Github user bzz commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/654#issuecomment-179386505 Very nice useage of `Enum` here! Probably a knit-piking but may be also `SHIFT_ENTER` diserves a place there too? Looks great to me. I'm just curious, may be you know, why open parentesys is a key, but closing one seems to be ok inside the string literal? :+1: for more tests that help improving stability!
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