nested define syntax

[Dirk Herrmann]

Hello,

currently, guile allows the following:

guile> (define (((foo a b) c) d) #f)
guile> foo
#<procedure foo (a b)>
guile> (procedure-source foo)
(lambda (a b) (lambda (c) (lambda (d) #f)))

This is non-R5RS conformant, and I wonder if anybody uses this style of
declaration?  Shouldn't we rather remove it?

Best regards
Dirk Herrmann