On Aug 5, 2009, at 3:44 PM, Robby Findler wrote:

Also, looking at syn-aux.ss, I see this:

;; Symbol (Symbol X -> X) -> (X -> X)
(define (check-flat-spec tag coerce>)
  (lambda (p)
    (syntax-case p ()
      [(b) #'(coerce> tag b)]
      [_ (err tag p)])))

which seems like it has to be wrong (that's going to always introduce
a free variable, right?). I think it should probably be define-syntax,
but I didn't change it.

This is a left over experiment and can be deleted while you're fixing 2htdp Thanks -- Matthias

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