From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#20625: 25.0.50; doc of `define-error` is incorrect Date: Sat, 23 May 2015 13:17:14 +0300 Message-ID: <83382n38et.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1432376306 22641 80.91.229.3 (23 May 2015 10:18:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 23 May 2015 10:18:26 +0000 (UTC) Cc: 20625@debbugs.gnu.org To: Drew Adams Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat May 23 12:18:15 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 1Yw6VS-0006b4-AY for geb-bug-gnu-emacs@m.gmane.org; Sat, 23 May 2015 12:18:14 +0200 Original-Received: from localhost ([::1]:37242 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yw6VR-0005gq-Ig for geb-bug-gnu-emacs@m.gmane.org; Sat, 23 May 2015 06:18:13 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44187) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yw6VL-0005gW-2F for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 06:18:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Yw6VH-0001uj-6n for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 06:18:06 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:43472) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yw6VH-0001ue-3O for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 06:18:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Yw6VG-00048c-Fy for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 06:18:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 23 May 2015 10:18:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20625 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 20625-submit@debbugs.gnu.org id=B20625.143237625015864 (code B ref 20625); Sat, 23 May 2015 10:18:02 +0000 Original-Received: (at 20625) by debbugs.gnu.org; 23 May 2015 10:17:30 +0000 Original-Received: from localhost ([127.0.0.1]:53447 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Yw6Uf-00047k-Sf for submit@debbugs.gnu.org; Sat, 23 May 2015 06:17:29 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:58721) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Yw6Ua-00047Q-FF for 20625@debbugs.gnu.org; Sat, 23 May 2015 06:17:24 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0NOS00D00S3PKM00@a-mtaout20.012.net.il> for 20625@debbugs.gnu.org; Sat, 23 May 2015 13:17:13 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NOS00D0SSKPHW30@a-mtaout20.012.net.il>; Sat, 23 May 2015 13:17:13 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il 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: 140.186.70.43 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:103090 Archived-At: > Date: Thu, 21 May 2015 14:04:31 -0700 (PDT) > From: Drew Adams > > >From `C-h f': > > (define-error NAME MESSAGE &optional PARENT) > > Define NAME as a new error signal. > MESSAGE is a string that will be output to the echo area if such an error > is signaled without being caught by a `condition-case'. > PARENT is either a signal or a list of signals from which it inherits. > Defaults to `error'. > > No, MESSAGE is not necessarily a string. It is a required argument, but > the code explicitly makes use of the case where it is nil. And existing > code delivered with Emacs (e.g. bookmark.el) makes use of a nil MESSAGE. > That case should be documented. AFAICS, users of this property will yield strange messages if MESSAGE is nil. So shouldn't we at least advise that it's a string? Also, what exactly is the purpose of bookmark.el's using nil there?