From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/71925 Path: news.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: How do I test for empty labeltext? Date: Mon, 24 Oct 2011 20:41:11 +0200 Message-ID: <4EA5B147.3060805@wxs.nl> References: 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: dough.gmane.org 1319481695 16291 80.91.229.12 (24 Oct 2011 18:41:35 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 24 Oct 2011 18:41:35 +0000 (UTC) Cc: Mojca Miklavec To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Mon Oct 24 20:41:30 2011 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 4.69) (envelope-from ) id 1RIPSk-0003k5-CC for gctc-ntg-context-518@m.gmane.org; Mon, 24 Oct 2011 20:41:30 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 6DDB0CB082; Mon, 24 Oct 2011 20:41:28 +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 3PgIO5zH6mbG; Mon, 24 Oct 2011 20:41:25 +0200 (CEST) Original-Received: from balder.ntg.nl (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id BECA3CB061; Mon, 24 Oct 2011 20:41:25 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 1A070CB061 for ; Mon, 24 Oct 2011 20:41:24 +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 oAJx-iglgf6C for ; Mon, 24 Oct 2011 20:41:22 +0200 (CEST) Original-Received: from filter4-nij.mf.surf.net (filter4-nij.mf.surf.net [195.169.124.155]) by balder.ntg.nl (Postfix) with ESMTP id 33C93CB04C for ; Mon, 24 Oct 2011 20:41:22 +0200 (CEST) Original-Received: from smtp.ziggozakelijk.nl (D57D1DA2.static.ziggozakelijk.nl [213.125.29.162]) by filter4-nij.mf.surf.net (8.14.3/8.14.3/Debian-5+lenny1) with ESMTP id p9OIfKLb028339 for ; Mon, 24 Oct 2011 20:41:21 +0200 X-Default-Received-SPF: pass (skip=loggedin (res=PASS)) x-ip-name=10.100.1.101; Original-Received: from [10.100.1.101] (unverified [10.100.1.101]) by pragma-net.nl (SurgeMail 5.3h2) with ESMTP (TLS) id 1470-1713362 for multiple; Mon, 24 Oct 2011 20:41:18 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1 In-Reply-To: X-Authenticated-User: hagen@controller-9 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=213.125.29.162; country=NL; region=11; city=Den Haag; latitude=52.0833; longitude=4.3000; http://maps.google.com/maps?q=52.0833,4.3000&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 04FMGFlJI - 595e0d8046cf - 20111024 X-Scanned-By: CanIt (www . roaringpenguin . com) on 195.169.124.155 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:71925 Archived-At: On 24-10-2011 19:41, Mojca Miklavec wrote: > Hello, > > The following code > > \setuplabeltext[test=] > test is \doifemptyelse{\labeltext{test}}{empty}{not empty} > > doesn't work as intended for the reasons that I approximately > understand (not exactly, but I understand that there might be a lot of > weird stuff returned when I ask for labeltext). However I have no idea > how to check if text is empty or not. > > As an exception :) :) :), MKIV hints should be highly appreciated and > enough for this particular application. an empty test is always somewhat special as there can be an unexpandable macro inside that eventually expands to nothing you can try \doiftextelse instead ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ 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 : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________