1 + 'a' = 'b'

For the mathematically inclined, +(::Char,::Int) forms a group action of the (additive) group of integers on the set of characters.

Similarly +(::Ptr{T},::Int) is a group action of integers on pointers and +(::Int,::Int) is the usual group action of integers on themselves, namely the (additive) group operation on integers. So this is all consistent and legit from a mathematical point of view.

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