have been otherwise? > > It could. > >> Does it mean that the font-locking may be incomplete or incorrect? > > It could. > >> Does it mean that the buffer text may appear corrupted?! > > It could, if faces change the font size. That was 3 years ago. It doesn't look like there is anything more to do here, so I'm closing this bug report. Please reopen the bug if that's incorrect. Best regards, Stefan Kangas From unknown Mon Aug 18 15:39:49 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Tue, 12 Nov 2019 12:24:10 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator