[Chicken-users] invalid-procedure-call-handler again

[Sunnan]

So, I'm playing with invalid-procedure-call-handler, with the intention 
of doing string-deconstruction/matching on the invalid procedure (I'm 
dreaming of cadadar, ahahahaha!).

But I can't even print out the proc, let alone do any operations on it. 
What data type does undefined procedures belong to?

(invalid-procedure-call-handler
      (lambda (proc args)
    (print "nice try " proc)))

works fine if I go:

('cadadar list-of-lists)
-> nice try cadadar

but errors if I omit the '.