From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Proposal to improve the nomenclature of scrolling directions Date: Sat, 10 Nov 2012 21:09:31 +0200 Message-ID: <837gptxok4.fsf@gnu.org> References: <87a9uvv6ng.fsf@uwakimon.sk.tsukuba.ac.jp> <87bof9s7cl.fsf@spindle.srvr.nix> <874nl0ov8g.fsf@spindle.srvr.nix> <20635.63115.874182.168553@winooski.ccs.neu.edu> <87liecnelf.fsf@spindle.srvr.nix> <83390k0wgy.fsf@gnu.org> <83sj8jz0rs.fsf@gnu.org> <83txsxykcp.fsf@gnu.org> <509E3607.6070500@gmx.at> <83obj5y94x.fsf@gnu.org> <509E6071.5030102@gmx.at> <83ip9dy0kp.fsf@gnu.org> <509EA1DE.5060105@gmx.at> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1352574576 27566 80.91.229.3 (10 Nov 2012 19:09:36 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 10 Nov 2012 19:09:36 +0000 (UTC) Cc: dan@haxney.org, rms@gnu.org, eli@barzilay.org, emacs-devel@gnu.org, nix@esperi.org.uk, monnier@iro.umontreal.ca, dmoncayo@gmail.com, stephen@xemacs.org To: martin rudalics Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Nov 10 20:09:44 2012 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 1TXGR4-0001Uq-Gd for ged-emacs-devel@m.gmane.org; Sat, 10 Nov 2012 20:09:42 +0100 Original-Received: from localhost ([::1]:41051 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TXGQv-0005eD-32 for ged-emacs-devel@m.gmane.org; Sat, 10 Nov 2012 14:09:33 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:45153) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TXGQq-0005cD-5n for emacs-devel@gnu.org; Sat, 10 Nov 2012 14:09:31 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TXGQn-00008G-3h for emacs-devel@gnu.org; Sat, 10 Nov 2012 14:09:28 -0500 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:43108) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TXGQm-00005p-Po; Sat, 10 Nov 2012 14:09:25 -0500 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0MDA00A00D4JN800@a-mtaout22.012.net.il>; Sat, 10 Nov 2012 21:09:22 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MDA00AO7D7MG330@a-mtaout22.012.net.il>; Sat, 10 Nov 2012 21:09:22 +0200 (IST) In-reply-to: <509EA1DE.5060105@gmx.at> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.172 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:154807 Archived-At: > Date: Sat, 10 Nov 2012 19:50:06 +0100 > From: martin rudalics > CC: dan@haxney.org, rms@gnu.org, eli@barzilay.org, emacs-devel@gnu.org, > nix@esperi.org.uk, monnier@iro.umontreal.ca, dmoncayo@gmail.com, > stephen@xemacs.org > > > I think the only commands that should move point in this mode are > > those which, well, move point. That is, goto-char, C-f/C-b, mouse-1 > > click, etc. And these should cause display to scroll so that point > > comes into view. > > How would commands calling `set-window-start' or `recenter' be > classified in this regard? The former won't move point, I guess. The latter will. > >> A basic invariant of Emacs is that at top-level any buffer's `point' > >> coincides with `window-point' of the selected window, provided the > >> buffer appears there. Violating this invariant means we have to rethink > >> lots of code, including things as fragile as the window configuration > >> code. > > > > I don't think anything I said violates this. What am I missing? > > Ok. Then `window-start' <= `window-point' <= `window-end' is no more an > invariant? I think so.