From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: lee Newsgroups: gmane.emacs.help Subject: overlays? Date: Tue, 18 Mar 2014 02:40:35 +0100 Organization: my virtual residence Message-ID: <87vbvcgu7g.fsf@yun.yagibdah.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1395106857 11954 80.91.229.3 (18 Mar 2014 01:40:57 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 18 Mar 2014 01:40:57 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Mar 18 02:41:06 2014 Return-path: Envelope-to: geh-help-gnu-emacs@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 1WPj1d-0002nJ-LP for geh-help-gnu-emacs@m.gmane.org; Tue, 18 Mar 2014 02:41:05 +0100 Original-Received: from localhost ([::1]:32944 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WPj1d-0002ID-2L for geh-help-gnu-emacs@m.gmane.org; Mon, 17 Mar 2014 21:41:05 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52536) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WPj1M-0002Hz-Tm for help-gnu-emacs@gnu.org; Mon, 17 Mar 2014 21:40:54 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WPj1F-0006Pd-FQ for help-gnu-emacs@gnu.org; Mon, 17 Mar 2014 21:40:48 -0400 Original-Received: from client-194-42-186-216.muenet.net ([194.42.186.216]:37808 helo=yun.yagibdah.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WPj1F-0006PU-7b for help-gnu-emacs@gnu.org; Mon, 17 Mar 2014 21:40:41 -0400 Original-Received: from lee by yun.yagibdah.de with local (Exim 4.80.1) (envelope-from ) id 1WPj1D-0008Fg-4v for help-gnu-emacs@gnu.org; Tue, 18 Mar 2014 02:40:39 +0100 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Mail-Followup-To: help-gnu-emacs@gnu.org X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 194.42.186.216 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:96570 Archived-At: Hi, could someone please shed a light on the purpose of overlays? I`m wondering under what circumstances they are used, or need to be used. Are they a feature that has been obsoleted by font-lock, or are they still needed? The background is that I`ve made an extension to hi-lock.el, and hi-lock features alternatively using overlays or font-lock. My extension does not support overlays, and I`m wondering if support for overlays needs to be added or not. -- Knowledge is volatile and fluid. Software is power.