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#50256: thing-at-mouse Date: Thu, 02 Sep 2021 09:16:03 +0300 Organization: LINKOV.NET Message-ID: <87ilzjijto.fsf@mail.linkov.net> References: <87sfys6ubm.fsf@mail.linkov.net> <87eeacdnmg.fsf@gnus.org> <87h7f7z8ui.fsf@mail.linkov.net> <871r6a8ooe.fsf@gnus.org> <87y28i85xi.fsf@mail.linkov.net> <87k0k1o5ks.fsf@mail.linkov.net> <87ilzk6bsr.fsf@mail.linkov.net> <6dcf3191-dbb3-0c6c-2483-0fc05e9ff6e5@gmx.at> <83lf4gqyn9.fsf@gnu.org> <1a65f234-c1ee-ae95-aa05-2e3d9d1e1002@gmx.at> <8335qoqobm.fsf@gnu.org> <7c9cb0a1-b222-cb06-7e7c-7f17231faca3@gmx.at> <83pmtsp4g1.fsf@gnu.org> <875yvknpls.fsf@mail.linkov.net> <83k0k0p0am.fsf@gnu.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="37707"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) Cc: larsi@gnus.org, 50256@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Sep 02 08:18:13 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 1mLg3B-0009gG-5Y for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 02 Sep 2021 08:18:13 +0200 Original-Received: from localhost ([::1]:58680 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mLg39-0006sv-GV for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 02 Sep 2021 02:18:11 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44896) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mLg30-0006sj-N3 for bug-gnu-emacs@gnu.org; Thu, 02 Sep 2021 02:18:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:56124) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mLg30-00054d-Fy for bug-gnu-emacs@gnu.org; Thu, 02 Sep 2021 02:18:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mLg30-0007p3-B3 for bug-gnu-emacs@gnu.org; Thu, 02 Sep 2021 02:18:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Juri Linkov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 02 Sep 2021 06:18:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 50256 X-GNU-PR-Package: emacs Original-Received: via spool by 50256-submit@debbugs.gnu.org id=B50256.163056345030023 (code B ref 50256); Thu, 02 Sep 2021 06:18:02 +0000 Original-Received: (at 50256) by debbugs.gnu.org; 2 Sep 2021 06:17:30 +0000 Original-Received: from localhost ([127.0.0.1]:39437 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mLg2U-0007oB-DR for submit@debbugs.gnu.org; Thu, 02 Sep 2021 02:17:30 -0400 Original-Received: from relay9-d.mail.gandi.net ([217.70.183.199]:53781) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mLg2S-0007nv-V7 for 50256@debbugs.gnu.org; Thu, 02 Sep 2021 02:17:29 -0400 Original-Received: (Authenticated sender: juri@linkov.net) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 1E9E6FF80B; Thu, 2 Sep 2021 06:17:20 +0000 (UTC) In-Reply-To: <83k0k0p0am.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 01 Sep 2021 22:23:45 +0300") 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:213226 Archived-At: >> In bug#9923 'C-h m' switched to another buffer before calling >> mouse-set-point. > > Then it's a bug in that command, I'd say. You assume something about > last-input and what mouse-set-point and posn-set-point will do when > last-input is not a click event. And that assumption turns out to be > false. So instead of making that assumption, why not give the code a > valid event to work with instead? Currently event-start and event-end that use mouse-set-point and posn-set-point create an invalid event when some code inadvertently switches the buffer. > posn-at-point cannot work correctly when current buffer and the > selected window's buffer are not the same, because they use display > code which is based on that contract. If you break the contract by > the likes of with-current-buffer, you will be lucky not to crash, let > alone cause errors. So the conclusion is following? There is a bug in the low-level function, but we ask users to be careful and to take precautions against stumbling on this bug. Then the problem is that such warning should be documented somewhere.