lexicial versus dynamic

[albertvanderhorst]

The most straightforward and important test is missing for environments: the test whether environments are truely lexical

(def! a 12)
(def! fx (fn* () a)
(fx)
(def! a 2000)
(fx) 

My implementation gave 12, 2000 of (fx) and apparently this should be 12,12 .
So I have heard, but I could be mistaken. The more reason to put this test in.

[kanaka]

@albertvanderhorst That's a good test. The first call to fx should be 12, the second 2000 (because function creation should bind the current environment and def! I created a PR that includes another env binding test here: #677 so I'm going to close this issue now.