From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#38181: Actual height of mode-line not taken into account Date: Fri, 15 Nov 2019 15:48:53 +0200 Message-ID: <83d0dt2qt6.fsf@gnu.org> References: <87eeyd3ul0.fsf@bernoul.li> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="207685"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 38181@debbugs.gnu.org To: Jonas Bernoulli Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Nov 15 14:50:11 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iVbzG-000rrQ-IL for geb-bug-gnu-emacs@m.gmane.org; Fri, 15 Nov 2019 14:50:10 +0100 Original-Received: from localhost ([::1]:39368 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVbzF-0004UN-0q for geb-bug-gnu-emacs@m.gmane.org; Fri, 15 Nov 2019 08:50:09 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55263) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVbz9-0004UB-91 for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 08:50:04 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iVbz8-0000nH-9G for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 08:50:03 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:55246) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iVbz8-0000n9-6M for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 08:50:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iVbz8-0005M4-1W for bug-gnu-emacs@gnu.org; Fri, 15 Nov 2019 08:50:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 15 Nov 2019 13:50:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 38181 X-GNU-PR-Package: emacs Original-Received: via spool by 38181-submit@debbugs.gnu.org id=B38181.157382576020524 (code B ref 38181); Fri, 15 Nov 2019 13:50:01 +0000 Original-Received: (at 38181) by debbugs.gnu.org; 15 Nov 2019 13:49:20 +0000 Original-Received: from localhost ([127.0.0.1]:35834 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iVbyR-0005Ky-Qy for submit@debbugs.gnu.org; Fri, 15 Nov 2019 08:49:20 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:46085) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iVbyO-0005Kl-Ve for 38181@debbugs.gnu.org; Fri, 15 Nov 2019 08:49:17 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:57010) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iVbyJ-0000CL-6N; Fri, 15 Nov 2019 08:49:11 -0500 Original-Received: from [176.228.60.248] (port=4307 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iVbyG-0002eX-QZ; Fri, 15 Nov 2019 08:49:10 -0500 In-reply-to: <87eeyd3ul0.fsf@bernoul.li> (message from Jonas Bernoulli on Tue, 12 Nov 2019 17:52:59 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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" Xref: news.gmane.org gmane.emacs.bugs:171667 Archived-At: > From: Jonas Bernoulli > Date: Tue, 12 Nov 2019 17:52:59 +0100 > > If the height of the mode-line is increased by inserting an image into > it, then that height is not taken into account in a buffer/window until > `redisplay' has been called at least once since the buffer was created. AFAIR, the mode line display is done lazily, because otherwise the mode line would flicker. When you change the face, that triggers a thorough redisplay, because any change in faces does that (it could mean many faces now have a different appearance). Adding an image to the mode line doesn't have that effect, which is why you need to force redisplay manually. So much for theory. Now for the practical aspects: how bad is it to have to invoke redisplay by hand in these cases? After all, they don't sound like something a Lisp program would do frequently.