[OS X TeX] ifthen and regular expressions

[Friedrich Vosberg]

Morning.

Does someone of You know how to get an ifthenelse switch that is TRUE  
if the expansion of the given macro contains a given string. For  
example:

\def\string{court}
\def\pattern{Royal High Court of Westminster}

\ifthenelse{contains{\string}{\pattern}{%
   TRUE
}{%
   FALSE
}

--
»Wir sind Papst!« BILD am 20. April 2005
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