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On Wed, Jul 3, 2013 at 9:58 AM, steve donovan <> wrote:

> If Lua 5.3 introduced 'null' (however implemented - tho it would be nice if
> it evaluated as 'false') then we would have the usual lag where everyone had
> to port their modules, and in a few years everyone would use null.  In the
> meantime, compatibility libraries would appear.

SQL-like trinary logic could be emulated.
Add an `unknown` boolean type with false-ish semantics.