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#64596: 30.0.50; On FIXME: in src/buffer.c:1481 (force-mode-line-update) Date: Sun, 16 Jul 2023 10:15:28 +0300 Message-ID: <83v8ek9vjj.fsf@gnu.org> References: <877cr4nez9.fsf@localhost> <83lefj4okb.fsf@gnu.org> <83fs5r3tqv.fsf@gnu.org> <834jm6fppc.fsf@gnu.org> <87a5vyidy6.fsf@localhost> <83sf9qe2ip.fsf@gnu.org> <83a5vxejz6.fsf@gnu.org> <83r0p9b3om.fsf@gnu.org> <83jzv1b152.fsf@gnu.org> <83a5vxas9k.fsf@gnu.org> <877cr1nep6.fsf@localhost> <835y6kbgik.fsf@gnu.org> <874jm4o16u.fsf@localhost> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31922"; mail-complaints-to="usenet@ciao.gmane.io" Cc: monnier@iro.umontreal.ca, 64596@debbugs.gnu.org To: Ihor Radchenko Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Jul 16 09:16:17 2023 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 1qKvzN-00089c-0J for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qKvyD-0005PR-Fc; Sun, 16 Jul 2023 03:15:05 -0400 In-Reply-To: <874jm4o16u.fsf@localhost> (message from Ihor Radchenko on Sun, 16 Jul 2023 05:49:45 +0000) 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:265280 Archived-At: > From: Ihor Radchenko > Cc: monnier@iro.umontreal.ca, 64596@debbugs.gnu.org > Date: Sun, 16 Jul 2023 05:49:45 +0000 > > Eli Zaretskii writes: > > >> At least, when the current buffer is only displayed in a single, > >> selected window, checking every window should not be necessary. > > > > The code which sets update_mode_lines doesn't know whether the current > > buffer will be displayed in a single window by the time redisplay > > kicks in. It doesn't even know whether it will still be the current > > buffer by that time. Because the Lisp program that is running and > > making the changes which cause update_mode_lines to be set can change > > these things before it finishes. > > If the selected window changes for any reason, redisplaying the > previously selected window will be queued by select_window: Yes, but what does this have to do with what I wrote? My point is that where we set update_mode_lines we cannot yet know whether only the selected window will have to be redisplayed.