Stop rewriting withFilter to filter #4602
Merged
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This was dropped for Scala 2 in scala/scala#5252 for 2.12.0-RC1, as discussed for instance in scala/bug#6455 and scala/bug#8339.
Beyond this code, also remove
MaybeFilter
attachment and attending codeintroduced in fcea3d5.
A caveat is that, unexpectedly, this code was added in 2016-08-24, after
scala/scala#5252 was merged, as if the decision was reversed; but #1461 says:
So I assume this just happened because the Scala 2 PR (of course) didn't remove our pending test.