From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Re: "... the window start at a meaningless point within a line." Date: Tue, 27 Oct 2015 17:35:33 +0000 Message-ID: <20151027173533.GD2401@acm.fritz.box> References: <20151016201238.GD2779@acm.fritz.box> <83twpp51xz.fsf@gnu.org> <20151017115738.GA2522@acm.fritz.box> <83oafx4qsb.fsf@gnu.org> <83lhb14o6e.fsf@gnu.org> <83k2ql4lsy.fsf@gnu.org> <20151018150052.GD1639@acm.fritz.box> <83lhb0hy0h.fsf@gnu.org> <20151019102755.GB2438@acm.fritz.box> <20151027134025.GA2401@acm.fritz.box> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1445967261 20491 80.91.229.3 (27 Oct 2015 17:34:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 27 Oct 2015 17:34:21 +0000 (UTC) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Oct 27 18:34:12 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Zr88O-0002u9-W6 for ged-emacs-devel@m.gmane.org; Tue, 27 Oct 2015 18:34:09 +0100 Original-Received: from localhost ([::1]:32957 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zr88N-0005w7-Ni for ged-emacs-devel@m.gmane.org; Tue, 27 Oct 2015 13:34:07 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:58528) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zr88A-0005vY-TK for emacs-devel@gnu.org; Tue, 27 Oct 2015 13:33:55 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zr887-0001De-2D for emacs-devel@gnu.org; Tue, 27 Oct 2015 13:33:54 -0400 Original-Received: from mail.muc.de ([193.149.48.3]:31345) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zr886-0001D3-PZ for emacs-devel@gnu.org; Tue, 27 Oct 2015 13:33:51 -0400 Original-Received: (qmail 47084 invoked by uid 3782); 27 Oct 2015 17:33:49 -0000 Original-Received: from acm.muc.de (p579E86F6.dip0.t-ipconnect.de [87.158.134.246]) by colin.muc.de (tmda-ofmipd) with ESMTP; Tue, 27 Oct 2015 18:33:48 +0100 Original-Received: (qmail 5426 invoked by uid 1000); 27 Oct 2015 17:35:33 -0000 Content-Disposition: inline In-Reply-To: <20151027134025.GA2401@acm.fritz.box> User-Agent: Mutt/1.5.23 (2014-03-12) X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x X-Received-From: 193.149.48.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:192738 Archived-At: Hello, Eli. On Tue, Oct 27, 2015 at 01:40:25PM +0000, Alan Mackenzie wrote: > Another point I'd appreciate clarification on. Some while back, for > example, your mail of Fri, 16 Oct 2015 20:26:08 +0300, we were talking > about the order of screen positions varying non-linearly with buffer > positions. Is it true that if a continuation line begins at buffer > position A, then for x < A, buffer position x will be displayed on a > previous line? (And also for x > A, x will be displayed on this line or > a subsequent one?) I've just found out the answer for myself. These relationships, however desirable they might be, do not hold. So software which needs to determine which (display) line a character is on needs to use the move_it_.... routines, somehow. -- Alan Mackenzie (Nuremberg, Germany).