+;;; much, much, later (in Feb 2007), CSR noticed that the problem
+;;; still exists for funcallable instances.
+(defclass funcallable-box (box sb-mop:funcallable-standard-object) ()
+ (:metaclass sb-mop:funcallable-standard-class))
+(defun read-funcallable-box (stream char)
+ (declare (ignore char))
+ (let ((objects (read-delimited-list #\} stream t)))
+ (unless (= 1 (length objects))
+ (error "Unknown box reader syntax"))
+ (make-instance 'funcallable-box :value (first objects))))
+(set-macro-character #\{ 'read-funcallable-box)
+(set-syntax-from-char #\} #\))
+(multiple-value-bind (res pos)
+ (read-from-string "#1={#1#}")
+ (assert (eq (value res) res))
+ (assert (= pos 8)))