issue_comments: 568109114

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https://github.com/pydata/xarray/pull/3649#issuecomment-568109114 https://api.github.com/repos/pydata/xarray/issues/3649 568109114 MDEyOklzc3VlQ29tbWVudDU2ODEwOTExNA== 35968931 2019-12-20T22:21:17Z 2019-12-20T22:21:17Z MEMBER

Yeah this "automatic alignment" behaviour is everywhere so I think it makes sense for it to be the default.

Okay, in that case shall we add an option to opt-in to the stricter check by passing fill_value=None? With a quick note about it in the docstring for that argument?

 
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