text: actual = '';
  expected = '4,4,4,';
  
  function k(f_arg) { 
    for (var i = 0; i < 5; ++i) {
      f_arg(i);
    }
  }
  
  function t() {
    var x = 1;
    k(function (i) { x = i; });
    appendToActual(x);
  }
  
  t();
  t();
  t();
  
  
  assertEq(actual, expected)
  