In Chicken 4.8.0, procedures defined with #!optional no longer signal an
exception if invoked with too many arguments. For example:
(define (foo x #!optional y) (list x y))
(foo 'x 'y 'too 'many 'args)
In Chicken 4.7, this would signal an exception, because the foo
procedure expects a maximum of 2 arguments. In Chicken 4.8, the extra
arguments are simply ignored.
I think this is a bug, because the docs for "Extended DSSSL style lambda
lists" say:
If there is no rest-parameter and no keyword-parameters in the
> parameter-list, then it shall be an error for any extra arguments to
> be passed to the procedure.
- John
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