From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#44284: 27.1; with some Unicode font, scrolling upward with the mouse wheel actually scrolls downward when the cursor needs repositioning Date: Fri, 30 Oct 2020 23:09:00 +0200 Message-ID: <83y2jn8lqr.fsf@gnu.org> References: <87zh46e296.fsf@cventin.lip.ens-lyon.fr> <83a6w6cmwe.fsf@gnu.org> <20201030105228.GB27593@zira.vinc17.org> <838sboar11.fsf@gnu.org> <20201030133336.GC27593@zira.vinc17.org> <83pn4zal89.fsf@gnu.org> <20201030163125.GD27593@zira.vinc17.org> <20201030203453.GF27593@zira.vinc17.org> <20201030205702.GG27593@zira.vinc17.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27244"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 44284@debbugs.gnu.org To: Vincent Lefevre Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Oct 30 22:10:25 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kYbfE-00071D-Oy for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 30 Oct 2020 22:10:24 +0100 Original-Received: from localhost ([::1]:58186 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kYbfD-0008Hf-Lu for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 30 Oct 2020 17:10:23 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:32946) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kYbes-0008HV-Ew for bug-gnu-emacs@gnu.org; Fri, 30 Oct 2020 17:10:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48385) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kYbes-00055U-5h for bug-gnu-emacs@gnu.org; Fri, 30 Oct 2020 17:10:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kYber-0001X2-Uu for bug-gnu-emacs@gnu.org; Fri, 30 Oct 2020 17:10:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 30 Oct 2020 21:10:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 44284 X-GNU-PR-Package: emacs Original-Received: via spool by 44284-submit@debbugs.gnu.org id=B44284.16040921685834 (code B ref 44284); Fri, 30 Oct 2020 21:10:01 +0000 Original-Received: (at 44284) by debbugs.gnu.org; 30 Oct 2020 21:09:28 +0000 Original-Received: from localhost ([127.0.0.1]:59931 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kYbeK-0001W2-Hf for submit@debbugs.gnu.org; Fri, 30 Oct 2020 17:09:28 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:32800) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kYbeF-0001Vn-MZ for 44284@debbugs.gnu.org; Fri, 30 Oct 2020 17:09:27 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:54607) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kYbeA-00053G-91; Fri, 30 Oct 2020 17:09:18 -0400 Original-Received: from [176.228.60.248] (port=2182 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kYbe9-0007Pi-Ko; Fri, 30 Oct 2020 17:09:18 -0400 In-Reply-To: <20201030205702.GG27593@zira.vinc17.org> (message from Vincent Lefevre on Fri, 30 Oct 2020 21:57:02 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:192203 Archived-At: > Date: Fri, 30 Oct 2020 21:57:02 +0100 > From: Vincent Lefevre > Cc: 44284@debbugs.gnu.org > > This is contextual. For instance, with > > emacs -Q -fn -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1 file > > I have a window with 34 lines: > > 1 > 2 > 3 > . > . > . > 33 > 34 > > If I move the cursor downward with the down arrow, I can reach > line 33. At line 34 (last line of the window), Emacs scrolls to > have: > > 17 > 18 > 19 > . > . > . > 49 > 50 > > with the cursor on line 34. Then, with the down arrow, I can put the > cursor on line 50, which remains the last line of the window. With > the up arrow, I put the cursor on line 40. With the mouse wheel, I > scroll downward (one time), then upward. I still have lines 17 to 50 > with the cursor on line 40. With the down arrow, I can reach line 49, > but at line 50, Emacs scrolls to have lines 33 to 66, while before, > the cursor could be on line 50 as the last line of the window. Like I said, there's some factor at work here that needs to be identified. Which is why I need a reproduction recipe. Alternatively, someone else who can reproduce this are welcome to debug this and propose analysis and/or fix. Thanks.