[no subject]

[Alias for WGD <BIL at MIT-AI>]

In System 78.35, ZMail 38.5, microcode 840, on Lisp Machine Fifteen:

The following once-only expands incorrectly on (pairp (caar x))

(defmacro pairp (object)
   (once-only (object)
      `(and ,object (listp ,object))))