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 p4G6CF8l008177 for ; Mon, 16 May 2011 08:12:16 +0200 Received: (qmail 1793 invoked by alias); 16 May 2011 06:12:10 -0000 Delivered-To: GMX delivery to rainer.schoepf@gmx.net Received: (qmail invoked by alias); 16 May 2011 06:12:09 -0000 Received: from relay2.uni-heidelberg.de (EHLO relay2.uni-heidelberg.de) [129.206.210.211] by mx0.gmx.net (mx007) with SMTP; 16 May 2011 08:12:09 +0200 Received: from listserv.uni-heidelberg.de (listserv.uni-heidelberg.de [129.206.100.94]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p4G6A6LA024819 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 16 May 2011 08:10:07 +0200 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 p4FM1H7O004064; Mon, 16 May 2011 08:10:06 +0200 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 16.0) with spool id 1208758 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Mon, 16 May 2011 08:10:06 +0200 Received: from relay.uni-heidelberg.de (relay.uni-heidelberg.de [129.206.100.212]) by listserv.uni-heidelberg.de (8.13.1/8.13.1) with ESMTP id p4G6A6Rw007785 for ; Mon, 16 May 2011 08:10:06 +0200 Received: from anchor-post-3.mail.demon.net (anchor-post-3.mail.demon.net [195.173.77.134]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p4G69tIY002825 for ; Mon, 16 May 2011 08:09:58 +0200 Received: from cremornelane.demon.co.uk ([80.177.25.195] helo=palladium.local) by anchor-post-3.mail.demon.net with esmtp (Exim 4.69) id 1QLr07-0004q7-ms; Mon, 16 May 2011 06:09:55 +0000 User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-GB; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 MIME-Version: 1.0 References: <4DCA93CC.5020605@morningstar2.co.uk> <19920.15087.714131.100464@morse.mittelbach-online.de> <447088.31292.qm@web24704.mail.ird.yahoo.com> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Message-ID: <4DD0BFB3.7070007@morningstar2.co.uk> Date: Mon, 16 May 2011 07:09:55 +0100 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Joseph Wright Subject: Re: xparse and space skipping To: LATEX-L@listserv.uni-heidelberg.de In-Reply-To: Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: X-GMX-Antispam: 0 (eXpurgate); Detail=5D7Q89H36p4yCuwxJv6KY0FCZRnwZ+13oc2xMl0VJsxnw3p5jdtavUPZqGsZQCZvlo6Nj 0nzibDOpLkBhZby/hO1Gs/pnroRqDdO5WG4l5uO1kTGRlCAIm7ja+cSEucPO72/CHlJXSnmFGnha tk5EkP3ihQupP+cw5Mn3Oxmpj5jOT2f2r7VjwqpZGle5eY0GDGL5VCw56vfWHflbdFAiQ==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: 6752 On 15/05/2011 22:35, Bruno Le Floch wrote: > Proposal: to ban trailing optional arguments entirely. At a pure LaTeX3 level, I think we may move in that direction to some extent (although I think \item[...] is a good example where there is simple alternative). Frank has pointed out that at this stage we want to keep the user syntax for LaTeX3 'open', but I always point out that 'something like LaTeX2e but more organised' is a likelihood. To me, that means \foo[...]{...} is a possible, but I'd hope not \foo{...}[...] (i.e. I'm in favour a a single optional argument, which should come first, at least as a standard approach.) -- Joseph Wright