From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Dmitry Gutov 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 21:29:07 +0300 Message-ID: <66c68958-ca7d-7353-2ca6-d8476444965a@yandex.ru> References: <20200403174757.GA8266@ACM> <83eesvmj15.fsf@gnu.org> <6eec7f68-770e-b3b1-4627-6222f3ef7216@yandex.ru> <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; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="38884"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 Cc: acm@muc.de, rudalics@gmx.at, rrandresf@gmail.com, rms@gnu.org, emacs-devel@gnu.org To: Eli Zaretskii , Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Apr 20 20:30:02 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 1jQbBC-000A1O-30 for ged-emacs-devel@m.gmane-mx.org; Mon, 20 Apr 2020 20:30:02 +0200 Original-Received: from localhost ([::1]:40516 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQbBB-0006r1-63 for ged-emacs-devel@m.gmane-mx.org; Mon, 20 Apr 2020 14:30:01 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43256 helo=eggs1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQbAS-0006BL-EQ for emacs-devel@gnu.org; Mon, 20 Apr 2020 14:29:16 -0400 Original-Received: from Debian-exim by eggs1p.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jQbAS-0005zT-5g for emacs-devel@gnu.org; Mon, 20 Apr 2020 14:29:16 -0400 Original-Received: from mail-wm1-x32e.google.com ([2a00:1450:4864:20::32e]:50388) by eggs1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jQbAO-0005s4-Ho; Mon, 20 Apr 2020 14:29:12 -0400 Original-Received: by mail-wm1-x32e.google.com with SMTP id x25so669908wmc.0; Mon, 20 Apr 2020 11:29:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=x1oyINYTGAUz4GpK1KtdDHwMq1JsPoqds4I7iY1Pbyw=; b=cngGhka96Chv1h+o1k1DPvAgBwfKDR+78VouPmlwNu0euRgy7eQj8wHCEjLpNP2LQ4 O+rfVxrhNDtKe9UF7Zv3/vWGCCwe2AozlVvIG29V4oUeY9cOhkPgxNvyCN3JnwFQpdhl BXrywYHG7flufRvjJMo9EbnwCldIlyRnfQNmrYanKn13ocz2mOQmZpWMtp0jNRCIDpuc X2Q69TvWK/d+QdLqYYZwbluuhmLcyXp1XYK+ybJzwVsRjlnRIhinB4pLJp3cdmjIihQI KuX8Ia4qQVMvIcU2cjAUyb/W2PBt8z95SHSi5gpIQxHlkCNi/sE9+ARTISfkhaxbtycV qWDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:cc:references:from:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=x1oyINYTGAUz4GpK1KtdDHwMq1JsPoqds4I7iY1Pbyw=; b=umrurTVzEQRA4bvTk3fP2Wdxw9X4LDknTDhH+TW98EY/0xr0HrJFv1WSq2eYuqhBD5 SzxIaATXbJpPVQqPrtTj4gt3AgA+WFTQYKTSADbmSCjyVOP5T9EsxsCjYH5qmwk0FX2K O72ZX4T2w2Ew8vrmkVjCDxD5G8Et9XKF81xki6ps0L5lQMXBbufU1CZLQXUjDWKxodwj QB1xPaYgbjbdJHxyM09QHYSKe91nRjk3MmMuRfoHdfIep00zHiZhXy9/WBIBErpbElcz vZJcv/RROPyXWTR9YP78yitiyzd1Lh/rUL5BvfaOCWoQ/ZHWZ/FF8zEqPsL+q2zLanBV Eofw== X-Gm-Message-State: AGi0PuYx0ht1HOnhzTxoGuSqKKqFqWfcXqlYBpOV+X8BcYqmdyjZOsY2 Sg66c7Q2qoKF14Tnyuutw28= X-Google-Smtp-Source: APiQypJkCw1qIx6r+s8P5nW/kJx8gZg3bwo6LfzHXIEi9jatUGL7YP1Qo1pW+tn5R3hurIkgp4+0Hg== X-Received: by 2002:a1c:4d07:: with SMTP id o7mr726222wmh.59.1587407350653; Mon, 20 Apr 2020 11:29:10 -0700 (PDT) Original-Received: from [192.168.0.2] ([66.205.73.129]) by smtp.googlemail.com with ESMTPSA id h137sm1171870wme.0.2020.04.20.11.29.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Apr 2020 11:29:09 -0700 (PDT) In-Reply-To: <83y2qqf29e.fsf@gnu.org> Content-Language: en-US Received-SPF: pass client-ip=2a00:1450:4864:20::32e; envelope-from=raaahh@gmail.com; helo=mail-wm1-x32e.google.com X-detected-operating-system: by eggs1p.gnu.org: Error: [-] PROGRAM ABORT : Malformed IPv6 address (bad octet value). Location : parse_addr6(), p0f-client.c:67 X-Received-From: 2a00:1450:4864:20::32e 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:247414 Archived-At: On 20.04.2020 21:19, Eli Zaretskii wrote: > Btw, "line" in this context is actually the amount of pixels equal to > the canonical line height, not a physical line. When the display > engine counts "lines" for the purpose of comparison with the value of > scroll-conservatively, it actually counts pixels and then divides that > 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. I wonder if this was a result of some feature request. Sounds unnecessarily complex, IMHO.