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#12872: 24.2; Provide a feature to trigger mode-line redisplay Date: Sun, 05 Dec 2021 09:02:43 +0200 Message-ID: <83zgpf4jqk.fsf@gnu.org> References: <837gpqwuai.fsf@gnu.org> <87o85xou2m.fsf@gnus.org> <83a6hg7qkh.fsf@gnu.org> <87mtlg6vzm.fsf@gnus.org> <83ee6s5fy4.fsf@gnu.org> <877dck5fbb.fsf@gnus.org> <83a6hg5f71.fsf@gnu.org> <87tufoxc10.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="38600"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 12872@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Dec 05 08:03:21 2021 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 1mtlYP-0009qp-GC for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 05 Dec 2021 08:03:21 +0100 Original-Received: from localhost ([::1]:40786 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mtlYO-0001wZ-Fv for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 05 Dec 2021 02:03:20 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:48698) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtlY6-0001w3-17 for bug-gnu-emacs@gnu.org; Sun, 05 Dec 2021 02:03:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:44620) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mtlY5-00008O-PX for bug-gnu-emacs@gnu.org; Sun, 05 Dec 2021 02:03:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mtlY5-0007is-Mw for bug-gnu-emacs@gnu.org; Sun, 05 Dec 2021 02:03:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 05 Dec 2021 07:03:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 12872 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 12872-submit@debbugs.gnu.org id=B12872.163868777529675 (code B ref 12872); Sun, 05 Dec 2021 07:03:01 +0000 Original-Received: (at 12872) by debbugs.gnu.org; 5 Dec 2021 07:02:55 +0000 Original-Received: from localhost ([127.0.0.1]:56166 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mtlXz-0007iY-IG for submit@debbugs.gnu.org; Sun, 05 Dec 2021 02:02:55 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:47926) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mtlXy-0007iK-9h for 12872@debbugs.gnu.org; Sun, 05 Dec 2021 02:02:54 -0500 Original-Received: from [2001:470:142:3::e] (port=60530 helo=fencepost.gnu.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtlXt-00007S-2A; Sun, 05 Dec 2021 02:02:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=Crk4ukb9pN9V7YZUwZM5sTH3gKxhfPJX0jxb2QyHfKg=; b=Zgun0iwueoukkY7tEvzJ bfxdjyza3gZfff84IfAtYA9veBmsJsTACA110GNZrlAyZZcVDRR9BV70FjnEACSoEHXb3yy1936Z3 sRF54ddiWH0UEnI7lVJ8CRMai6WEj04BBk5/WadPbfSkWOCsoz8wTV/fZHDoiFvz9HHVFlGpTTnNs Hob/r/z+lUZDQeSS12ZXCOWl8uEiJrNnE+JGwjeE9l8mFe33z2BCgifzs8f4nlv9rmUqoT81juZ53 J6/kT+Ov28y0pmTd/55SpbFbyV94tNOUMh28pgmnqt2Z5xEP48ti03s6SaK+yUs4wsyuwL7RVM1vi 4hpUP5yAlCzoUQ==; Original-Received: from [87.69.77.57] (port=2239 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 1mtlXs-0006Cm-O0; Sun, 05 Dec 2021 02:02:49 -0500 In-Reply-To: <87tufoxc10.fsf@gnus.org> (message from Lars Ingebrigtsen on Sat, 04 Dec 2021 23:04:11 +0100) 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:221585 Archived-At: > From: Lars Ingebrigtsen > Cc: 12872@debbugs.gnu.org > Date: Sat, 04 Dec 2021 23:04:11 +0100 > > Eli Zaretskii writes: > > >> What flag is that? > > > > w->update_mode_line > > Oh, I didn't realise that the update_mode_line variable and that field > were separate things... update_mode_line is global, affecting all windows. > >> > The problem is how to set it only when the current line changes. I > >> > think that's the crux of this issue. > >> > >> I must admit I didn't understand what was meant by "when the current > >> line changes". 😐 > > > > It means point moves from one physical line to another. > > Then it doesn't sound difficult to implement that in an efficient > manner? Whatever function Drew is using could just put itself in > post-command-hook and check? Isn't there a line number cache somewhere? It can be solved that way, yes. But the bug is about allowing to solve it in a less expensive way. post-command-hook makes Emacs sluggish, and line-number cache cannot be trusted in Lisp programs (and is not exposed to Lisp, I think?). But if we don't want to add such a feature, we can close the bug as wontfix.