Sources of the "Well Specified Common Lisp" specification which is based on the final draft of the Common Lisp standard but is not a new Common Lisp standard.
It seems reasonable to have exceptional situations for N not being a non-negative integer,
and for situations where LIST is not a list, or it contains too few elements.
It seems reasonable to have exceptional situations for N not being a non-negative integer, and for situations where LIST is not a list, or it contains too few elements.