Github user tristanreid commented on the pull request:
https://github.com/apache/spark/pull/11616#issuecomment-194898035
Oh interesting, I hadn't noticed that. Wonder if it has significance for
typesetting or something, like:
`x^i+1^`
I'll do some research on this - If there's no technical reason to prefer it
and if you're amenable I'll grep for the other occurrences and standardize?
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