Pattern: Ambiguous operator precedence
Issue: -
This rule looks for expressions containing multiple binary operators
where precedence is ambiguous due to lack of parentheses. For example,
in 1 + 2 * 3, the multiplication will happen before the addition, but
lexically it appears that the addition will happen first.
The rule does not consider unary operators (ie. !a or -b) or comparison
operators (ie. a =~ b) because those are not ambiguous.
NOTE: Ranges are handled by Lint/AmbiguousRange.
# bad
a + b * c
a || b && c
a ** b + c
# good (different precedence)
a + (b * c)
a || (b && c)
(a ** b) + c
# good (same precedence)
a + b + c
a * b / c % d