From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/53065 Path: news.gmane.org!not-for-mail From: Aditya Mahajan Newsgroups: gmane.comp.tex.context Subject: Re: vardef with @# not working within context Date: Mon, 21 Sep 2009 08:20:36 -0400 (EDT) Message-ID: References: <20090921115602.GT8930@katherina.student.utwente.nl> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1253535718 26413 80.91.229.12 (21 Sep 2009 12:21:58 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 21 Sep 2009 12:21:58 +0000 (UTC) To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Mon Sep 21 14:21:50 2009 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([195.12.62.10]) by lo.gmane.org with esmtp (Exim 4.50) id 1MphtF-0003SJ-3U for gctc-ntg-context-518@m.gmane.org; Mon, 21 Sep 2009 14:21:09 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 2861BC9B07; Mon, 21 Sep 2009 14:21:06 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id uKsw95nZONXR; Mon, 21 Sep 2009 14:21:01 +0200 (CEST) Original-Received: from balder.ntg.nl (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 1ADBFC9AC1; Mon, 21 Sep 2009 14:21:01 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 78E01C9AC1 for ; Mon, 21 Sep 2009 14:20:58 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id DKoFXqAhd8Oz for ; Mon, 21 Sep 2009 14:20:53 +0200 (CEST) Original-Received: from hellskitchen.mr.itd.umich.edu (smtp.mail.umich.edu [141.211.14.82]) by balder.ntg.nl (Postfix) with ESMTP id DB7E8C9AAF for ; Mon, 21 Sep 2009 14:20:52 +0200 (CEST) Original-Received: FROM [192.168.2.8] (c-76-28-91-31.hsd1.ct.comcast.net [76.28.91.31]) By hellskitchen.mr.itd.umich.edu ID 4AB76FA2.7A535.10494 ; Authuser adityam; 21 Sep 2009 08:20:50 EDT In-Reply-To: <20090921115602.GT8930@katherina.student.utwente.nl> User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.12 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:53065 Archived-At: On Mon, 21 Sep 2009, Matthijs Kooijman wrote: > Hi all, > > I've been fiddling around with metaobj a bit, but defining my own objects > failed. After some debugging, I've reduced this to a metapost / context MkIV > issue (so no metaobj specifics anymore). > > What happens, is that vardefs that use @# as a placeholder in their name only > work when they are defined in an external .mp file. When I define them inside > context (\startMPcode or \startMPinclusions), I get funny errors (mostly > "Isolated expression", which seems to mean that the macro is not defined). > > I suspect this is because the way context extracts metapost code. Is this a > fundamental problem, or could it be fixed? You need to escape # inside any \startMPwhatever...\stopMPwhatever. This has to do with the fact that TeX processes the contents before they are passed to metapost, and TeX does not like isolated #. Try replacing # with \# or \string# Hans, does it make sense to parse all MP environments (ironically except \startMPenvironment, but that is almost redundant in MKIV) with a separate catcode regime where # has catcode other. After all, it is highly unlikely that anyone will define a TeX maco inside \startMPcode or \startMPinclusions. Aditya ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________