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(define-generic (print-object obj))

(define (default-print-method obj #!optional (out (current-output-port)))
  (let ((class (class-of obj)))
    (if (eq? class #t)
	(display obj out)
	(fprintf out "#<coops instance of `~a'>" (class-name class)))))

(define-method (print-object (obj #t) #!optional (out (current-output-port)))
  (default-print-method obj out))

(define-method (print-object (class <standard-class>) #!optional (out (current-output-port)))
  (fprintf out "#<coops standard-class `~a'>" (class-name class)))

(define-record-printer (coops-instance obj out)
  (handle-exceptions ex
      (begin
	(display "#<no print-method defined for: " out)
	(default-print-method obj out)
	(display ">" out))
    (print-object obj out) ) )