From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: storm@cua.dk (Kim F. Storm) Newsgroups: gmane.emacs.devel Subject: Re: Redisplay bug Date: 19 Aug 2002 01:40:21 +0200 Sender: emacs-devel-admin@gnu.org Message-ID: <5xit27g2hm.fsf@kfs2.cua.dk> References: <200208182145.QAA02935@eel.dms.auburn.edu> NNTP-Posting-Host: localhost.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1029710488 7009 127.0.0.1 (18 Aug 2002 22:41:28 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Sun, 18 Aug 2002 22:41:28 +0000 (UTC) Cc: Andreas Schwab , Luc Teirlinck , deego@glue.umd.edu, emacs-devel@gnu.org Return-path: Original-Received: from quimby.gnus.org ([80.91.224.244]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 17gYje-0001or-00 for ; Mon, 19 Aug 2002 00:41:26 +0200 Original-Received: from monty-python.gnu.org ([199.232.76.173]) by quimby.gnus.org with esmtp (Exim 3.12 #1 (Debian)) id 17gZAn-0000Rq-00 for ; Mon, 19 Aug 2002 01:09:29 +0200 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10) id 17gYkg-0002TA-00; Sun, 18 Aug 2002 18:42:30 -0400 Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.10) id 17gYiL-0002Kr-00 for emacs-devel@gnu.org; Sun, 18 Aug 2002 18:40:05 -0400 Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.10) id 17gYiG-0002K3-00 for emacs-devel@gnu.org; Sun, 18 Aug 2002 18:40:05 -0400 Original-Received: from mail.filanet.dk ([195.215.206.179]) by monty-python.gnu.org with esmtp (Exim 4.10) id 17gYiG-0002JN-00; Sun, 18 Aug 2002 18:40:00 -0400 Original-Received: from kfs2.cua.dk.cua.dk (unknown [10.1.82.3]) by mail.filanet.dk (Postfix) with SMTP id 84CF17C017; Sun, 18 Aug 2002 22:39:52 +0000 (GMT) Original-To: rms@gnu.org In-Reply-To: Original-Lines: 34 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 Errors-To: emacs-devel-admin@gnu.org X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.0.11 Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: Emacs development discussions. List-Unsubscribe: , List-Archive: Xref: main.gmane.org gmane.emacs.devel:6633 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:6633 Andreas Schwab writes: > Luc Teirlinck writes: > > |> Andreas Schwab wrote: > |> > |> Does anyone else see this redisplay bug? I do M-x info, visit the Emacs > |> manual, scroll down 2 pages. When I now scroll back 2 pages the display > |> is completely messed up. > |> > |> This seems related to the header line. > > I don't think so. Another way to trigger the bug: enable > global-font-lock-mode, load some C file, resize Emacs so that the last > line is only partially visible, ie. the frame size is not a multiple of > the font size. Now type M-> to go to point-max and scroll up one line at > a time (M-1 M-v). As soon as the cursor hits the last frame line the > display is garbled. This happens only when point is at point-max. > This has been reported several times now. It is related to changes Richard made to xdisp.c some time ago. The change was intended to fix a problem with scrolling leaving a partially visible line at the bottom (or top) of the window -- but the change doesn't work correctly when that line is the last (first) line of the buffer. Is someone working on fixing this, or should I give it a try? -- Kim F. Storm http://www.cua.dk