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on 8/3/07 3:10 PM, Roberto Ierusalimschy at wrote:

> Claim 1: We lied: nils are not first-class values (because we cannot
> store them in talbes...).

This is also a problem when trying to use one table to shadow another via
__index. You can't override a value with nil. Even with functions for
__index and __newindex, it's a lot more complicated than one would like.

I'm not proposing a fix.