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Hello !

I just found when reading on page 80 see bellow:


To be really picky, the type checker of function definitions should also
check that all variables in the parameter list are distinct. We shall see in the next section that variables introduced in declarations are checked to be new.
Then they must also be new with respect to the function parameters.


I decided to check lua and found that lua/luajit accept this without complain:


function aa(a,a) return a end

print(aa(1,2))  --> 2


Is this the expected behavior or a bug ?

Cheers !