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Order of evaluation in PUSH

To: labrea!common-lisp@sail.arpa
Subject: Order of evaluation in PUSH
From: ibuki!weaver@labrea.stanford.edu (Eric Weaver)
Date: Wed, 20 May 87 17:19:21 pdt

    Date: Wed, 20 May 87 13:57:56 -0700
    From: labrea!peck@Sun.COM

     In the form: (push (ref1) (car (ref2)))
    It is unclear whether (ref1) should be evaluated before (ref2). 
    ....

    Lucid and Franz evaluate (ref2) then (ref1)
    Symbolics evaluate (ref1) then (ref2)

KCL falls in the former group:

(macroexpand '(push (ref1) (car (ref2))))   =>

(LET* ((#:G7 (REF2)) (#:G8 (CONS (REF1) (CAR #:G7))))
  (PROGN (RPLACA #:G7 #:G8) #:G8))

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