issue_comments: 314967384

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https://github.com/pydata/xarray/issues/1477#issuecomment-314967384 https://api.github.com/repos/pydata/xarray/issues/1477 314967384 MDEyOklzc3VlQ29tbWVudDMxNDk2NzM4NA== 1217238 2017-07-13T04:27:43Z 2017-07-13T04:27:43Z MEMBER

Yes, these both sound like bugs and should be fixed. I don't see any use case for ds.rename({'a': 'd', 'b': 'd'}) as I'm breaking it (I think it should already give an error).

A pull request to fix these would be greatly appreciated!

 
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