[racket-dev] `string-split'

 (define (string-split str [sep #px"\\s+"])
>    (remove* '("") (regexp-split sep str)))
>

Nearly, I meant something more like this:

(define (string-split str [splitter " "])
  (regexp-split (regexp-quote splitter) str))

No regexp from the user POV, and much easier to use with little knowledge.
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