Re: tables holding nil

[Cosmin Apreutesei <cosmin.apreutesei@...>]

>> Just found out that the __index metamethod is called for x=a[nil], but
>> __newindex is not called for a[nil]=x -- instead the operation is
>> specifically forbidden. I'd rather have it called too and not throw an
>> error. What am I missing?
>
> nil is not a valid table key.  That's all!

Then shouldn't access to a[nil] be forbidden too? Not that I'd like it
any better. What's the logic behind this limitation though?