lispdoc - results for graphic-char-p

(graphic-char-p char)
Function: The argument must be a character object. GRAPHIC-CHAR-P returns T if the argument is a printing character (space through ~ in ASCII), otherwise returns NIL.
(defun constituent (c)
  (and (graphic-char-p c) (not (char= c #\ ))))
Mentioned in:
CLtL2 - 13. Characters
CLtL2 - 13.2. Predicates on Characters
CLtL2 - 13.4. Character Conversions
HyperSpec - Function GRAPHIC-CHAR-P