From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: lee Newsgroups: gmane.emacs.help Subject: Re: setting the mode of a buffer Date: Fri, 07 Mar 2014 12:28:06 +0100 Organization: my virtual residence Message-ID: <874n3ament.fsf@yun.yagibdah.de> References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1394193881 1553 80.91.229.3 (7 Mar 2014 12:04:41 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 7 Mar 2014 12:04:41 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Mar 07 13:04:48 2014 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WLtWA-0000PF-QP for geh-help-gnu-emacs@m.gmane.org; Fri, 07 Mar 2014 13:04:46 +0100 Original-Received: from localhost ([::1]:35889 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WLtWA-00068y-BD for geh-help-gnu-emacs@m.gmane.org; Fri, 07 Mar 2014 07:04:46 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60540) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WLtVn-0005yF-RP for help-gnu-emacs@gnu.org; Fri, 07 Mar 2014 07:04:29 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WLtVb-00057q-EN for help-gnu-emacs@gnu.org; Fri, 07 Mar 2014 07:04:23 -0500 Original-Received: from client-194-42-186-216.muenet.net ([194.42.186.216]:44477 helo=yun.yagibdah.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WLtVb-00057H-6o for help-gnu-emacs@gnu.org; Fri, 07 Mar 2014 07:04:11 -0500 Original-Received: from lee by yun.yagibdah.de with local (Exim 4.80.1) (envelope-from ) id 1WLtVV-0007Rh-U1 for help-gnu-emacs@gnu.org; Fri, 07 Mar 2014 13:04:05 +0100 In-Reply-To: (Joost Kremers's message of "7 Mar 2014 08:47:54 GMT") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Mail-Followup-To: help-gnu-emacs@gnu.org X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 194.42.186.216 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:96288 Archived-At: Joost Kremers writes: > lee wrote: >> Perhaps I=C2=B4m going all wrong about this and there is a better way to >> reload a mode? > > It's possible you don't need to reload the mode at all. This is Lisp, > after all, not C. If you change a function definition, you only need to > eval it (eval-defun, bound to C-M-x in emacs-lisp-mode), or you can > recompile the entire file. > > If you change a defvar, eval'ing that won't load the new value, but you > can simply use setq to set the new value. > > IME it's hardly never necessary to actually unload a feature and then > reload it. The mode is byte-compiled --- it mainly provides some syntax highlighting. Mostly, changes are to defcustoms to add another keyword for the highlighting. When I make a change, I byte-compile again. From there on, I need some way to apply the changes. So far, I=C2=B4ve been reloading the mode to achieve this. Are you saying that changes are magically applied by recompiling? Or should I use 'M-x eval-defun my-mode' to apply them after recompiling? And when I do so, wouldn=C2=B4t emacs figure that it already knows the mode because it=C2=B4s already loaded and continue to use the previous version? --=20 Knowledge is volatile and fluid. Software is power.