(EQ ...) untrue for numbers?

[Rem@IMSSS]

Somebody made the claim that (DEFUN TST (Z) (LET ((X Z) (Y Z)) (EQ X Y)))
could in MacLISP sometimes return NIL if given a numeric argument, but I
forgot who it was. I tried it using PLISP (one-segment full-bibop MacLISP)
at SU-AI under the claimed conditions and was unable to get anything
except T to return. I have a transcript to show that person. Would the
person please identify self?
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