Received: from mail.proteosys.com ([213.139.130.197]) by nummer-3.proteosys with Microsoft SMTPSVC(6.0.3790.3959); Tue, 23 Dec 2008 23:10:14 +0100 Received: by mail.proteosys.com (8.13.8/8.13.8) with ESMTP id mBNMA95g006643 for ; Tue, 23 Dec 2008 23:10:12 +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 mBNM78jT010381 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 23 Dec 2008 23:07:08 +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 mBN7TBwU017663; Tue, 23 Dec 2008 23:07:08 +0100 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 15.5) with spool id 180667 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Tue, 23 Dec 2008 23:07:00 +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 mBNM70CV030027 for ; Tue, 23 Dec 2008 23:07:00 +0100 Received: from lon1-post-1.mail.demon.net (lon1-post-1.mail.demon.net [195.173.77.148]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id mBNM6lwD001186 for ; Tue, 23 Dec 2008 23:06:50 +0100 Received: from morningstar2.demon.co.uk ([80.176.134.7] helo=[192.168.0.2]) by lon1-post-1.mail.demon.net with esmtp (Exim 4.69) id 1LFFOo-0004f1-YR for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Tue, 23 Dec 2008 22:06:46 +0000 User-Agent: Thunderbird 2.0.0.18 (Windows/20081105) MIME-Version: 1.0 X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Message-ID: <495160FA.8000004@morningstar2.co.uk> Date: Tue, 23 Dec 2008 22:06:50 +0000 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Joseph Wright Subject: \tlist_if_eq:nn To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: X-ProteoSys-SPAM-Score: -2.599 () BAYES_00 X-Scanned-By: MIMEDefang 2.64 on 213.139.130.197 Return-Path: owner-latex-l@LISTSERV.UNI-HEIDELBERG.DE X-OriginalArrivalTime: 23 Dec 2008 22:10:14.0944 (UTC) FILETIME=[3B597200:01C9654B] Status: R X-Status: X-Keywords: X-UID: 5544 Hello, I was reading through part of l3tlp, and I came across: \def_long_test_function:npn{tlist_if_eq:nn}#1#2{ \tlp_set:Nx \l_testa_tlp {\exp_not:n{#1}} \tlp_set:Nx \l_testb_tlp {\exp_not:n{#2}} \if_meaning:NN\l_testa_tlp \l_testb_tlp } Why is this \tlp_set:Nx plus \exp_not:n, rather than just \tlp_set:Nn? I assume I'm missing some complex edge case. -- Joseph Wright