From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Sebastian Tennant Newsgroups: gmane.emacs.help Subject: Re: Macro used for dynamic setting of font-lock-keywords Date: Sun, 03 Jun 2007 12:39:48 +0300 Message-ID: <874plpml5n.fsf@moley.org> References: <874pm0573o.fsf@lion.rapttech.com.au> <87lkfb4nj4.fsf@lion.rapttech.com.au> <87d50n3pvk.fsf@lion.rapttech.com.au> <200705272145.l4RLjHGn005421@localhost.localdomain> <87sl9he1zv.fsf@moley.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1180863497 30552 80.91.229.12 (3 Jun 2007 09:38:17 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 3 Jun 2007 09:38:17 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun Jun 03 11:38:16 2007 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1HumXO-00058a-1H for geh-help-gnu-emacs@m.gmane.org; Sun, 03 Jun 2007 11:38:14 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HumXN-0003TA-IJ for geh-help-gnu-emacs@m.gmane.org; Sun, 03 Jun 2007 05:38:13 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HumX8-0003T1-W0 for help-gnu-emacs@gnu.org; Sun, 03 Jun 2007 05:37:59 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HumX8-0003Si-At for help-gnu-emacs@gnu.org; Sun, 03 Jun 2007 05:37:58 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HumX8-0003Se-28 for help-gnu-emacs@gnu.org; Sun, 03 Jun 2007 05:37:58 -0400 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HumX7-0005ag-Hn for help-gnu-emacs@gnu.org; Sun, 03 Jun 2007 05:37:57 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HumWw-00013Y-5O for help-gnu-emacs@gnu.org; Sun, 03 Jun 2007 11:37:46 +0200 Original-Received: from 85.105.17.65 ([85.105.17.65]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 03 Jun 2007 11:37:46 +0200 Original-Received: from sebyte by 85.105.17.65 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 03 Jun 2007 11:37:46 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 31 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 85.105.17.65 User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.95 (gnu/linux) Cancel-Lock: sha1:2ys97qij2BQ51KVVM92YSGGs2WY= X-detected-kernel: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:44635 Archived-At: Quoth Kevin Rodgers : > Sebastian Tennant wrote: >> Quoth Xavier Maillard : >>> Hi, >>> >>> seem to get used as often as it probably should. I've seen people post 20+ >>> lines of elisp to this list to do something which could be achieved more >>> reliably with 4 or five lines of defadvice. >>> >>> Advice is considered as *dangerous* and not to be used extensively. >>> >> Indeed this is what I've been lead to believe. I think RMS' position >> on defadvice, which confirms this, is knocking about somewhere. > > I think RMS' position is that defadvice should not be used within Emacs > itself. But the inclusion of defadvice.el in Emacs is tacit > acknowledgement of its usefulness: When there is no variable or hook > function that the user can customize to achieve some new behavior, > defadvice allows you to modify the behavior of a function _without > duplicating its original definition in its entirety_. Thus you can > write a very small piece of code that is *more* likely to continue > to work over time, even as the implementation of the underlying function > evolves within Emacs, and in conjunction with other customizations of > the function. That makes it *less* dangerous than the naive approach of > copy-and-paste. Ah. Everything is illuminated. Many thanks. Sebastian