From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: `font-lock-extend-region-functions' vs. `font-lock-extend-after-change-region-function' Date: Tue, 28 Apr 2009 12:10:07 -0400 Message-ID: References: <87prewlrl9.fsf@freebits.de> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1240935305 17412 80.91.229.12 (28 Apr 2009 16:15:05 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 28 Apr 2009 16:15:05 +0000 (UTC) Cc: emacs-devel@gnu.org To: "Tobias C. Rittweiler" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Apr 28 18:14:56 2009 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1LypxN-00007e-E5 for ged-emacs-devel@m.gmane.org; Tue, 28 Apr 2009 18:14:53 +0200 Original-Received: from localhost ([127.0.0.1]:54730 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LypxL-0003Zr-UW for ged-emacs-devel@m.gmane.org; Tue, 28 Apr 2009 12:14:51 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Lypsw-0001vB-Jl for emacs-devel@gnu.org; Tue, 28 Apr 2009 12:10:18 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Lypss-0001si-5G for emacs-devel@gnu.org; Tue, 28 Apr 2009 12:10:18 -0400 Original-Received: from [199.232.76.173] (port=41617 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Lypsr-0001sd-QC for emacs-devel@gnu.org; Tue, 28 Apr 2009 12:10:13 -0400 Original-Received: from ironport2-out.pppoe.ca ([206.248.154.182]:50186 helo=ironport2-out.teksavvy.com) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1Lypsr-0003J0-C7 for emacs-devel@gnu.org; Tue, 28 Apr 2009 12:10:13 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AsIEADfH9klFxLKx/2dsb2JhbACBUM4eg3MFhTY X-IronPort-AV: E=Sophos;i="4.40,261,1238990400"; d="scan'208";a="37716297" Original-Received: from 69-196-178-177.dsl.teksavvy.com (HELO ceviche.home) ([69.196.178.177]) by ironport2-out.teksavvy.com with ESMTP; 28 Apr 2009 12:10:08 -0400 Original-Received: by ceviche.home (Postfix, from userid 20848) id 1E68DB4201; Tue, 28 Apr 2009 12:10:07 -0400 (EDT) In-Reply-To: <87prewlrl9.fsf@freebits.de> (Tobias C. Rittweiler's message of "Tue, 28 Apr 2009 17:34:42 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.92 (gnu/linux) X-detected-operating-system: by monty-python.gnu.org: Genre and OS details not recognized. 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:110518 Archived-At: > what is the difference between the variables > `font-lock-extend-region-functions' > and > `font-lock-extend-after-change-region-function' ? > In particular, how do they relate? Which should be used for what? Have you read the Elisp manual's discussion about font-locking multiline elements? The "right" answer is usually font-lock-extend-region-functions, but it's hard to tell without knowing anything more (sometimes it's difficult/impossible to write the necessary font-lock-extend-region-functions). > I face the following problem: Font-lock, perhaps just jit-lock (I'm > using that), calls `font-lock-fontify-region-function' with start and > end values pretty much arbitrary in the buffer. Yes, that's normal. That's what font-lock-extend-region-functions is for. Stefan