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#46316: 27.1; wrong horizontal scroll with truncate-lines value t Date: Sun, 07 Feb 2021 17:34:58 +0200 Message-ID: <83mtwfnb6l.fsf@gnu.org> References: <868s7zew1y.fsf@gmail.com> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="11280"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 46316@debbugs.gnu.org To: ynyaaa@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Feb 07 16:35:09 2021 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 1l8m5d-0002om-2l for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 07 Feb 2021 16:35:09 +0100 Original-Received: from localhost ([::1]:47012 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l8m5c-0007uz-2f for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 07 Feb 2021 10:35:08 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54400) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l8m5W-0007ur-CQ for bug-gnu-emacs@gnu.org; Sun, 07 Feb 2021 10:35:02 -0500 Original-Received: from debbugs.gnu.org ([209.51.188.43]:36966) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l8m5V-0006Os-Pk for bug-gnu-emacs@gnu.org; Sun, 07 Feb 2021 10:35:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1l8m5V-0003pO-MM for bug-gnu-emacs@gnu.org; Sun, 07 Feb 2021 10:35:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 07 Feb 2021 15:35:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 46316 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: notabug Original-Received: via spool by 46316-submit@debbugs.gnu.org id=B46316.161271210014704 (code B ref 46316); Sun, 07 Feb 2021 15:35:01 +0000 Original-Received: (at 46316) by debbugs.gnu.org; 7 Feb 2021 15:35:00 +0000 Original-Received: from localhost ([127.0.0.1]:48512 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l8m5U-0003p6-G9 for submit@debbugs.gnu.org; Sun, 07 Feb 2021 10:35:00 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:36532) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1l8m5S-0003or-EQ for 46316@debbugs.gnu.org; Sun, 07 Feb 2021 10:34:58 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:59923) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l8m5M-0006OX-Gx; Sun, 07 Feb 2021 10:34:52 -0500 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:4672 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1l8m5G-0003l4-0B; Sun, 07 Feb 2021 10:34:51 -0500 In-Reply-To: <868s7zew1y.fsf@gmail.com> (ynyaaa@gmail.com) 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:199506 Archived-At: > Cc: 46316@debbugs.gnu.org > From: ynyaaa@gmail.com > Date: Mon, 08 Feb 2021 00:28:57 +0900 > > > I don't think this behavior is a bug. We only change the hscroll of a > > window when point moves, and in these two scenarios it doesn't move. > > I see no reason to assume that the user will necessarily want to have > > the window scroll, instead of keeping it at its current horizontal > > scroll. > > In the case of isearch, the hscroll is changed without point motion > when isearch fails. Yes, because the focus changes into the minibuffer, where we show the failure message. > In the case of image-toggle-display, the hscroll is changed without > point motion when typing 'C-c C-c' for the first time. Yes, and for a similar good reason. I don't really understand the insistence: you can easily cause the window to auto-scroll if you move point by one character. Emacs cannot possibly guess which part of the display is more important for the user in situations like this.