;; Else, fail.
(t nil))))
+(defun whitespace-char-p (x)
+ (and (characterp x)
+ (or (char= x #\space)
+ (char= x (code-char tab-char-code))
+ (char= x (code-char return-char-code))
+ (char= x #\linefeed))))
+
(defun alphanumericp (char)
#!+sb-doc
"Given a character-object argument, alphanumericp returns T if the