From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Juri Linkov Newsgroups: gmane.emacs.bugs Subject: bug#40774: Error messages shouldn't be hidden when the user is idle Date: Sun, 05 Dec 2021 20:54:20 +0200 Organization: LINKOV.NET Message-ID: <86pmqa51cz.fsf@mail.linkov.net> References: <83blnje5ro.fsf@gnu.org> <838sine4si.fsf@gnu.org> <837dy7e3wr.fsf@gnu.org> <-ZmNQQ07JD7L0I5EpXolv4t1UhWBGc4SN0dkJml3cLbBjO6ucAMUzAqsI9Ca69xO_hzlMLfaLs6bY9vq8GAR24RUGu1LZqVoVkXhiJcFgtg=@protonmail.com> <835zdre31u.fsf@gnu.org> <87v9lpluez.fsf@mail.linkov.net> <874koxwi1t.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13332"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (x86_64-pc-linux-gnu) Cc: 40774@debbugs.gnu.org, ndame@protonmail.com To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Dec 05 20:12:30 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 1mtww2-0003M4-3r for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 05 Dec 2021 20:12:30 +0100 Original-Received: from localhost ([::1]:38426 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mtww1-0006ZW-3e for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 05 Dec 2021 14:12:29 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:50150) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mtwva-0006Xw-K8 for bug-gnu-emacs@gnu.org; Sun, 05 Dec 2021 14:12:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:47926) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mtwva-0004N7-Ci for bug-gnu-emacs@gnu.org; Sun, 05 Dec 2021 14:12:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mtwva-0002Dk-7x for bug-gnu-emacs@gnu.org; Sun, 05 Dec 2021 14:12:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Juri Linkov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 05 Dec 2021 19:12:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 40774 X-GNU-PR-Package: emacs Original-Received: via spool by 40774-submit@debbugs.gnu.org id=B40774.16387315148500 (code B ref 40774); Sun, 05 Dec 2021 19:12:02 +0000 Original-Received: (at 40774) by debbugs.gnu.org; 5 Dec 2021 19:11:54 +0000 Original-Received: from localhost ([127.0.0.1]:59468 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mtwvS-0002D1-66 for submit@debbugs.gnu.org; Sun, 05 Dec 2021 14:11:54 -0500 Original-Received: from relay7-d.mail.gandi.net ([217.70.183.200]:53593) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mtwvP-0002Ch-Sl for 40774@debbugs.gnu.org; Sun, 05 Dec 2021 14:11:52 -0500 Original-Received: (Authenticated sender: juri@linkov.net) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id 2897120002; Sun, 5 Dec 2021 19:11:43 +0000 (UTC) In-Reply-To: <874koxwi1t.fsf@gnus.org> (Lars Ingebrigtsen's message of "Thu, 20 Aug 2020 15:41:50 +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:221636 Archived-At: >> + if (NILP (preserve)) >> + { >> + echo_area_buffer[0] = Qnil; >> + message_cleared_p = true; >> + } > > It an interesting idea, but I don't think this would be a > backwards-compatible implementation. Today, the return value of > clear-message-function isn't used, so we have to assume that users of > that variable returns... whatever. Giving it semantics now would lead > to the message area being preserved unexpectedly. To be able to use clear-message-function in Emacs 29, we need to issue a notification in Emacs 28 NEWS: diff --git a/etc/NEWS b/etc/NEWS index 8e38c3690c..69d00a8bf1 100644 --- a/etc/NEWS +++ b/etc/NEWS @@ -3327,6 +3327,10 @@ This new 'etc-authors-mode' provides font-locking for displaying the * Incompatible Lisp Changes in Emacs 28.1 +--- +** The return value of 'clear-message-function' will change in later releases. +When it will return a non-nil, the echo area won't be cleared. + +++ ** Emacs now prints a backtrace when signaling an error in batch mode. This makes debugging Emacs Lisp scripts run in batch mode easier. To --