[NTG-context] function that purges 8 bit text?

[Henning Hraban Ramm]

Am 06.01.2005 um 12:56 schrieb Hans Hagen:
>> Is there a possibility to strip all invalid chars from a string, so 
>> that
>> \SkillField{Erzählen}{0} can define a field named "Erzaehlen" or 
>> "Erzhlen" or "Erzahlen"?
>
> just make me s small test file
> there is lots of sanitizing code/trickery out there, but need a simple 
> self contained example

Hm, it doesn't really have anything to do with my application (defining 
widget fields), so...

\starttext

\def\MyIndex#1{\index[\CLEAN{#1}]{#1}}

\MyIndex{Ätsch} % should expand to \index[Atsch]{Ätsch} or 
\index[Aetsch]{Ätsch}

\stoptext


Grüßlis vom Hraban!
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