From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.bugs Subject: bug#34038: 26.1; set-window-start sometimes fails to set window start Date: Sun, 13 Jan 2019 14:40:28 +0100 Message-ID: <5C3B3FCC.8080006@gmx.at> References: <83sgxzhe04.fsf@gnu.org> <87ef9je67i.fsf@metalevel.at> <20190111212357.GA5201@ACM> <87h8edt3kz.fsf@metalevel.at> <5C3AF974.1030906@gmx.at> <5029BB09-30CA-41BE-819D-E15101DCF38C@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1547386749 5379 195.159.176.226 (13 Jan 2019 13:39:09 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 13 Jan 2019 13:39:09 +0000 (UTC) To: eliz@gnu.org, 34038@debbugs.gnu.org, triska@metalevel.at, acm@muc.de Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Jan 13 14:39:04 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 esmtp (Exim 4.84_2) (envelope-from ) id 1gifyi-0001I2-Nq for geb-bug-gnu-emacs@m.gmane.org; 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Scroll-conservatively overrides that. AFAICT a first redisplay tries to obey a forced 'window-start' at EOB. A subsequent redisplay_preserve_echo_area, however, has forgotten the force_start and recenters the window. Which means that force_start is pretty ephemeral. martin