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#13522: 24.2; save-buffer removes edited file under some conditions Date: Mon, 14 Mar 2022 16:05:43 +0200 Message-ID: <83fsnkk4so.fsf@gnu.org> References: <87622qaszq.fsf@xvii.vinc17.org> <8735jkye2q.fsf@gnus.org> <83mthsk63c.fsf@gnu.org> <87sfrkwsy5.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="20400"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 13522@debbugs.gnu.org, vincent@vinc17.net To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Mar 14 15:55:48 2022 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 1nTm6u-0005A2-1M for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 14 Mar 2022 15:55:48 +0100 Original-Received: from localhost ([::1]:55120 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nTm6s-0001gy-AT for geb-bug-gnu-emacs@m.gmane-mx.org; Mon, 14 Mar 2022 10:55:46 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:50658) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nTlLj-0001EL-Ey for bug-gnu-emacs@gnu.org; Mon, 14 Mar 2022 10:07:05 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:52005) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nTlLi-0007GI-5M for bug-gnu-emacs@gnu.org; Mon, 14 Mar 2022 10:07:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nTlLh-0004W5-No for bug-gnu-emacs@gnu.org; Mon, 14 Mar 2022 10:07:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 14 Mar 2022 14:07:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 13522 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed Original-Received: via spool by 13522-submit@debbugs.gnu.org id=B13522.164726676317288 (code B ref 13522); Mon, 14 Mar 2022 14:07:01 +0000 Original-Received: (at 13522) by debbugs.gnu.org; 14 Mar 2022 14:06:03 +0000 Original-Received: from localhost ([127.0.0.1]:45902 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nTlKk-0004Um-Jg for submit@debbugs.gnu.org; Mon, 14 Mar 2022 10:06:02 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:44602) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nTlKj-0004UG-8B for 13522@debbugs.gnu.org; Mon, 14 Mar 2022 10:06:01 -0400 Original-Received: from [2001:470:142:3::e] (port=48922 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 1nTlKd-00072I-Nm; Mon, 14 Mar 2022 10:05:55 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=11jHEJ8hpFdZy3mq1/AMclhznm9UwV93d3M6BioZ+aY=; b=h3YoGOHJMbz8 r6uHHY9auihBlsCEaZAkcVg5uxUd3S0gvmtOJ1ocUjhUBIb1XvjMuT5WhKF1WYmzLZGJt0lyHFlxG QYN5bdpxaus2d3hiNDHlANKT65G6Ljl2THuCfT+SHKHu6pHg+QnblkcQsMbUL2e4cc0IjLLRR+UuL nX4QSlFZlzEuSfjMtx/ZYuyeaO9EVKIV/y+2JtQelJv16DXsjnMv80sdUzYoo7tQopYDUjNVaC4SC MOFx+wlXcjYas186K8fJ6NUIyePet3gaB4V5XMaFcfJcUUvFrim1FTGy0v4vqL5VTcUZ2NkSaWpaY 75xHcqCt57A9WgoLu0ZJdA==; Original-Received: from [87.69.77.57] (port=4841 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 1nTlKd-0003Uk-5w; Mon, 14 Mar 2022 10:05:55 -0400 In-Reply-To: <87sfrkwsy5.fsf@gnus.org> (message from Lars Ingebrigtsen on Mon, 14 Mar 2022 14:43:14 +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:228372 Archived-At: > From: Lars Ingebrigtsen > Cc: vincent@vinc17.net, 13522@debbugs.gnu.org > Date: Mon, 14 Mar 2022 14:43:14 +0100 > > Eli Zaretskii writes: > > > Is it "C-c to kill Emacs" as in "terminate Emacs with a fatal signal", > > or is it "C-x C-c" as in "exit Emacs in an orderly fashion"? > > > > If the former, then in general killing a program when it is in the > > middle of writing files isn't guaranteed to preserve those files. > > It's the former (sort of). > > And, yes, we make no guarantees, but the present situation doesn't seem > optimal. The user may well hit `C-z' at the prompt and wonder where the > file disappeared to. That's in the "if it hurts, don't do that" department, IMO. SIGINT is a fatal signal, and our response to fatal signals cannot be too fancy. We just auto-save what we can and commit suicide. Even that is disliked by some, who say we cannot safely do anything non-trivial from a fatal signal handler -- and they are absolutely right, we do stuff that invokes undefined behavior.