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On Tue, Aug 25, 2015 at 7:14 AM, Rena <> wrote:
> Lua strings are immutable (they can't be changed), so there should never be
> multiple copies of a string in one Lua state[1].
> [...]
> [1] for very short strings it might keep multiple copies when this would be
> more efficient than keeping references, but this is an implementation detail
> that we don't need to know about. :-)

You have it reversed. Lua may have multiple copies of large strings
but not short strings (len(s) <= 40):

Patrick Donnelly