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SketchyLISP
Reference
  Copyright (C) 2006
Nils M Holm

char-alphabetic?

Conformance: R5RS

Purpose: Test whether a char is alphabetic.

Arguments:
X - char

Implementation:

(define (char-alphabetic? x)
  (or (char-lower-case? x)
      (char-upper-case? x)))

Example:

(char-alphabetic? #\c) 
=> #t

See also:
char-lower-case?, char-numeric?, char-whitespace?.