https://issues.dlang.org/show_bug.cgi?id=24648

Dennis <dkorpel@live.nl> changed:

           What    |Removed                     |Added
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                 CC|                            |dkorpel@live.nl

--- Comment #1 from Dennis <dkorpel@live.nl> ---
> It’s the only exception to this rule: Unary operators bind stronger than binary ones. (Another is the template instantiation operator, for which the exception makes sense.)

Implied here is that the exception for `^^` makes no sense, but you just showed how it's consistent with mathematical convention, so it makes total sense to me. Adding an error seems like needless code breakage and uglifying.

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