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On Jun 13, 2014, at 5:22 PM, Thiago L. <> wrote:

>> No, the OP pointed out that the overhead of doing the metamethod test in table.unpack() is low, since it can be done once at the start of unpack(), which then chooses a (fast) rawgeti() based loop or a (generic) index metamethod loop. So you get the best of both worlds in one API.
>> —Tim
> What if we want raw unpacking of metatabled tables? (aka keep nil as nil)

1. Save metatable from table
2. Set metatable on table to nil
3. Unpack it
4. Restore metatable