Unary minus precedence preference

[htom trites]

Do you take -2^2 to mean: (-2)^2, -(2^2), or 0-(2^2)?

I've always taught that unary minus is the last (and should be parsed as if it was that by a computer), even though it's usually written as the second.

(I admit I came to this conclusion writing a compiler that emitted code for both one's and two's complement ALUs.)