From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: Calling Ediff which ignores whitespaces from VC Dir Date: Thu, 01 Aug 2013 11:37:21 -0400 Message-ID: References: <8661vph4dl.fsf@somewhere.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1375371490 30200 80.91.229.3 (1 Aug 2013 15:38:10 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 1 Aug 2013 15:38:10 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Aug 01 17:38:12 2013 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 1V4ux8-0006im-SI for geh-help-gnu-emacs@m.gmane.org; Thu, 01 Aug 2013 17:38:10 +0200 Original-Received: from localhost ([::1]:60131 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V4ux8-00017o-HR for geh-help-gnu-emacs@m.gmane.org; Thu, 01 Aug 2013 11:38:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45843) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V4uwl-00010z-TF for help-gnu-emacs@gnu.org; Thu, 01 Aug 2013 11:37:57 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V4uwe-0004rJ-Gy for help-gnu-emacs@gnu.org; Thu, 01 Aug 2013 11:37:47 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:37395) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V4uwe-0004rC-8d for help-gnu-emacs@gnu.org; Thu, 01 Aug 2013 11:37:40 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1V4uwY-0005LP-5i for help-gnu-emacs@gnu.org; Thu, 01 Aug 2013 17:37:34 +0200 Original-Received: from 184.175.13.230 ([184.175.13.230]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 01 Aug 2013 17:37:34 +0200 Original-Received: from monnier by 184.175.13.230 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 01 Aug 2013 17:37:34 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 28 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 184.175.13.230 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Cancel-Lock: sha1:R/XO/rRmxPqmkQU7dUyTiaLr7Nk= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 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:92629 Archived-At: > Debugger entered--Lisp error: (wrong-number-of-arguments (1 . 2) 0) 0 is the number of args you have provided. (1 . 2) is the min and max number of args expected by the function. > With no certainty, I've tried to copy the parameters of `vc-ediff': > --8<---------------cut here---------------start------------->8--- > (defun vc-ediff-ignore-whitespace (historic &optional not-urgent) > "Ignore regions that differ in white space & line breaks only." > (interactive (list current-prefix-arg t)) > (let ((ediff-ignore-similar-regions t)) > (vc-ediff historic not-urgent))) You could also use (call-interactively 'vc-ediff) instead. > call-interactively: Symbol's value as variable is void: > ediff-ignore-similar-regions That's because ediff was (auto)loaded while ediff-ignore-similar-regions was let-bound. So at the end of the let, ediff-ignore-similar-regions was reset to its previous value (i.e. unbound). That's a long standing problem. To work around such issues, you want to explicitly load ediff before doing the let. Stefan