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(repl-substring string target repl pos)
Replaces target with repl in string at pos.
Norman Walsh, <norm@berkshire.net>
(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)))
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Copyright © 1997, 1998 Norman Walsh