From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#16475: enhancement request: remove vertical scroll bar automatically when not needed Date: Thu, 26 Oct 2017 18:59:02 +0300 Message-ID: <8360b199yx.fsf@gnu.org> References: <8bfbddfb-237e-47b1-aed7-b28fc97d1f92@default> <59F04174.6090601@gmx.at> <83po9b8f53.fsf@gnu.org> <59F1954B.7080705@gmx.at> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1509033711 3198 195.159.176.226 (26 Oct 2017 16:01:51 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 26 Oct 2017 16:01:51 +0000 (UTC) Cc: 16475@debbugs.gnu.org, esq@lawlist.com To: martin rudalics Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Oct 26 18:01:44 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e7kaz-0006NQ-Et for geb-bug-gnu-emacs@m.gmane.org; Thu, 26 Oct 2017 18:01:25 +0200 Original-Received: from localhost ([::1]:53652 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e7kb3-00081A-K7 for geb-bug-gnu-emacs@m.gmane.org; Thu, 26 Oct 2017 12:01:29 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47555) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e7kZj-0006SZ-O3 for bug-gnu-emacs@gnu.org; Thu, 26 Oct 2017 12:00:09 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e7kZf-0006c7-3T for bug-gnu-emacs@gnu.org; Thu, 26 Oct 2017 12:00:07 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:54824) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1e7kZf-0006bS-0c for bug-gnu-emacs@gnu.org; Thu, 26 Oct 2017 12:00:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1e7kZe-0004Xw-Q6 for bug-gnu-emacs@gnu.org; Thu, 26 Oct 2017 12:00:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 26 Oct 2017 16:00:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 16475 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 16475-submit@debbugs.gnu.org id=B16475.150903356317389 (code B ref 16475); Thu, 26 Oct 2017 16:00:02 +0000 Original-Received: (at 16475) by debbugs.gnu.org; 26 Oct 2017 15:59:23 +0000 Original-Received: from localhost ([127.0.0.1]:35272 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e7kZ0-0004WP-Se for submit@debbugs.gnu.org; Thu, 26 Oct 2017 11:59:23 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:56352) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e7kYz-0004WC-1z for 16475@debbugs.gnu.org; Thu, 26 Oct 2017 11:59:21 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e7kYq-0005QT-Jt for 16475@debbugs.gnu.org; Thu, 26 Oct 2017 11:59:15 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:58437) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e7kYq-0005QN-GZ; Thu, 26 Oct 2017 11:59:12 -0400 Original-Received: from [176.228.60.248] (port=2119 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1e7kYp-0005MR-SU; Thu, 26 Oct 2017 11:59:12 -0400 In-reply-to: <59F1954B.7080705@gmx.at> (message from martin rudalics on Thu, 26 Oct 2017 09:56:59 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:139014 Archived-At: > Date: Thu, 26 Oct 2017 09:56:59 +0200 > From: martin rudalics > CC: esq@lawlist.com, 16475@debbugs.gnu.org > > > More importantly, removing the scroll bar resizes the external > > dimensions of the frame, to keep the windows' dimensions unchanged > > (otherwise, we couldn't remove the scroll bars at the very end of the > > window's redisplay). You can see this in action if you toggle > > scroll-bar-mode on and off. So when the window shows _almost_ all the > > text of the buffer, the frame would annoyingly oscillate in its > > horizontal dimension. This could be caused, for example, by echo-area > > messages that resize the mini-window from time to time, or by the user > > adjusting the window size. > > Obviously, an equivalent of ‘set-window-scroll-bars’ would have to be > used here. I agree, but then the right place to call this is not from redisplay, but from keyboard.c, before it calls read_char (which calls redisplay). set-window-scroll-bars triggers a redisplay cycle, so calling it from (the end of) redisplay is not very wise, IMO.