GNU logs - #37310, boring messages

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#37310: 27.0.50; vc-revert: No such file or directory vc-nil
Resent-From: Andrii Kolomoiets <andreyk.mad@HIDDEN>
Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
Resent-CC: bug-gnu-emacs@HIDDEN
Resent-Date: Thu, 05 Sep 2019 13:52:02 +0000
Resent-Message-ID: <handler.37310.B.156769148824210 <at> debbugs.gnu.org>
Resent-Sender: help-debbugs@HIDDEN
To: 37310 <at> debbugs.gnu.org
From: Andrii Kolomoiets <andreyk.mad@HIDDEN>
Content-Type: text/plain;
	charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\))
Message-Id: <C475AD6B-90F6-4E84-8CC4-392CE53961ED@HIDDEN>
Date: Thu, 5 Sep 2019 16:51:17 +0300
Precedence: list
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>

Steps to reproduce:

1. mkdir gittest && cd gittest
2. git init
3. echo "foo" > bar.txt
4. git add bar.txt
5. git commit -m "bar.txt added"
6. echo "baz" >> bar.txt
7. emacs -Q
8. C-x v d <RET> -- to open vc-dir for gittest directory
9. C-x v u
10. yes <RET> -- to confirm revert

Debugger entered--Lisp error: (file-missing "Cannot open load file" "No =
such file or directory" "vc-nil")
  require(vc-nil)
  vc-find-backend-function(nil make-version-backups-p)
  vc-call-backend(nil make-version-backups-p "/Users/mad/gittest/")
  vc-version-backup-file("/Users/mad/gittest/")
  vc-revert-file("/Users/mad/gittest/")
  vc-revert()
  funcall-interactively(vc-revert)
  call-interactively(vc-revert nil nil)
  command-execute(vc-revert)

Changing 'git' to 'hg' in the steps to reproduce above leads to the same
error.
Same issue in Emacs 26.3.

vc-backend returns nil for repository root dir. Maybe vc-registered
should return t for root repository directory and all subdirs.
Evaluating (vc-find-root "/Users/mad/gittest" ".git") returns
"~/gittest/" but (vc-registered "/Users/mad/gittest") returns nil.

Message sent:

Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-Mailer: MIME-tools 5.505 (Entity 5.505)
Content-Type: text/plain; charset=utf-8
X-Loop: help-debbugs@HIDDEN
From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Andrii Kolomoiets <andreyk.mad@HIDDEN>
Subject: bug#37310: Acknowledgement (27.0.50; vc-revert: No such file or
 directory vc-nil)
Message-ID: <handler.37310.B.156769148824210.ack <at> debbugs.gnu.org>
References: <C475AD6B-90F6-4E84-8CC4-392CE53961ED@HIDDEN>
X-Gnu-PR-Message: ack 37310
X-Gnu-PR-Package: emacs
Reply-To: 37310 <at> debbugs.gnu.org
Date: Thu, 05 Sep 2019 13:52:02 +0000

Thank you for filing a new bug report with debbugs.gnu.org.

This is an automatically generated reply to let you know your message
has been received.

Your message is being forwarded to the package maintainers and other
interested parties for their attention; they will reply in due course.

Your message has been sent to the package maintainer(s):
 bug-gnu-emacs@HIDDEN

If you wish to submit further information on this problem, please
send it to 37310 <at> debbugs.gnu.org.

Please do not send mail to help-debbugs@HIDDEN unless you wish
to report a problem with the Bug-tracking system.

--=20
37310: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D37310
GNU Bug Tracking System
Contact help-debbugs@HIDDEN with problems

Message received at control <at> debbugs.gnu.org:

Received: (at control) by debbugs.gnu.org; 1 Nov 2020 15:17:32 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Sun Nov 01 10:17:32 2020
Received: from localhost ([127.0.0.1]:38149 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1kZF6q-0005gu-6d
	for submit <at> debbugs.gnu.org; Sun, 01 Nov 2020 10:17:32 -0500
Received: from quimby.gnus.org ([95.216.78.240]:35902)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <larsi@HIDDEN>) id 1kZF6b-0005Rm-5k
 for control <at> debbugs.gnu.org; Sun, 01 Nov 2020 10:17:31 -0500
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org;
 s=20200322; h=Subject:From:To:Message-Id:Date:Sender:Reply-To:Cc:
 MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:
 Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc
 :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:
 List-Subscribe:List-Post:List-Owner:List-Archive;
 bh=7LPWv63iDF3OUegPyGoWGog5n3HarQUOCbMTGuyMb2w=; b=Nk8JkkwmA/xchDQfCJtAbOabu/
 U0HR3koNJrc24xM6eB+3lTFR16uh+PLnfT9Tv9HO0233XCpKNm1TZmU3QNnS0DNzHeGVTJN9Hh5vC
 bDAqrdUyCaqxyN8w7YOFBeDgbqbdD9OYSynqtbkoZwoTmhoeohp2uGizGOnUiBGp17ek=;
Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo)
 by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1kZF6S-0001RY-NO
 for control <at> debbugs.gnu.org; Sun, 01 Nov 2020 16:17:10 +0100
Date: Sun, 01 Nov 2020 16:17:07 +0100
Message-Id: <871rhd9kek.fsf@HIDDEN>
To: control <at> debbugs.gnu.org
From: Lars Ingebrigtsen <larsi@HIDDEN>
Subject: control message for bug #43464
X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org",
 has NOT identified this incoming email as spam.  The original
 message has been attached to this so you can view it or label
 similar future email.  If you have any questions, see
 @@CONTACT_ADDRESS@@ for details.
 Content preview:  forcemerge 43464 37310 quit 
 Content analysis details:   (-2.9 points, 5.0 required)
 pts rule name              description
 ---- ---------------------- --------------------------------------------------
 -1.0 ALL_TRUSTED            Passed through trusted hosts only via SMTP
 -1.9 BAYES_00               BODY: Bayes spam probability is 0 to 1%
 [score: 0.0000]
X-Spam-Score: 0.0 (/)
X-Debbugs-Envelope-To: control
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -1.0 (-)

forcemerge 43464 37310
quit

Last modified: Sun, 1 Nov 2020 15:30:02 UTC

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.