From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#9607: incorrect behavior with "auto-hscroll-mode nil" in ncurses/vt220 text operation; wrong in 23 but ok in 22.1 Date: Tue, 27 Sep 2011 02:07:20 -0400 Message-ID: References: <201109262119.p8QLJ5eU004406@siobhan.> <6.2.5.6.2.20110926204557.05af1bb8@flumedata.com> <6.2.5.6.2.20110926224200.05af3bc0@flumedata.com> Reply-To: Eli Zaretskii NNTP-Posting-Host: lo.gmane.org X-Trace: dough.gmane.org 1317103706 29808 80.91.229.12 (27 Sep 2011 06:08:26 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 27 Sep 2011 06:08:26 +0000 (UTC) Cc: 9607@debbugs.gnu.org, david_lawless@flumedata.com To: Glenn Morris Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Sep 27 08:08:22 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1R8Qq5-0005Ai-Mq for geb-bug-gnu-emacs@m.gmane.org; Tue, 27 Sep 2011 08:08:21 +0200 Original-Received: from localhost ([::1]:55150 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8Qq4-0005Ro-RZ for geb-bug-gnu-emacs@m.gmane.org; Tue, 27 Sep 2011 02:08:20 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:51417) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8Qq1-0005RP-E0 for bug-gnu-emacs@gnu.org; Tue, 27 Sep 2011 02:08:18 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R8Qpz-0004KN-6q for bug-gnu-emacs@gnu.org; Tue, 27 Sep 2011 02:08:17 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:49388) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R8Qpz-0004KI-2h for bug-gnu-emacs@gnu.org; Tue, 27 Sep 2011 02:08:15 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1R8Qqk-0004nE-Ae for bug-gnu-emacs@gnu.org; Tue, 27 Sep 2011 02:09:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 27 Sep 2011 06:09:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 9607 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 9607-submit@debbugs.gnu.org id=B9607.131710369218366 (code B ref 9607); Tue, 27 Sep 2011 06:09:02 +0000 Original-Received: (at 9607) by debbugs.gnu.org; 27 Sep 2011 06:08:12 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1R8Qpw-0004mA-Co for submit@debbugs.gnu.org; Tue, 27 Sep 2011 02:08:12 -0400 Original-Received: from fencepost.gnu.org ([140.186.70.10]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1R8Qpt-0004m3-VK for 9607@debbugs.gnu.org; Tue, 27 Sep 2011 02:08:10 -0400 Original-Received: from eliz by fencepost.gnu.org with local (Exim 4.71) (envelope-from ) id 1R8Qp6-0006b6-6J; Tue, 27 Sep 2011 02:07:20 -0400 In-reply-to: (message from Glenn Morris on Tue, 27 Sep 2011 00:01:50 -0400) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Tue, 27 Sep 2011 02:09:02 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 1) X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:51916 Archived-At: > From: Glenn Morris > Date: Tue, 27 Sep 2011 00:01:50 -0400 > Cc: David Lawless > > emacs -Q --eval '(setq auto-hscroll-mode nil)' > > Evaluate: > (dotimes (j 5) > (insert "\n") > (dotimes (i 10) > (insert "0123456890 "))) > > Put point at start of first line of digits. > M-x scroll-left RET y > ;; Window now scrolled to right-hand end of lines > Down arrow ; first time is ok > Down arrow > -> second time window scrolls back to left-hand end of line > > > (setq line-move-visual nil) > > avoids the problem. > > I guess it's related to the 2009-07 changes to line-move-visual for hscroll. The problem is that line-move-visual assumes that the move begins with cursor positioned at point, which is false when auto-hscroll-mode is turned off and point is scrolled out of view. Before I dive into this mess (again), do we even want to support auto-hscroll-mode nil _and_ visual line movement? What if we tell line-move to invoke logical line movement instead when auto-hscroll-mode is off? Would someone object?