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> (To go off on a tangent: [...]

As a somewhat similar example, but more common and still "problematic":
In C, a+++++b could be correctly parsed as a++ + ++b, but it's not.
Following the "longest" rule in the scanner, it's parsed as a++ ++ +b,
which raises an error, as one cannot increment 'a++'.

I believe the same problem happens in several languages with C-like
increments. (Java, JS, etc.)

-- Roberto