both-case-p
(both-case-p character)
Returns true if the character is a cased letter (it has both an upper- and a lowercase form): lower-case-p or upper-case-p. A non-character signals a type-error naming the operator.
(both-case-p character)
Returns true if the character is a cased letter (it has both an upper- and a lowercase form): lower-case-p or upper-case-p. A non-character signals a type-error naming the operator.