repl-substring
Name
repl-substring -- Replace substring in a string
Synopsis
(repl-substring string target repl pos)
Description
Replaces target with repl in string at pos.
Author
Norman Walsh, <ndw@nwalsh.com>
Source Code
(define (repl-substring string target repl pos)
  ;; Replace substring in a string
  (let ((matches (repl-substring? string target pos)))
    (if matches
	(string-append
	 (substring string 0 pos)
	 repl
	 (substring string 
		    (+ pos (string-length target)) 
		    (string-length string)))
	string)))