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arrange for terpri added by alexcharlton on Wed May 28 16:00:13 2014

(define tags '(a b c))

(define (arrange . keys)
  (let loop ((tags tags))
    (if (null? tags)
        '()
         (cons (get-keyword (car tags) keys) (loop (cdr tags))))))
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Which one-argument R5RS procedure returns 3 when given `'(1 2 3 4)' as input?
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