From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: storm@cua.dk (Kim F. Storm) Newsgroups: gmane.emacs.devel Subject: Re: Should overlays evaporate by default? Date: Thu, 12 May 2005 10:18:27 +0200 Message-ID: References: <200505101556.j4AFupmb015431@brains.moreideas.ca> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1115886492 22348 80.91.229.2 (12 May 2005 08:28:12 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Thu, 12 May 2005 08:28:12 +0000 (UTC) Cc: bob@rattlesnake.com, monnier@iro.umontreal.ca, Peter Whaite , emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu May 12 10:28:02 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1DW92J-00031N-B7 for ged-emacs-devel@m.gmane.org; Thu, 12 May 2005 10:27:15 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1DW9BD-00080y-7m for ged-emacs-devel@m.gmane.org; Thu, 12 May 2005 04:36:27 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1DW95Q-0004xP-2l for emacs-devel@gnu.org; Thu, 12 May 2005 04:30:28 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1DW95O-0004wm-N1 for emacs-devel@gnu.org; Thu, 12 May 2005 04:30:26 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1DW95L-0004nj-Px for emacs-devel@gnu.org; Thu, 12 May 2005 04:30:26 -0400 Original-Received: from [212.88.64.25] (helo=mail-relay.sonofon.dk) by monty-python.gnu.org with smtp (Exim 4.34) id 1DW90J-0008Bd-0r for emacs-devel@gnu.org; Thu, 12 May 2005 04:25:11 -0400 Original-Received: (qmail 84461 invoked from network); 12 May 2005 08:18:20 -0000 Original-Received: from unknown (HELO kfs-l.imdomain.dk.cua.dk) (213.83.150.2) by 0 with SMTP; 12 May 2005 08:18:20 -0000 Original-To: rms@gnu.org In-Reply-To: (Richard Stallman's message of "Wed, 11 May 2005 12:27:52 -0400") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:37015 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:37015 Richard Stallman writes: > Perhaps it would be better for overlays to evaporate by default. > > I tend to agree this would make things better in most cases, and only > be wrong in a few. However, it is an incompatible change, and in some > places it WILL break code. And so, we shouldn't do ANYTHING about it in 22.x > > It occur to me that we could make it easier to find those places. > Suppose that by default the `evaporate' property is set to `display-warning'. > Suppose that in this case, when the overlay becomes empty, it evaporates > and displays a warning using `display-warning'. We can do that immediately AFTER the release. > > On seeing the warningm programmers would adapt their programs to set > `evaporate' either to t or nil and thus prevent the warning. > > In Emacs 23, we could change the default to t. Eventually, just before the 23.x release, yes. -- Kim F. Storm http://www.cua.dk