From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Unbalanced change hooks (part 2) Date: Thu, 01 Sep 2016 09:33:43 -0400 Message-ID: References: <20160731121642.GB2205@acm.fritz.box> <83a8gxq288.fsf@gnu.org> <87h9ag3j8c.fsf@russet.org.uk> <87pooqcolw.fsf@russet.org.uk> <87wpiwxgvy.fsf@russet.org.uk> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1472736726 8224 195.159.176.226 (1 Sep 2016 13:32:06 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 1 Sep 2016 13:32:06 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) Cc: emacs-devel@gnu.org To: phillip.lord@russet.org.uk (Phillip Lord) Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Sep 01 15:31:56 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bfS5x-0000bF-1n for ged-emacs-devel@m.gmane.org; Thu, 01 Sep 2016 15:31:53 +0200 Original-Received: from localhost ([::1]:37156 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bfS5u-0000vN-NA for ged-emacs-devel@m.gmane.org; Thu, 01 Sep 2016 09:31:50 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60174) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bfS52-0000uD-BI for emacs-devel@gnu.org; Thu, 01 Sep 2016 09:30:57 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bfS4v-00049l-7u for emacs-devel@gnu.org; Thu, 01 Sep 2016 09:30:56 -0400 Original-Received: from chene.dit.umontreal.ca ([132.204.246.20]:39355) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bfS4v-00048c-45 for emacs-devel@gnu.org; Thu, 01 Sep 2016 09:30:49 -0400 Original-Received: from pastel.home (lechon.iro.umontreal.ca [132.204.27.242]) by chene.dit.umontreal.ca (8.14.7/8.14.1) with ESMTP id u81DVQ4C002179; Thu, 1 Sep 2016 09:31:27 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id B6F2460324; Thu, 1 Sep 2016 09:33:43 -0400 (EDT) In-Reply-To: <87wpiwxgvy.fsf@russet.org.uk> (Phillip Lord's message of "Thu, 01 Sep 2016 07:40:01 +0100") X-NAI-Spam-Flag: NO X-NAI-Spam-Threshold: 5 X-NAI-Spam-Score: 0 X-NAI-Spam-Rules: 1 Rules triggered RV5784=0 X-NAI-Spam-Version: 2.3.0.9418 : core <5784> : inlines <5166> : streams <1693528> : uri <2279489> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 132.204.246.20 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:207060 Archived-At: > Okay, yes, I understand now, and yes, this should be conservative, in > the sense that it works for all changes, I guess. We are making the > assumption here that "start" is always consistent between b-c-f and > a-c-f, No, we don't make such an assumption either. The assumption we make is that the region passed to a-c-f is within the region passed to b-c-f (i.e. is tighter). Stefan