Received: from mail.proteosys.com ([213.139.130.197]) by nummer-3.proteosys with Microsoft SMTPSVC(6.0.3790.3959); Thu, 13 Aug 2009 08:23:48 +0200 Received: by mail.proteosys.com (8.14.3/8.14.3) with ESMTP id n7D6NlT7028259 for ; Thu, 13 Aug 2009 08:23:47 +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 n7D6HDLd014834 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 13 Aug 2009 08:17:14 +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 n7CM1PMt012738; Thu, 13 Aug 2009 08:17:08 +0200 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 15.5) with spool id 285183 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Thu, 13 Aug 2009 08:17:08 +0200 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 n7D6H8it018029 for ; Thu, 13 Aug 2009 08:17:08 +0200 Received: from rv-out-0708.google.com (rv-out-0708.google.com [209.85.198.248]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id n7D6H2Bq014756 for ; Thu, 13 Aug 2009 08:17:06 +0200 Received: by rv-out-0708.google.com with SMTP id c5so150326rvf.10 for ; Wed, 12 Aug 2009 23:17:02 -0700 (PDT) Received: by 10.141.33.16 with SMTP id l16mr405775rvj.109.1250144222591; Wed, 12 Aug 2009 23:17:02 -0700 (PDT) Received: from ?129.127.15.244? ([129.127.15.244]) by mx.google.com with ESMTPS id k2sm39278218rvb.47.2009.08.12.23.16.59 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 12 Aug 2009 23:17:01 -0700 (PDT) Content-Type: multipart/signed; boundary=Apple-Mail-1--893405777; micalg=sha1; protocol="application/pkcs7-signature" Mime-Version: 1.0 (Apple Message framework v935.3) References: <4A7921CF.5020803@morningstar2.co.uk> <4A7A1505.4040604@residenset.net> <4A7AD930.2090106@residenset.net> <8516B615-51AA-4D90-BB7D-A9E122AA0335@gmail.com> <4A804317.6050909@morningstar2.co.uk> <4A80508F.3030904@elzevir.fr> <4A81C3D2.9040607@residenset.net> <4A826F15.8050606@morningstar2.co.uk> <4A83A103.7020507@morningstar2.co.uk> X-Mailer: Apple Mail (2.935.3) X-Spam-Whitelist: Message-ID: <464C43D2-9841-45F6-9CEF-130C98A7CC86@gmail.com> Date: Thu, 13 Aug 2009 15:46:57 +0930 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Will Robertson Subject: Re: xparse To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE In-Reply-To: <4A83A103.7020507@morningstar2.co.uk> Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: X-ProteoSys-SPAM-Score: -6.599 () BAYES_00,RCVD_IN_DNSWL_MED X-Scanned-By: MIMEDefang 2.65 on 213.139.130.197 Return-Path: owner-latex-l@LISTSERV.UNI-HEIDELBERG.DE X-OriginalArrivalTime: 13 Aug 2009 06:23:48.0177 (UTC) FILETIME=[9E0C3410:01CA1BDE] Status: R X-Status: X-Keywords: X-UID: 5921 --Apple-Mail-1--893405777 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Hi, On 13/08/2009, at 2:43 PM, Joseph Wright wrote: > Are we approaching a consensus on this (if not what everyone considers > ideal, at least on something most of us can live with)? Seems great to me. I think it strikes a good balance. I'll be interested in hearing Morten's and Frank's views (although I understand they might not get the opportunity). * * * As far as the definition of the processors is concerned, I think I prefer using a pre-determined toks variable rather than a more abstract "#1". That is, to write { >{\my_sanitise:n} m } \cs_set:Nn \my_sanitise:n { \toks_set:Nn \l_xparse_arg_toks { } } rather than { >{\my_sanitise:Nn} m } \cs_set:Nn \my_sanitise:Nn { \toks_set:Nn #1 { } } It looks better, to me, that processor functions have a single-letter signature in their simplest form. (It seems pretty clear that we should be using functions with expl3 names here?) * * * Also, I think this is about as simple as we can get. We could theoretically have a function like \xparse_return_arg:n { } instead of the \toks_set:Nn, but this would still require scratch variables to manipulate #1 in the first place. So no gain. 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