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Re: [Masinter.pa: Re: questions]

I think that our working assumption has always been that, if no return
value is mentioned, NIL is returned as a single value unless there's
something obvious that has to come back as in MAKE-ARRAY.  Returning no
values is more expensive than returning NIL and discarding it in many
implementations, since the single-return case usually is special-cased for
maximum speed.

-- Scott