In-reply-to: David A. Moon <Moon@SCRC-STONY-BROOK.ARPA>'s message of Mon, 5 May 86 20:04 EDT
I thought the obvious defmacro was:
(defmacro foo-p (x) `(and (listp ,x) (eq (car ,x) ',unique-id))))
which is the lexically binding of unique-id I had in mind. I will try
not to be so terse next time.