table constructor and array length bug??

[Wesley Smith <wesley.hoke@...>]

2 identical tables, 2 different lengths:

res = {nil, "x"}
res2 = {}
res2[1] = nil
res2[2]=  "x"

print(#res, #res2)  ---->>   2, 0

I would expect both to have length 0, but the former has length 2.
This smells like a bug to me.

wes