- (string-copy! target tstart s [start end]) -> unspecifiedprocedure
Copy the sequence of characters from index range [START,END) in string S to string TARGET, beginning at index TSTART. The characters are copied left-to-right or right-to-left as needed -- the copy is guaranteed to work, even if TARGET and S are the same string.
It is an error if the copy operation runs off the end of the target string, e.g.
(string-copy! (string-copy "Microsoft") 0 "Regional Microsoft Operating Companies") => ''error''