[texhax] ifthen functionality for plain TeX

[Eduardo M KALINOWSKI]

Alexander Grahn wrote:
> Hi,
>
> is there a way to get the functionalty of the LaTeX package `ifthen' in
> TeX too? I am particularly interested in negating and combining boolean
> expressions using \NOT, \AND, \OR.
>
> It is surprising that TeX doesn't provide this functionality by itself,
> as building complex conditional expressions is quite a common task and
> even the most ancient and most primitive higher programming languages
> provide the means for doing such things.
>   
TeX is not a programming language. :-)  (Though many people have used it
as one.)

-- 
"The four building blocks of the universe are fire, water, gravel and vinyl."
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Eduardo M KALINOWSKI
eduardo at kalinowski.com.br
http://move.to/hpkb