From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: Macro used for dynamic setting of font-lock-keywords Date: Fri, 01 Jun 2007 21:41:15 -0600 Message-ID: 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=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1180755716 14984 80.91.229.12 (2 Jun 2007 03:41:56 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sat, 2 Jun 2007 03:41:56 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Jun 02 05:41:54 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 1HuKUz-0005Vt-Nx for geh-help-gnu-emacs@m.gmane.org; Sat, 02 Jun 2007 05:41:53 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HuKUz-0006TL-BM for geh-help-gnu-emacs@m.gmane.org; Fri, 01 Jun 2007 23:41:53 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HuKUm-0006SE-1d for help-gnu-emacs@gnu.org; Fri, 01 Jun 2007 23:41:40 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HuKUl-0006QE-CF for help-gnu-emacs@gnu.org; Fri, 01 Jun 2007 23:41:39 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HuKUl-0006QB-9B for help-gnu-emacs@gnu.org; Fri, 01 Jun 2007 23:41:39 -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 1HuKUk-0004yO-SS for help-gnu-emacs@gnu.org; Fri, 01 Jun 2007 23:41:39 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HuKUX-00038v-Ak for help-gnu-emacs@gnu.org; Sat, 02 Jun 2007 05:41:26 +0200 Original-Received: from c-67-162-159-170.hsd1.co.comcast.net ([67.162.159.170]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 02 Jun 2007 05:41:25 +0200 Original-Received: from kevin.d.rodgers by c-67-162-159-170.hsd1.co.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 02 Jun 2007 05:41:25 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 28 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: c-67-162-159-170.hsd1.co.comcast.net User-Agent: Thunderbird 1.5.0.12 (Macintosh/20070509) In-Reply-To: <87sl9he1zv.fsf@moley.org> 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:44596 Archived-At: 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. -- Kevin Rodgers Denver, Colorado, USA