id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
807620560,MDExOlB1bGxSZXF1ZXN0NTcyODM5Mjk3,4902,also apply combine_attrs to the attrs of the variables,14808389,closed,0,,,7,2021-02-12T23:53:49Z,2021-05-05T16:43:08Z,2021-05-05T16:37:25Z,MEMBER,,0,pydata/xarray/pulls/4902,"Follow-up to #4827. The current behavior is to always combine with `combine_attrs=""override""`, even if the caller requested something else.

- [x] follow-up to #4827, closes #4017
- [x] Tests added
- [x] Passes `pre-commit run --all-files`
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
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