Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/11616#issuecomment-194744821
That's entirely fine, but I note that some people intentionally write `^2^`
instead of `^2` (not me). You can see both occurrences throughout the code
base. Ideally we'd standardize rather than flip one to the other in one case.
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