From: Peter Rolf <indiego@gmx.net>
To: ntg-context@ntg.nl
Subject: Re: metapost question
Date: Fri, 21 Oct 2011 17:13:21 +0200 [thread overview]
Message-ID: <4EA18C11.1040502@gmx.net> (raw)
In-Reply-To: <0E2E620E-1148-41AD-9966-54A594FCCE94@xs4all.nl>
Am 21.10.2011 15:05, schrieb Hans van der Meer:
> I cannot find the answer to the following question in Knuth's Metafont book.
> The following definition with a trailing text argument:
>
> def mydef (expr a, b, c) text modifier =
> if <modifier = empty>:
Have you already tried
if modifier = "" :
> else:
> fi
> enddef;
>
> How can I do the switch on an empty or nonempty modifier argument? It is not a string because calling its length fails with an error.
> I must do the switch, because "fill modifier" with an empty "modifier" gives horrible results.
>
> Usage would be calls like:
> mydef(1,2,3) withcolor green; % with modifier text
> mydef(1,2,3); % without modifier text
>
> Thanks in advance.
> Hans van der Meer
>
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
>
___________________________________________________________________________________
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
___________________________________________________________________________________
next prev parent reply other threads:[~2011-10-21 15:13 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-21 13:05 Hans van der Meer
2011-10-21 15:13 ` Peter Rolf [this message]
2011-10-21 15:34 ` Meer, H. van der
2011-10-21 18:13 ` Meer, H. van der
2011-10-21 18:02 ` Nicola
-- strict thread matches above, loose matches on Subject: below --
2015-12-06 20:54 MetaPost Question Context NTG
2015-12-06 21:49 ` Alan BRASLAU
2015-12-07 15:58 ` Context NTG
2011-12-01 22:25 metapost question Hans van der Meer
2011-12-01 23:30 ` Peter Rolf
2009-05-11 15:14 Metapost question Jean Magnan de Bornier
2009-05-11 15:34 ` Peter Rolf
2009-05-11 16:27 ` Jean Magnan de Bornier
2009-05-11 15:42 ` Mojca Miklavec
2009-05-11 15:58 ` Mojca Miklavec
2009-05-11 16:31 ` Jean Magnan de Bornier
2009-05-11 16:52 ` Mojca Miklavec
2009-05-11 17:33 ` Jean Magnan de Bornier
2009-05-11 18:02 ` Mojca Miklavec
2009-05-12 4:33 ` Jean Magnan de Bornier
2009-05-12 7:42 ` Taco Hoekwater
2009-05-12 14:15 ` Jean Magnan de Bornier
2009-05-12 14:32 ` Aditya Mahajan
2009-05-12 15:11 ` Jean Magnan de Bornier
2009-05-12 15:53 ` Taco Hoekwater
2009-05-12 16:37 ` Jean Magnan de Bornier
2009-05-13 6:45 ` Taco Hoekwater
2009-05-13 8:19 ` Jean Magnan de Bornier
2009-05-11 18:16 ` Jean Magnan de Bornier
2009-05-11 17:01 ` Hans Hagen
2009-05-11 18:08 ` Mojca Miklavec
2009-05-11 15:47 ` Aditya Mahajan
2008-06-18 11:14 metapost question Thomas A. Schmitz
2008-06-18 11:43 ` Wolfgang Schuster
2008-06-18 11:58 ` Peter Rolf
2008-06-18 12:11 ` Thomas A. Schmitz
2007-10-08 13:47 Thomas A. Schmitz
2007-10-08 16:49 ` Otared Kavian
2007-10-08 17:34 ` Thomas A. Schmitz
2007-10-08 18:10 ` Jesse Alama
2007-10-23 12:17 ` Thomas A. Schmitz
2007-10-23 12:26 ` Hans Hagen
2007-10-23 20:58 ` Thomas A. Schmitz
2007-06-28 17:27 MetaPost question Tobias Burnus
2007-06-28 17:48 ` Taco Hoekwater
2007-05-02 20:38 Tobias Burnus
2007-05-02 20:46 ` Aditya Mahajan
2007-05-04 21:18 ` Aditya Mahajan
2005-06-14 6:54 Metapost question Tobias Burnus
2005-06-14 7:42 ` Taco Hoekwater
2005-06-14 10:51 ` h h extern
2005-06-14 7:56 ` Albrecht Kauffmann
2001-11-17 19:54 MetaPost question Jose Luis Diaz
2001-11-18 6:18 ` Johannes H?sing
2001-11-18 11:57 ` Denis B. Roegel
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