MOP says that when ensure-generic-function-using-class is called with
a generic function, it just calls reinitialize-instance with
the supplied initargs.
http://www.alu.org/mop/dictionary.html#ensure-generic-function-using-class
Fixes #283.
(when (getf (method-plist m) :method-from-defgeneric-p)
(remove-method gfun m))))
(if (eq (class-of gfun) generic-function-class)
- (apply #'reinitialize-instance gfun :name name args)
- (apply #'change-class gfun generic-function-class :name name args)))
+ (apply #'reinitialize-instance gfun args)
+ (apply #'change-class gfun generic-function-class args)))
(defmethod ensure-generic-function-using-class
((gfun null) name &rest args &key