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initforms and implicit blocks

    Date: Thu, 6 Mar 86 17:18:28 EST 
    From: apollo!dfm at uw-beaver.arpa
    Re:   initforms and implicit blocks

    Are initforms in &optional, &key, and &aux parameters evaluated
    inside or outside the implicit block provided by defun and
    friends? ...  At first glance, it seems most tasteful to have them
    evaluated within the implicit block.

What could DEFUN expand into which would place the arguments within
the scope of the block?  The obvious expansion of DEFUN is something
   (setf (symbol-function '<name>) #'(lambda <arglist> (block <name> <body>))