From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.bugs Subject: bug#20241: 25.0.50; `setq' with only one argument Date: Tue, 24 Nov 2015 11:32:24 +0000 Message-ID: <20151124113224.GA2031@acm.fritz.box> References: <16400d25-dff1-4bfb-b929-814714f9e20f@default> <20151123143112.83911.qmail@mail.muc.de> <62twoc5zdo.fsf@fencepost.gnu.org> <20151123193138.GG2004@acm.fritz.box> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1448364687 6633 80.91.229.3 (24 Nov 2015 11:31:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 24 Nov 2015 11:31:27 +0000 (UTC) Cc: 20241@debbugs.gnu.org To: Glenn Morris Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Nov 24 12:31:15 2015 Return-path: Envelope-to: geb-bug-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 1a1BoT-0000ju-EY for geb-bug-gnu-emacs@m.gmane.org; Tue, 24 Nov 2015 12:31:09 +0100 Original-Received: from localhost ([::1]:37813 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1BoU-0003bm-AB for geb-bug-gnu-emacs@m.gmane.org; Tue, 24 Nov 2015 06:31:10 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:51770) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1BoQ-0003Ys-T8 for bug-gnu-emacs@gnu.org; Tue, 24 Nov 2015 06:31:07 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a1BoM-00066W-Vw for bug-gnu-emacs@gnu.org; Tue, 24 Nov 2015 06:31:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:60626) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a1BoM-00066S-SK for bug-gnu-emacs@gnu.org; Tue, 24 Nov 2015 06:31:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1a1BoM-0000zu-LZ for bug-gnu-emacs@gnu.org; Tue, 24 Nov 2015 06:31:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Alan Mackenzie Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 24 Nov 2015 11:31:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20241 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 20241-submit@debbugs.gnu.org id=B20241.14483646473813 (code B ref 20241); Tue, 24 Nov 2015 11:31:02 +0000 Original-Received: (at 20241) by debbugs.gnu.org; 24 Nov 2015 11:30:47 +0000 Original-Received: from localhost ([127.0.0.1]:50334 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1a1Bo6-0000zQ-87 for submit@debbugs.gnu.org; Tue, 24 Nov 2015 06:30:46 -0500 Original-Received: from mail.muc.de ([193.149.48.3]:40257) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1a1Bni-0000yu-8v for 20241@debbugs.gnu.org; Tue, 24 Nov 2015 06:30:41 -0500 Original-Received: (qmail 2171 invoked by uid 3782); 24 Nov 2015 11:30:20 -0000 Original-Received: from acm.muc.de (p5B146A6A.dip0.t-ipconnect.de [91.20.106.106]) by colin.muc.de (tmda-ofmipd) with ESMTP; Tue, 24 Nov 2015 12:30:20 +0100 Original-Received: (qmail 2049 invoked by uid 1000); 24 Nov 2015 11:32:24 -0000 Content-Disposition: inline In-Reply-To: <20151123193138.GG2004@acm.fritz.box> User-Agent: Mutt/1.5.23 (2014-03-12) X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:109177 Archived-At: Hello, Glenn. On Mon, Nov 23, 2015 at 07:31:38PM +0000, Alan Mackenzie wrote: > On Mon, Nov 23, 2015 at 01:44:51PM -0500, Glenn Morris wrote: > > Alan Mackenzie wrote: > > >> setq' should not be called with only one argument. It "works", with the > > >> effect of assigning a value of nil, but it is poor form. Typically this > > >> is a sign of a typo. > > > > > > Fixed in emacs-25. The interpreter now signals a wrong-number-of-args > > > error, and the byte compiler issues a warning. > > What on earth is this incompatible change doing in a feature-frozen > > release branch? > It's a bug fix. > > Also, the combination of a compiler _warning_ and a run-time _error_ > > makes no sense. > Maybe, maybe not. It's not the byte compiler's habit to signal errors: > it only does so in most exceptional circumstances. Possibly the > thinking is that it's best to produce a .elc anyway, which can be > inspected, rather than just to error out. Apologies for the above: the byte compiler does indeed routinely signal errors as errors. I will change this "odd number of arguments" warning into an error. -- Alan Mackenzie (Nuremberg, Germany).