From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#21699: 24.5; Bug in backup-buffer-copy and/or set-file-extended-attributes etc [set-file-extended-attributes] Date: Mon, 19 Oct 2015 09:38:08 +0300 Message-ID: <831tcricrz.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1445236827 21029 80.91.229.3 (19 Oct 2015 06:40:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 19 Oct 2015 06:40:27 +0000 (UTC) Cc: 21699@debbugs.gnu.org To: Eli Barzilay Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Oct 19 08:40:16 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Zo47A-0004jV-HC for geb-bug-gnu-emacs@m.gmane.org; Mon, 19 Oct 2015 08:40:12 +0200 Original-Received: from localhost ([::1]:36774 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zo479-0007YX-AB for geb-bug-gnu-emacs@m.gmane.org; Mon, 19 Oct 2015 02:40:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47693) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zo476-0007WQ-2I for bug-gnu-emacs@gnu.org; Mon, 19 Oct 2015 02:40:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zo471-0008Vu-1f for bug-gnu-emacs@gnu.org; Mon, 19 Oct 2015 02:40:07 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:36695) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zo470-0008Vq-VH for bug-gnu-emacs@gnu.org; Mon, 19 Oct 2015 02:40:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Zo470-0004gr-DG for bug-gnu-emacs@gnu.org; Mon, 19 Oct 2015 02:40:02 -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, 19 Oct 2015 06:40:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 21699 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 21699-submit@debbugs.gnu.org id=B21699.144523674217945 (code B ref 21699); Mon, 19 Oct 2015 06:40:02 +0000 Original-Received: (at 21699) by debbugs.gnu.org; 19 Oct 2015 06:39:02 +0000 Original-Received: from localhost ([127.0.0.1]:55634 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Zo461-0004f5-9a for submit@debbugs.gnu.org; Mon, 19 Oct 2015 02:39:01 -0400 Original-Received: from mtaout28.012.net.il ([80.179.55.184]:59546) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Zo45x-0004et-JO for 21699@debbugs.gnu.org; Mon, 19 Oct 2015 02:38:59 -0400 Original-Received: from conversion-daemon.mtaout28.012.net.il by mtaout28.012.net.il (HyperSendmail v2007.08) id <0NWG00D00FOSBZ00@mtaout28.012.net.il> for 21699@debbugs.gnu.org; Mon, 19 Oct 2015 09:37:21 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by mtaout28.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NWG00221FQ822B0@mtaout28.012.net.il>; Mon, 19 Oct 2015 09:37:20 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:107732 Archived-At: > Date: Mon, 19 Oct 2015 02:14:40 -0400 > From: Eli Barzilay > Cc: 21699@debbugs.gnu.org > > > Please do tell if the problem happens in "emacs -Q". We need to start > > from same baseline which we understand. It might be better to also > > show the results in "emacs -Q" when backup-by-copying is non-nil, but > > with local files on a Windows volume. > > Getting from -Q to a point where the bug(s) are visible means recreating > the same backup configuration which will take a while. I'll try to get > that kater, though I don't know how effective that will be. Please do, I think it's important to start from a known behavior that we understand. > >> 2. The `set-file-extended-attributes' function always returns nil, > >> which is a proper bug: > >> - In `backup-buffer-copy' its return value is used as if it > >> indicates whether it succeeded -- that's currently broken > >> because it always returns nil. > > > > That's not a bug: set-file-extended-attributes is not supposed to > > always return nil. > > Yes, I'm saying that it *does* AFAICT always return nil, hence the bug. > > > > When it succeeds, it returns t. It returns nil in your case because > > it fails; the question is why. > > Its body is a single `dotimes' expression, and that always returns nil > -- do you see any way in which it will return anything else? Ah, yes, you are right. I was instead looking at what set-file-acl returns. So after fixing set-file-extended-attributes as you suggest, does the problem still happen for you?