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Description
The problem
it does have specific behavior (although not clear what that is, according to rakudo/rakudo#2468), so it should probably be documented specifically.
Suggestions
For the time being, wait for that issue to be solved. Then, document it.
This, for instance, returns True
say [1,1,2] ~~ @fib[^3]
Right and left iterate, and smartmatch is done at every iteration. It works with lists too (any iterable)