From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#17893: 24.4.50; (error "Marker does not point anywhere") Date: Fri, 24 Nov 2017 22:39:37 +0200 Message-ID: <83shd38l86.fsf@gnu.org> References: <8facd635-be88-4990-8e7d-538db19c3e1a@default> <04af8576-c419-4d35-9c6e-7170828ac949@default> <83h8tpdkd4.fsf@gnu.org> <83o9nwd77g.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1511556078 16343 195.159.176.226 (24 Nov 2017 20:41:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 24 Nov 2017 20:41:18 +0000 (UTC) Cc: 17893@debbugs.gnu.org, monnier@IRO.UMontreal.CA To: charles@aurox.ch (Charles A. Roelli) Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Nov 24 21:41:10 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eIKma-0003fV-QN for geb-bug-gnu-emacs@m.gmane.org; Fri, 24 Nov 2017 21:41:08 +0100 Original-Received: from localhost ([::1]:51041 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eIKmi-0003MZ-1o for geb-bug-gnu-emacs@m.gmane.org; Fri, 24 Nov 2017 15:41:16 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48081) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eIKmc-0003MS-EA for bug-gnu-emacs@gnu.org; Fri, 24 Nov 2017 15:41:11 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eIKmZ-00076f-Ax for bug-gnu-emacs@gnu.org; Fri, 24 Nov 2017 15:41:10 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:47742) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eIKmZ-00076G-7S for bug-gnu-emacs@gnu.org; Fri, 24 Nov 2017 15:41:07 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1eIKmT-00050k-OO for bug-gnu-emacs@gnu.org; Fri, 24 Nov 2017 15:41:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 24 Nov 2017 20:41:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 17893 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 17893-submit@debbugs.gnu.org id=B17893.151155601719197 (code B ref 17893); Fri, 24 Nov 2017 20:41:01 +0000 Original-Received: (at 17893) by debbugs.gnu.org; 24 Nov 2017 20:40:17 +0000 Original-Received: from localhost ([127.0.0.1]:56423 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eIKll-0004zY-5k for submit@debbugs.gnu.org; Fri, 24 Nov 2017 15:40:17 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:56734) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eIKli-0004zK-Hf for 17893@debbugs.gnu.org; Fri, 24 Nov 2017 15:40:15 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eIKla-0006Lq-A5 for 17893@debbugs.gnu.org; Fri, 24 Nov 2017 15:40:09 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:38368) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eIKla-0006Li-5T; Fri, 24 Nov 2017 15:40:06 -0500 Original-Received: from [176.228.60.248] (port=3422 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1eIKlY-00086z-7Y; Fri, 24 Nov 2017 15:40:06 -0500 In-reply-to: (charles@aurox.ch) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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" Xref: news.gmane.org gmane.emacs.bugs:140341 Archived-At: > Date: Fri, 24 Nov 2017 21:18:36 +0100 > From: charles@aurox.ch (Charles A. Roelli) > CC: monnier@IRO.UMontreal.CA, 17893@debbugs.gnu.org > > I suppose the main issue is fixed in master now: That's just one particular case of a more general problem with markers stored or referenced from local variables of the cloned buffer. > To solve the problem more generally, maybe clone-buffer could look for > local variables with a non-nil symbol property (called, say, > `clone-buffer-update-function'), the value of which would be a > function that updates the "cloned" variable properly. This is not different from running a clone-buffer-update-function: it again lets modes take care of the variables thy know about which need special handling at clone time. My problem with that is that I don't believe this is a complete solution.