Document Seq.ACCEPTS

[JJ]

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)