(intersect-directory (one two)
(aver (typep one '(or null (member :wild :unspecific) list)))
(aver (typep two '(or null (member :wild :unspecific) list)))
(intersect-directory (one two)
(aver (typep one '(or null (member :wild :unspecific) list)))
(aver (typep two '(or null (member :wild :unspecific) list)))