From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#39901: Emacs needs to update window-width when the user updates the text size Date: Wed, 05 Aug 2020 17:39:30 +0300 Message-ID: <835z9x9mxp.fsf@gnu.org> References: <878skhphb5.8.fsf@jidanni.org> <877e00nqx8.5.fsf_-_@jidanni.org> <871rkl9u38.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8169"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 953033@bugs.debian.org, yamaoka@jpl.org, jidanni@jidanni.org, 39901@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 05 16:40:12 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1k3KaQ-0001y6-WD for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 05 Aug 2020 16:40:11 +0200 Original-Received: from localhost ([::1]:52340 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k3KaP-0001gu-E7 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 05 Aug 2020 10:40:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:52054) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k3KaI-0001gb-C3 for bug-gnu-emacs@gnu.org; Wed, 05 Aug 2020 10:40:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:40376) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k3KaI-00026z-34 for bug-gnu-emacs@gnu.org; Wed, 05 Aug 2020 10:40:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k3KaH-0005nY-W8 for bug-gnu-emacs@gnu.org; Wed, 05 Aug 2020 10:40:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 05 Aug 2020 14:40:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 39901 X-GNU-PR-Package: emacs Original-Received: via spool by 39901-submit@debbugs.gnu.org id=B39901.159663839222269 (code B ref 39901); Wed, 05 Aug 2020 14:40:01 +0000 Original-Received: (at 39901) by debbugs.gnu.org; 5 Aug 2020 14:39:52 +0000 Original-Received: from localhost ([127.0.0.1]:51922 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k3Ka8-0005n7-Dw for submit@debbugs.gnu.org; Wed, 05 Aug 2020 10:39:52 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:41904) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k3Ka5-0005mt-Rd for 39901@debbugs.gnu.org; Wed, 05 Aug 2020 10:39:51 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:57767) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k3KZz-000269-4x; Wed, 05 Aug 2020 10:39:43 -0400 Original-Received: from [176.228.60.248] (port=1052 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1k3KZw-0000Ji-SK; Wed, 05 Aug 2020 10:39:42 -0400 In-Reply-To: <871rkl9u38.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed, 05 Aug 2020 14:04:59 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:184102 Archived-At: > From: Lars Ingebrigtsen > Date: Wed, 05 Aug 2020 14:04:59 +0200 > Cc: 953033@bugs.debian.org, Katsumi Yamaoka , > 39901@debbugs.gnu.org > > 積丹尼 Dan Jacobson writes: > > > Emacs needs to update window-width when the user updates the text size. > > I think that makes sense. > > Anybody got an opinion here? I do: there's no bug here -- window-width is documented to return a value in terms of the frame's canonical character width (i.e. it uses the dimensions of the frame's default font). And that doesn't change when you change the font only for a single buffer. However, window-width can be asked to return the value in pixels, if someone wants that, and then one can compute the width in units of any other, larger or smaller, font. IOW, if some applications produce unexpected or unpleasant effects when the buffer text is resized, those applications need to be sensitive to such resizing. But changing the semantics of a veteran API like suggested here is a non-starter, as it would definitely break gobs of existing code.