other comparison-function than eql possible for `case'?

[Klaus Berndl]

`case' compares against the key-clauses with `eql'. My question: Exist a
similar construct which allows comparison with `equal' for example? This would
be useful to write case-statement with strings as keys...

Thanks for any pointer!
Klaus

-- 
Klaus Berndl                    mailto: klaus.berndl@sdm.de
sd&m AG                         http://www.sdm.de
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