From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Emacs terminology (not again!?) Date: Sat, 18 Jan 2014 12:01:21 +0100 Message-ID: <87r485wo3i.fsf@fencepost.gnu.org> References: <877gact76s.fsf@gnu.org> <34c8c13b-c5c6-4e5a-9248-b09d5d1936da@default> <87eh4hkq6c.fsf@fencepost.gnu.org> <52D9E005.6030509@dancol.org> <52D9EEDD.9060109@dancol.org> <83wqhxk7sm.fsf@gnu.org> <874n51y8i6.fsf@fencepost.gnu.org> <83ppnpk1dn.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1390042891 30044 80.91.229.3 (18 Jan 2014 11:01:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 18 Jan 2014 11:01:31 +0000 (UTC) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Jan 18 12:01:38 2014 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 1W4Tej-00048F-V6 for ged-emacs-devel@m.gmane.org; Sat, 18 Jan 2014 12:01:38 +0100 Original-Received: from localhost ([::1]:41937 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W4Tej-0001J4-JB for ged-emacs-devel@m.gmane.org; Sat, 18 Jan 2014 06:01:37 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35980) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W4Teg-0001Ix-Cy for emacs-devel@gnu.org; Sat, 18 Jan 2014 06:01:35 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1W4Tee-0002pG-MX for emacs-devel@gnu.org; Sat, 18 Jan 2014 06:01:34 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:44005) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W4Tee-0002p8-JG for emacs-devel@gnu.org; Sat, 18 Jan 2014 06:01:32 -0500 Original-Received: from localhost ([127.0.0.1]:51177 helo=lola) by fencepost.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1W4Ted-000786-SW; Sat, 18 Jan 2014 06:01:32 -0500 Original-Received: by lola (Postfix, from userid 1000) id 0EA76E05F1; Sat, 18 Jan 2014 12:01:21 +0100 (CET) In-Reply-To: <83ppnpk1dn.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 18 Jan 2014 12:52:52 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::e 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:168665 Archived-At: Eli Zaretskii writes: >> From: David Kastrup >> Date: Sat, 18 Jan 2014 09:55:13 +0100 >> >> > It is a UI design decision in Emacs to always show point on screen. >> > But nothing prevents us from writing a mode that leaves point off >> > screen, or even abandoning that decision if we want (and I'm not >> > saying we do). The infrastructure is there, check out the vscroll >> > thingy and window-vscroll. >> >> That scrolls "graphically" > > Yes, I don't see how this is important for the issue at hand. On a > text terminal, each character counts as a single pixel. > >> (no idea whether it works on text terminals): > > It doesn't currently, but that's just because no one bothered to > implement that. > >> basically it displaces your screen window by a given distance. > > Yes. > >> There is no concept of a "window start" in terms of a text position >> that can move away from point > > A window start is just a buffer position, so I'm not following your > argument here. > >> and no real way to implement that. > > ??? Why not? Perhaps you mean no way to implement that easily, or > maybe in Lisp alone. If the task is "let the window start with the given buffer position even if this makes point go off-screen", a reasonably simple task description, window-vscroll does not seem like a useful tool for that. -- David Kastrup