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 p9QKgt8Q026197 for ; Wed, 26 Oct 2011 22:42:56 +0200 Received: (qmail 28442 invoked by alias); 26 Oct 2011 20:42:50 -0000 Delivered-To: GMX delivery to rainer.schoepf@gmx.net Received: (qmail invoked by alias); 26 Oct 2011 20:42:50 -0000 Received: from relay.uni-heidelberg.de (EHLO relay.uni-heidelberg.de) [129.206.100.212] by mx0.gmx.net (mx115) with SMTP; 26 Oct 2011 22:42:50 +0200 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 p9QKdlqr027664 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 26 Oct 2011 22:39:47 +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 p9QIcaZc030285; Wed, 26 Oct 2011 22:39:47 +0200 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 16.0) with spool id 1931458 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Wed, 26 Oct 2011 22:39:47 +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 p9QKdkeW018535 for ; Wed, 26 Oct 2011 22:39:46 +0200 Received: from lon1-post-1.mail.demon.net (lon1-post-1.mail.demon.net [195.173.77.148]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p9QKdXox027614 for ; Wed, 26 Oct 2011 22:39:37 +0200 Received: from cremornelane.demon.co.uk ([80.177.25.195] helo=palladium.local) by lon1-post-1.mail.demon.net with esmtp (Exim 4.69) id 1RJAG5-0001Ji-Wo for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Wed, 26 Oct 2011 20:39:33 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 MIME-Version: 1.0 References: <4EA7DB88.7020906@residenset.net> <4EA86A04.1030408@residenset.net> X-Enigmail-Version: 1.3.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <4EA87004.8070100@morningstar2.co.uk> Date: Wed, 26 Oct 2011 21:39:32 +0100 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Joseph Wright Subject: Re: S combinator and such To: LATEX-L@listserv.uni-heidelberg.de In-Reply-To: <4EA86A04.1030408@residenset.net> Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: X-GMX-Antispam: 0 (Sender is in whitelist: joseph.wright@MORNINGSTAR2.CO.UK); Detail=5D7Q89H36p4L00VTXC6D4q0N+AH0PUCnBi0P5cROEGjO+pG7NAH/K+tf9SrVFtpLrKONl 2T9EL4W4U4jgzLbnCcGpk1z/zwmKT/K1fv3lD0=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: 6958 On 26/10/2011 21:13, Lars Hellström wrote: >> I'd argue, though, that it is useless. If you want named parameters, >> key-value input is much more powerful. > > A lot of the time: yes; and I can certainly live with numbered > parameters. It does however become a bit awkward when you add another > optional argument to an xparse-defined command that already has a lot of > arguments, since you will then find yourself having to renumber most #n > in the replacement text. Trivially doable, but something of a > maintenance problem. Hence the general feeling that we should probably not use too many optional arguments, in the main \foo[{mandatory}... -- Joseph Wright