From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.help Subject: Re: overlays vs text properties Date: Wed, 13 Jul 2011 00:32:24 -0700 Message-ID: <87pqleiqk7.fsf@ericabrahamsen.net> References: <87k4bmk8u3.fsf@ericabrahamsen.net> <87tyaqiqz8.fsf@ericabrahamsen.net> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1310542480 26890 80.91.229.12 (13 Jul 2011 07:34:40 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Wed, 13 Jul 2011 07:34:40 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Jul 13 09:34:35 2011 Return-path: Envelope-to: geh-help-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 1Qgtxr-0007gB-0Z for geh-help-gnu-emacs@m.gmane.org; Wed, 13 Jul 2011 09:34:35 +0200 Original-Received: from localhost ([::1]:60129 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qgtxq-00083L-1D for geh-help-gnu-emacs@m.gmane.org; Wed, 13 Jul 2011 03:34:34 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:47078) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qgtw4-00082N-NK for help-gnu-emacs@gnu.org; Wed, 13 Jul 2011 03:32:48 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Qgtw0-0007rr-8c for help-gnu-emacs@gnu.org; Wed, 13 Jul 2011 03:32:44 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:55328) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qgtvz-0007rb-OV for help-gnu-emacs@gnu.org; Wed, 13 Jul 2011 03:32:40 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Qgtvx-0006tV-KE for help-gnu-emacs@gnu.org; Wed, 13 Jul 2011 09:32:37 +0200 Original-Received: from 63.226.249.211 ([63.226.249.211]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 13 Jul 2011 09:32:37 +0200 Original-Received: from eric by 63.226.249.211 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 13 Jul 2011 09:32:37 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 32 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 63.226.249.211 User-Agent: Gnus/5.110018 (No Gnus v0.18) Emacs/23.2 (gnu/linux) Cancel-Lock: sha1:ohtlRJQIJzYWJIKbMi1cY+VmnLA= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 80.91.229.12 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:81566 Archived-At: On Wed, Jul 13 2011, Eli Zaretskii wrote: >> From: Eric Abrahamsen >> Cc: help-gnu-emacs@gnu.org >> Date: Wed, 13 Jul 2011 00:23:23 -0700 >> >> 1. I'll have a buffer and an indirect buffer on the same file. Each >> buffer will have a single "active" paragraph at any one time, but >> only one. So I don't think scaling is too much of an issue. I'm >> trying to create a "follow" situation, where a paragraph in the >> source buffer is matched to a paragraph in the indirect buffer, and >> these two paragraphs have (different) properties. But only the two >> paragraphs at one time, moving in unison. >> 2. This is mostly a visual effect (hence my leaning towards overlays), >> and copying text properties is not necessary. In fact, it would be >> annoying. >> 3. Overlapping would not be an issue -- within the "active" paragraphs >> there might be other properties present, but they would be separate >> from the overall paragraph property. >> >> I am trying to create a translation environment, by modifying an org-mode >> file so that I can move through one subtree while the indirect buffer >> displays mirror paragraphs in another subtree. I want to link >> source-language paragraphs with target-language paragraphs, so it's >> pretty crucial that movement be covered: wherever point goes in the main >> buffer, it should be tracked and mirrored in the indirect buffer. > > Sounds like overlays are better suited for this job, unless I'm > missing something. Only that there's no good way of moving overlays based on the movement of point!