Received: from mx0.gmx.net (mx0.gmx.net [213.165.64.100]) by h1439878.stratoserver.net (8.14.2/8.14.2/Debian-2build1) with SMTP id p046i71c013607 for ; Tue, 4 Jan 2011 07:44:10 +0100 Received: (qmail 13066 invoked by alias); 4 Jan 2011 06:44:02 -0000 Delivered-To: GMX delivery to rainer.schoepf@gmx.net Received: (qmail invoked by alias); 04 Jan 2011 06:44:02 -0000 Received: from relay.uni-heidelberg.de (EHLO relay.uni-heidelberg.de) [129.206.100.212] by mx0.gmx.net (mx044) with SMTP; 04 Jan 2011 07:44:02 +0100 Received: from listserv.uni-heidelberg.de (listserv.uni-heidelberg.de [129.206.100.94]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p046ftwn002577 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 4 Jan 2011 07:41:55 +0100 Received: from listserv.uni-heidelberg.de (localhost.localdomain [127.0.0.1]) by listserv.uni-heidelberg.de (8.13.1/8.13.1) with ESMTP id p03N13ir001020; Tue, 4 Jan 2011 07:41:46 +0100 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 16.0) with spool id 770561 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Tue, 4 Jan 2011 07:41:46 +0100 Received: from relay2.uni-heidelberg.de (relay2.uni-heidelberg.de [129.206.210.211]) by listserv.uni-heidelberg.de (8.13.1/8.13.1) with ESMTP id p046fk6r002581 for ; Tue, 4 Jan 2011 07:41:46 +0100 Received: from mail-iy0-f177.google.com (mail-iy0-f177.google.com [209.85.210.177]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p046ffEQ012803 for ; Tue, 4 Jan 2011 07:41:45 +0100 Received: by iyj21 with SMTP id 21so15756625iyj.22 for ; Mon, 03 Jan 2011 22:41:41 -0800 (PST) Received: by 10.42.229.196 with SMTP id jj4mr21960683icb.316.1294123300926; Mon, 03 Jan 2011 22:41:40 -0800 (PST) Received: from staff-250-102.wireless.adelaide.edu.au (staff-250-102.wireless.adelaide.edu.au [129.127.250.102]) by mx.google.com with ESMTPS id i2sm18338858icv.15.2011.01.03.22.41.38 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 03 Jan 2011 22:41:39 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1081) References: <4D22486F.5000506@morningstar2.co.uk> X-Mailer: Apple Mail (2.1081) X-Spam-Whitelist: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by listserv.uni-heidelberg.de id p046fk6r002582 Message-ID: <7C89B4BA-13CE-4976-ADB9-1C08CE25475E@gmail.com> Date: Tue, 4 Jan 2011 17:11:34 +1030 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Will Robertson Subject: Re: \box_if_empty:N(TF) To: LATEX-L@listserv.uni-heidelberg.de In-Reply-To: <4D22486F.5000506@morningstar2.co.uk> Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: X-GMX-Antispam: 0 (Mail was not recognized as spam); Detail=5D7Q89H36p4U4jfdfC5HDevlx1X2sAZgP9e9F2VTUYI/FLDAh5vXTVin+wznIYULO4W8f iu4UIHVeutAdNYNyhIIRpjhB4NMqCt7OvFNAZ1Wfx4FZJc627ijqKNPBMry42D3C0vBPyK5et6Ko fYsJQ==V1; X-Resent-By: Forwarder X-Resent-For: rainer.schoepf@gmx.net X-Resent-To: rainer@rainer-schoepf.de Status: R X-Status: X-Keywords: X-UID: 6517 On 04/01/2011, at 8:36 AM, Joseph Wright wrote: > Working on the galley (see the latest SVN checkin), I find that \box_if_empty:NTF is misleading. The test is for a void box, not an empty one: > > \box_new:N \l_my_box > \hbox_set:Nn \l_my_box {} > \box_if_empty:NTF \l_my_box { NOPE } { OOPS } > > I think it should be \box_if_void:NTF - any objections? Not at all. Is there a need to have an actual empty test? Oh wait, this isn't possible, right? -- Will