I've been playing around with Black Hole recently (which is quite nice, by the way), and noticed the following issue.

Importing a file that contains :

(define (f x #!key (y x)) (+ x y)) (display (f 3))

Causes this error :

(import foo)

*** ERROR IN ##main -- (Argument 2) NUMBER expected (+ 3 #!unbound)

y is unbound, while it should have the same value as x.

Since there seems to be a problem with both of Black Hole's git repositories at the moment, I have not tested this with the latest version. If this has already been solved, sorry.

Vincent