Loops/comprehensions over decreasing ranges don't work

[aroben]

$ coffee -be --cli "console.log (n for n in [5..-5])"
[]
$ coffee -bj --cli "console.log (n for n in [5..-5])"
// Generated by CoffeeScript 2.0.0-beta9-dev
var n;
console.log(function (accum$) {
  for (i$ = 5; i$ <= -5; ++i$) {
    n = i$;
    accum$.push(n);
  }
  return accum$;
}.call(this, []));

jashkenas/coffee-script produces the following:

$ coffee -be "console.log (n for n in [5..-5])"
[ 5, 4, 3, 2, 1, 0, -1, -2, -3, -4, -5 ]
$ coffee -bce "console.log (n for n in [5..-5])"
// Generated by CoffeeScript 1.7.1
var n;

console.log((function() {
  var _i, _results;
  _results = [];
  for (n = _i = 5; _i >= -5; n = --_i) {
    _results.push(n);
  }
  return _results;
})());

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