fun f (x, y) {
  fun () {x+y}
}

printf ("Cloning int: %d\n", clone (5));
printf ("Cloning string: %s\n", clone ("abc"));
printf ("Cloning array: %s\n", clone ([1, 2, 3, 4, 5]).string);
printf ("Cloning sexp: %s\n", clone (A (1, 2, 3, 4, 5)).string);

{
  local c = f (5, 6), cc = clone (c);
  
  printf ("Cloning closure: address %s, %d, %d\n", if cc[0] == c[0] then "ok" else "fail" fi, c[1], c[2])
}