From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Change in files.el Date: Tue, 31 Jan 2017 09:46:19 -0500 Message-ID: References: <83mvebzh0k.fsf@gnu.org> <83bmurz0y9.fsf@gnu.org> <8360kzyxor.fsf@gnu.org> <83ziibxg7j.fsf@gnu.org> <83y3xvxfbs.fsf@gnu.org> <83wpdfxe96.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1485878168 26717 195.159.176.226 (31 Jan 2017 15:56:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 31 Jan 2017 15:56:08 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jan 31 16:56:01 2017 Return-path: Envelope-to: ged-emacs-devel@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 1cYaml-0006Zv-UJ for ged-emacs-devel@m.gmane.org; Tue, 31 Jan 2017 16:56:00 +0100 Original-Received: from localhost ([::1]:39152 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cYamr-0008WC-53 for ged-emacs-devel@m.gmane.org; Tue, 31 Jan 2017 10:56:05 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36064) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cYabC-0007yJ-IN for emacs-devel@gnu.org; Tue, 31 Jan 2017 10:44:08 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cYab9-0007yH-T1 for emacs-devel@gnu.org; Tue, 31 Jan 2017 10:44:02 -0500 Original-Received: from [195.159.176.226] (port=43281 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cYab9-0007xS-Mt for emacs-devel@gnu.org; Tue, 31 Jan 2017 10:43:59 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cYZkx-0001J5-6P for emacs-devel@gnu.org; Tue, 31 Jan 2017 15:50:03 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 9 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:TO3rNEiWAXqCkPRrvbElKWM1bTk= 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: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:211801 Archived-At: > Can add-function infer that a -function variable with a value of "nil" is > equivalent to it having a value of 'ignore? As Leo pointed out, in 99% of the cases, nil is not equivalent to `ignore' in those variables. And if it were, then what would be the benefit to use nil instead of using `ignore' as the default value? Stefan