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: Mon, 20 Nov 2017 21:32:13 +0200 Message-ID: <83shd8d9vm.fsf@gnu.org> References: <8facd635-be88-4990-8e7d-538db19c3e1a@default> <04af8576-c419-4d35-9c6e-7170828ac949@default> <83h8tpdkd4.fsf@gnu.org> <837eukesxg.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1511206391 9627 195.159.176.226 (20 Nov 2017 19:33:11 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 20 Nov 2017 19:33:11 +0000 (UTC) Cc: 17893@debbugs.gnu.org, charles@aurox.ch To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Nov 20 20:33:07 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 1eGroY-0002Ez-EQ for geb-bug-gnu-emacs@m.gmane.org; Mon, 20 Nov 2017 20:33:06 +0100 Original-Received: from localhost ([::1]:59380 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eGrof-0005b3-LO for geb-bug-gnu-emacs@m.gmane.org; Mon, 20 Nov 2017 14:33:13 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52430) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eGroZ-0005ay-NZ for bug-gnu-emacs@gnu.org; Mon, 20 Nov 2017 14:33:09 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eGroU-0008Rq-0y for bug-gnu-emacs@gnu.org; Mon, 20 Nov 2017 14:33:07 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:40758) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eGroT-0008Rm-TR for bug-gnu-emacs@gnu.org; Mon, 20 Nov 2017 14:33:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1eGroT-0000xr-NE for bug-gnu-emacs@gnu.org; Mon, 20 Nov 2017 14:33:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 20 Nov 2017 19:33:01 +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=B17893.15112063803700 (code B ref 17893); Mon, 20 Nov 2017 19:33:01 +0000 Original-Received: (at 17893) by debbugs.gnu.org; 20 Nov 2017 19:33:00 +0000 Original-Received: from localhost ([127.0.0.1]:49439 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eGroR-0000xb-Rx for submit@debbugs.gnu.org; Mon, 20 Nov 2017 14:33:00 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:33161) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eGroQ-0000xP-Ka for 17893@debbugs.gnu.org; Mon, 20 Nov 2017 14:32:58 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eGroH-0008II-Um for 17893@debbugs.gnu.org; Mon, 20 Nov 2017 14:32:53 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:47616) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eGroH-0008IA-Sb; Mon, 20 Nov 2017 14:32:49 -0500 Original-Received: from [176.228.60.248] (port=3076 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1eGroD-0005En-FU; Mon, 20 Nov 2017 14:32:49 -0500 In-reply-to: (message from Stefan Monnier on Mon, 20 Nov 2017 13:59:12 -0500) 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:140161 Archived-At: > From: Stefan Monnier > Cc: charles@aurox.ch, 17893@debbugs.gnu.org > Date: Mon, 20 Nov 2017 13:59:12 -0500 > > > M-n > > M-: Info-tag-table-marker RET > > => # > > Maybe there's a bug, indeed. Does the above lead to undesired behavior? I didn't dig deep enough to find out. But it's clear that such a marker is useless at best. > No. It just assumes that whichever package owns a marker that needs > special treatment should register itself on that hook. Maybe that's too > much to ask, but it's definitely not "impossible". Registering a hook is easy, the problem is doing everything that's needed in the hook. Especially given that clone-buffer is not documented, and therefore all these caveats are nowhere to be learned. > > As another data point, there are 6 users of clone-buffer in Emacs > > core, and only one of them bothers to set up a clone-buffer-hook. > > Do these suffer from problems? I don't know. But markers are quite common, so I'd be surprised if they didn't.