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7.5.49.5 Replacement

Scheme Procedure: bytestring-replace bytevector1 bytevector2 start1 end1 [start2 end2] ¶

Returns a newly allocated bytevector with the contents of bytevector1, except that the bytes indexed by start1 and end1 are not included but are replaced by the bytes of bytevector2 indexed by start2 and end2.

(bytestring-replace #u8"Vogon torture" #u8"poetry" 6 13)
⇒ #u8"Vogon poetry"