What about associativity?
- Is 6 / 5 * 4 equal to (6 / 5) * 4 (like Perl) or to 6 / (5 * 4)?
- Is 2 ** 3 ** 4 equal to (2 ** 3) ** 4 or to 2 ** (3 ** 4) (like Perl)?
Deviances from Perl's behaviour should be documented, IMHO.
For fun since it doesn't really matter, something else to look at is the interaction between unary minus, post- and pre- -decrement and -increment. For example,
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