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On Wed, May 18, 2016 at 4:04 PM, Roberto Ierusalimschy <> wrote:
One problem with all proposed solutions is math.mininteger. The
lexer reads numbers without signal. (Several languages do the
same, e.g. C).  This means that -9223372036854775808 is read as
-(9223372036854775808) (a unary minus applied over a positive
constant). But 9223372036854775808 is not a valid integer, so it would
result in a float (or nil, or inf, or error). Whatever the choice, the
final value of -9223372036854775808 would not be an integer, despite
it being a valid integer.

BTW, if user has redefined numeric operations,
how do you decide the way the following Lua code should be interpreted:
Which of the following two variants it is equivalent to: