puffnfresh/sweet-fantasies — pull request #6 by markandrus (2014-01-04 07:01:12+00:00)
Title: Fix/var bindings in tail

Following up on @raimohanska's report of issue #5, this pull request adds some missing var-binding cases. Pretty mechanical work, and not very fun to write, so I hope I didn't miss anything (a fresh pair of eyes would be swell!).

However, this implementation requires each var-binding include the var prefix:

```js
$do {
a <- Identity.of(1)
var b = a + 1
var c = b * b
return d
}
```