From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.help Subject: proper use of add-function Date: Tue, 22 May 2018 15:58:36 -0700 Message-ID: <87efi3xppf.fsf@ericabrahamsen.net> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1527029995 6770 195.159.176.226 (22 May 2018 22:59:55 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 22 May 2018 22:59:55 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed May 23 00:59:50 2018 Return-path: Envelope-to: geh-help-gnu-emacs@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 1fLGFy-0001e5-Pv for geh-help-gnu-emacs@m.gmane.org; Wed, 23 May 2018 00:59:50 +0200 Original-Received: from localhost ([::1]:58315 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLGI4-0004X2-Re for geh-help-gnu-emacs@m.gmane.org; Tue, 22 May 2018 19:02:00 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:49824) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLGHg-0004Ww-0T for help-gnu-emacs@gnu.org; Tue, 22 May 2018 19:01:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fLGHc-0007WA-UT for help-gnu-emacs@gnu.org; Tue, 22 May 2018 19:01:36 -0400 Original-Received: from [195.159.176.226] (port=41839 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fLGHc-0007Vk-O1 for help-gnu-emacs@gnu.org; Tue, 22 May 2018 19:01:32 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1fLGFT-00019c-04 for help-gnu-emacs@gnu.org; Wed, 23 May 2018 00:59:18 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 22 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:/nbAjRA3r1PMYlcD2YyVjOqRwro= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.help:116822 Archived-At: And another very basic question: I can't get `add-function' to do its thing. I want to add a :filter-args function to #'canonically-space-region, and because this is a minor mode, I want it set locally. I've tried everything I can think of, but either get no results (my advice function isn't called) or an error saying that it wants a symbol, but I gave it a lambda. If I give it a symbol, nothing happens. (add-function :filter-args (local 'canonically-space-region) #'my-canonical-space-region) (defun my-canonical-space-region (bounds) ;; etc (list (car bounds) (nth 1 bounds))) What's wrong with this? Thanks, Eric