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2017-01-12 3:18 GMT+02:00 William Ahern <>:

> If Lua 5.3 really is good enough, given Lua's track record I would expect
> future versions to naturally maintain strong backwards compatibility,
> regardless of any specific intent to do so. Indeed, for most problems it's
> trivial to write Lua 5.1, 5.2, and 5.3 compatible code.

Perhaps someone concerned about these issues could design
a specification of "clean Lua", the intersection of Lua 5.1, 5.2 and
5.3, and provide a tool that checks whether code conforms to it.