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#29002: it.first_visible_x is erroneously 0 while horizontal scrolling. Date: Sun, 05 Nov 2017 20:12:26 +0200 Message-ID: <83375stx11.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1509905590 17789 195.159.176.226 (5 Nov 2017 18:13:10 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 5 Nov 2017 18:13:10 +0000 (UTC) Cc: 29002@debbugs.gnu.org To: Keith David Bershatsky Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Nov 05 19:13:06 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 1eBPPu-0004Sv-Px for geb-bug-gnu-emacs@m.gmane.org; Sun, 05 Nov 2017 19:13:06 +0100 Original-Received: from localhost ([::1]:45281 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBPQ2-0000MW-9w for geb-bug-gnu-emacs@m.gmane.org; Sun, 05 Nov 2017 13:13:14 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36073) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBPPt-0000MJ-Fh for bug-gnu-emacs@gnu.org; Sun, 05 Nov 2017 13:13:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eBPPq-00074l-BY for bug-gnu-emacs@gnu.org; Sun, 05 Nov 2017 13:13:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:43899) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eBPPq-00074d-7f for bug-gnu-emacs@gnu.org; Sun, 05 Nov 2017 13:13:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1eBPPq-00013w-37 for bug-gnu-emacs@gnu.org; Sun, 05 Nov 2017 13:13:02 -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, 05 Nov 2017 18:13:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 29002 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 29002-submit@debbugs.gnu.org id=B29002.15099055564052 (code B ref 29002); Sun, 05 Nov 2017 18:13:02 +0000 Original-Received: (at 29002) by debbugs.gnu.org; 5 Nov 2017 18:12:36 +0000 Original-Received: from localhost ([127.0.0.1]:52580 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eBPPQ-00013H-Eu for submit@debbugs.gnu.org; Sun, 05 Nov 2017 13:12:36 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:45007) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eBPPO-000134-IQ for 29002@debbugs.gnu.org; Sun, 05 Nov 2017 13:12:35 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eBPPG-0006qb-5p for 29002@debbugs.gnu.org; Sun, 05 Nov 2017 13:12:29 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:39399) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBPPG-0006qX-2I; Sun, 05 Nov 2017 13:12:26 -0500 Original-Received: from [176.228.60.248] (port=1859 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1eBPPF-0007l0-1n; Sun, 05 Nov 2017 13:12:25 -0500 In-reply-to: (message from Keith David Bershatsky on Sun, 05 Nov 2017 08:59:47 -0800) 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:139481 Archived-At: > Date: Sun, 05 Nov 2017 08:59:47 -0800 > From: Keith David Bershatsky > Cc: 29002@debbugs.gnu.org > > Step # 1: Download a fresh copy of the emacs-26 branch. > > Step # 2: Inside the function `set_window_hscroll` within window.c, add a message just before the function returns. > > AUTO_STRING (my_string_one, "window.c: set_window_hscroll"); > CALLN (Fmessage, my_string_one); > > Step # 3: Build the new Emacs, and launch without any user configuration. > > Step # 4: From the Welcome screen, type: C-r > > Step # 5: Slowly type the word Emacs and watch the echo area as you type each letter. > > Inasmuch as the function `set_window_hscroll` is being called each time we type a letter, the proposed fix to #29002 causes a thorough redisplay after every keystroke while using isearch. This is probably not limited to isearch -- it was just the first occasion where the side affect was immediately noticeable. OK, I made thorough redisplay happen in fewer situations.