Precedence of ??? operator

[Poshi]

Just run across an operator precedence issue where the results where not as expected (at least, for my mind, as they were as expected according the documentation).
I ran something like:
put '$x = $a???0 + $b???0'

The intent was to add two numbers, substituting by zero the empty ones. I was mostly getting the $a value, but not the sum of $a and $b. This makes sense since the precedence of the operators makes that expression equivalent to:
put '$x = ($a???(0 + $b))???0'
which is wildly different from what I was expecting.

Would not make sense to increase the operator precedence of ??/??? right after the parenthesis? Unfortunately, that would be a breaking change for old scripts that rely on the current precedence :-(

[johnkerl]

@Poshi this is a bug :(.

[Poshi]

Then, that bug expanded to the documentation, as that behavior matches the docs :-/
I see you already opened the corresponding bug report. Thanks for acknowledging it.