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#19553: 25.0.50; vertical-motion returns erroneous positive value Date: Sat, 10 Jan 2015 15:06:00 +0200 Message-ID: <834mry7pl3.fsf@gnu.org> References: <86r3v3qhpj.fsf@yandex.ru> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1420895238 5180 80.91.229.3 (10 Jan 2015 13:07:18 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 10 Jan 2015 13:07:18 +0000 (UTC) Cc: 19553@debbugs.gnu.org To: Dmitry Gutov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Jan 10 14:07:12 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 1Y9vl2-00049e-8z for geb-bug-gnu-emacs@m.gmane.org; Sat, 10 Jan 2015 14:07:12 +0100 Original-Received: from localhost ([::1]:55046 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9vl1-00039K-Iu for geb-bug-gnu-emacs@m.gmane.org; Sat, 10 Jan 2015 08:07:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35965) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9vkw-00039D-3Q for bug-gnu-emacs@gnu.org; Sat, 10 Jan 2015 08:07:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y9vks-0007QL-6k for bug-gnu-emacs@gnu.org; Sat, 10 Jan 2015 08:07:06 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:60445) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9vks-0007QC-4O for bug-gnu-emacs@gnu.org; Sat, 10 Jan 2015 08:07:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Y9vkr-0001km-Nn for bug-gnu-emacs@gnu.org; Sat, 10 Jan 2015 08:07:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 10 Jan 2015 13:07:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19553 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 19553-submit@debbugs.gnu.org id=B19553.14208951656664 (code B ref 19553); Sat, 10 Jan 2015 13:07:01 +0000 Original-Received: (at 19553) by debbugs.gnu.org; 10 Jan 2015 13:06:05 +0000 Original-Received: from localhost ([127.0.0.1]:41578 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Y9vjx-0001jQ-93 for submit@debbugs.gnu.org; Sat, 10 Jan 2015 08:06:05 -0500 Original-Received: from mtaout24.012.net.il ([80.179.55.180]:52097) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Y9vju-0001iz-3Y for 19553@debbugs.gnu.org; Sat, 10 Jan 2015 08:06:03 -0500 Original-Received: from conversion-daemon.mtaout24.012.net.il by mtaout24.012.net.il (HyperSendmail v2007.08) id <0NHY00K00P2JT200@mtaout24.012.net.il> for 19553@debbugs.gnu.org; Sat, 10 Jan 2015 14:57:59 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout24.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NHY00ACBPCN9990@mtaout24.012.net.il>; Sat, 10 Jan 2015 14:57:59 +0200 (IST) In-reply-to: <86r3v3qhpj.fsf@yandex.ru> 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: 140.186.70.43 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:98169 Archived-At: > From: Dmitry Gutov > Date: Sat, 10 Jan 2015 09:21:12 +0300 > > 1. Create an empty buffer. > > 2. Create an overlay at the end of it with a tricky after-string: > > (setq my-ov (make-overlay (point-max) (point-max) nil t t)) > (overlay-put my-ov 'after-string "~\n~\n~") > > 3. Move point to the end of the buffer (it will be rendered after the > display string; not sure if it's a bug). > > 4. Evaluate (vertical-motion 1). Point won't move (it has nowhere to > go), but the function call with return 2. Repeat indefinitely. > > It's apparently an old bug, but it's been reported in > https://github.com/company-mode/company-mode/issues/274 two days ago, > because it causes an error in company-mode's popup rendering code when > used together with a new-ish package. Fixed in commit b544ab5 on the emacs-24 branch. Thanks.