From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.bugs Subject: bug#18195: 24.3.92; window-screen-lines is not accurate Date: Wed, 06 Aug 2014 01:21:56 +0400 Message-ID: <53E14AF4.6050804@yandex.ru> References: <86tx5r7l1j.fsf@yandex.ru> <53E097F7.5050407@gmx.at> <53E0ABF9.7070506@yandex.ru> <8338dbqcai.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1407273809 28129 80.91.229.3 (5 Aug 2014 21:23:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 5 Aug 2014 21:23:29 +0000 (UTC) Cc: 18195@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Aug 05 23:23:21 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XEmCW-0007s5-Pz for geb-bug-gnu-emacs@m.gmane.org; Tue, 05 Aug 2014 23:23:20 +0200 Original-Received: from localhost ([::1]:34080 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEmCW-00078o-9A for geb-bug-gnu-emacs@m.gmane.org; Tue, 05 Aug 2014 17:23:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60869) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEmCM-00077o-CZ for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 17:23:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XEmCE-0005XM-Tp for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 17:23:10 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:52361) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEmCE-0005XI-QE for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 17:23:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XEmCE-0004zx-9d for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 17:23:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Dmitry Gutov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 05 Aug 2014 21:23:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18195 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18195-submit@debbugs.gnu.org id=B18195.140727373719151 (code B ref 18195); Tue, 05 Aug 2014 21:23:02 +0000 Original-Received: (at 18195) by debbugs.gnu.org; 5 Aug 2014 21:22:17 +0000 Original-Received: from localhost ([127.0.0.1]:59304 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XEmBU-0004yo-Do for submit@debbugs.gnu.org; Tue, 05 Aug 2014 17:22:16 -0400 Original-Received: from mail-lb0-f171.google.com ([209.85.217.171]:33030) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XEmBR-0004yU-C4 for 18195@debbugs.gnu.org; Tue, 05 Aug 2014 17:22:14 -0400 Original-Received: by mail-lb0-f171.google.com with SMTP id l4so1230341lbv.30 for <18195@debbugs.gnu.org>; Tue, 05 Aug 2014 14:22:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=wvWA0YmQC+cOsoDXQHnYa8wriL5JNV8N9ymgjs1Lpeo=; b=yxDqPTXqbe+KtB1q7anvbD3UlfEkVnIgUzR3iQrZrWODs/172/qH6tsixBFjBMJwlP ZHYaAtk4BLq3CPgWXqf9utgUPijqBBwtERLnHBI9SJNB3160ou4Cw3OmqN5gD21shyzH 5qvWajpDVR9OjFfs+gQxVjJssuS2R4Ih9CgvFcrKnjBVWNNbzkbLq3phyKVHpCIptAho MdY1MqQtTjDlltehLc2McVg9Q2m3+amfJNaUngfXpsnlHA0AKez3tkhqKAgwghDXvHmy scCQMbYHd07OnctV68Ddaj7np1wK1pj7EizgRFqYpe+RHotAeFT2hwbZjOZ+uNymfqvz oDhw== X-Received: by 10.112.98.198 with SMTP id ek6mr6845093lbb.22.1407273727331; Tue, 05 Aug 2014 14:22:07 -0700 (PDT) Original-Received: from [10.8.0.26] (v-2-eu19-d3962-07.webazilla.com. [78.140.151.7]) by mx.google.com with ESMTPSA id c9sm1473579laa.32.2014.08.05.14.22.05 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Aug 2014 14:22:06 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0 In-Reply-To: <8338dbqcai.fsf@gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:92160 Archived-At: On 08/05/2014 05:46 PM, Eli Zaretskii wrote: > I fixed window-screen-lines. Thanks! > For example, AFAIU, your code currently assumes that the font used for > popup is the same as the one used for the underlying buffer text. But > since you provide faces for the popup, a user could legitimately > customize those faces to use a different font, and thus invalidate > your calculations, because window-screen-lines uses the metrics of the > default face's font. Sure. This doesn't add any constraints over what we've been living with for years. > IMO, instead of overloading existing display features with jobs they > were never designed to do, and then live forever with the situation > where development breaks the resulting applications (like the > pixel-wise resizing of windows did with this one) pixel-wise resizing wasn't actually the culprit: I've just never tested the code with non-zero line-spacing. Even with it, the bug wasn't too easy to notice. > it would be a much > better investment of energy to come up with requirements for Lisp APIs > that could be used by applications for laying out text. That sounds great, but I don't even know where to start. What we're trying to emulate, though, is multi-layered display. That sounds somewhat different from a "text layout API" to me.