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From: Peter Rolf <peter.rolf@arcor.de>
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Subject: variables
Date: Tue, 15 Jul 2003 14:59:44 +0200
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I want to test, if a given variable is empty or not. I tried the following,
but the test is always false. Is this a bug or a feature ;)
Any help is welcome.


\starttext

\setvariables[test]
  [first=,
   second=something,]

\def\TestVAR#1{\getvariable{test}{#1}}

\if\TestVAR{first}\empty %
  The variable test:first is empty.\else
  The variable test:first contains \TestVAR{first}.\fi

\if\TestVAR{second}\empty %
  The variable test:second is empty.\else
  The variable test:second contains \TestVAR{second}.\fi

\stoptext


Regards,

   Peter