From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#35273: "Marker does not point anywhere" when reading next article Date: Sat, 27 Apr 2019 19:49:48 +0300 Message-ID: <83ef5nv1eb.fsf@gnu.org> References: <875zrgpusw.fsf@vuxu.org> <87lg0czgy1.fsf@tcd.ie> <8736mkgu83.fsf@vuxu.org> <87zhoqxgzn.fsf@gmail.com> <87wojum7vc.fsf@vuxu.org> <87wojuxfdl.fsf@gmail.com> <87sguim6gn.fsf@vuxu.org> <87tveyxdd7.fsf@gmail.com> <83h8aygfil.fsf@gnu.org> <87zhokubjp.fsf@gmail.com> <83d0lgbxln.fsf@gnu.org> <83zhokabrx.fsf@gnu.org> <871s1nqv6y.fsf@gmail.com> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="90046"; mail-complaints-to="usenet@blaine.gmane.org" Cc: contovob@tcd.ie, 35273@debbugs.gnu.org, leah@vuxu.org To: Noam Postavsky Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Apr 27 18:58:36 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hKQep-000NKk-Cn for geb-bug-gnu-emacs@m.gmane.org; Sat, 27 Apr 2019 18:58:35 +0200 Original-Received: from localhost ([127.0.0.1]:34257 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hKQeo-0008Sw-8j for geb-bug-gnu-emacs@m.gmane.org; Sat, 27 Apr 2019 12:58:34 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:37261) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hKQeW-0008IV-SS for bug-gnu-emacs@gnu.org; Sat, 27 Apr 2019 12:58:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hKQXW-0003Rr-7h for bug-gnu-emacs@gnu.org; Sat, 27 Apr 2019 12:51:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:50585) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hKQXW-0003Ri-4q for bug-gnu-emacs@gnu.org; Sat, 27 Apr 2019 12:51:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hKQXV-00089N-UO; Sat, 27 Apr 2019 12:51:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org, bugs@gnus.org Resent-Date: Sat, 27 Apr 2019 16:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 35273 X-GNU-PR-Package: emacs,gnus Original-Received: via spool by 35273-submit@debbugs.gnu.org id=B35273.155638381131254 (code B ref 35273); Sat, 27 Apr 2019 16:51:01 +0000 Original-Received: (at 35273) by debbugs.gnu.org; 27 Apr 2019 16:50:11 +0000 Original-Received: from localhost ([127.0.0.1]:35896 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hKQWh-000881-6q for submit@debbugs.gnu.org; Sat, 27 Apr 2019 12:50:11 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:50211) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hKQWf-00087h-JP for 35273@debbugs.gnu.org; Sat, 27 Apr 2019 12:50:10 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:48759) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hKQWZ-0002mG-JF; Sat, 27 Apr 2019 12:50:03 -0400 Original-Received: from [176.228.60.248] (port=4654 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1hKQWY-0006yc-R8; Sat, 27 Apr 2019 12:50:03 -0400 In-reply-to: <871s1nqv6y.fsf@gmail.com> (message from Noam Postavsky on Sat, 27 Apr 2019 12:17:25 -0400) 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: 209.51.188.43 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:158363 Archived-At: > From: Noam Postavsky > Cc: contovob@tcd.ie, 35273@debbugs.gnu.org, leah@vuxu.org > Date: Sat, 27 Apr 2019 12:17:25 -0400 > > >> > > I think it would be better to try to understand how we got such an > >> > > overlay. Was it deleted, per chance? > >> > > >> > I entirely agree with this, but how to check for that? > >> > >> But a breakpoint in delete-overlay? > > I managed to reproduce (wasn't too hard actually). All the overlay > deletion seems to come from gnus. I got hits from erase-buffer (called > by gnus), gnus-kill-all-overlays, and gnus-cite-delete-overlays. OK, thanks. Then I think it would be better to test the overlay for being dead in xdisp.c, before we call mouse_face_overlay_overlaps. Also, a faster test would be to check that the marker's buffer is a NULL pointer, doing that doesn't require a call marker-position. WDYT?