recognizer for standard characters
Major Section:  PROGRAMMING

(Standard-char-p x) is true if and only if x is a ``standard'' character, i.e., a member of the list *standard-chars*. This list includes #Newline and #Space characters, as well as the usual punctuation and alphanumeric characters.

Standard-char-p has a guard requiring its argument to be a character.

Standard-char-p is a Common Lisp function. See any Common Lisp documentation for more information.