html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/pull/1422#issuecomment-303697667,https://api.github.com/repos/pydata/xarray/issues/1422,303697667,MDEyOklzc3VlQ29tbWVudDMwMzY5NzY2Nw==,4160723,2017-05-24T11:32:40Z,2017-05-24T11:32:40Z,MEMBER,I've tried adding tests for lines in `as_variable` that were not yet covered.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,230631480
https://github.com/pydata/xarray/pull/1422#issuecomment-303378994,https://api.github.com/repos/pydata/xarray/issues/1422,303378994,MDEyOklzc3VlQ29tbWVudDMwMzM3ODk5NA==,4160723,2017-05-23T12:13:56Z,2017-05-23T12:13:56Z,MEMBER,"Oh yes I haven't run the tests locally before submitting this, I didn't expected that.

Mmm I don't see any current use of the `copy` keyword argument inside the `as_variable` function. [Here](https://github.com/pydata/xarray/blob/a943419b86c1c952d07cef6acf0b10ea5784a4cc/xarray/core/groupby.py#L542) is the only place where I found `copy` to be explicitly provided.  Can I safely remove it also there? If I remove it the tests pass again (although I got 3 remaining failing tests that don't seem to be related to this issue as they fail either with or without the `copy` argument).

","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,230631480