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
2017285297,PR_kwDOAMm_X85gtObP,8491,Warn on repeated dimension names during construction,35968931,closed,0,,,13,2023-11-29T19:30:51Z,2023-12-01T01:37:36Z,2023-12-01T00:40:18Z,MEMBER,,0,pydata/xarray/pulls/8491,"<!-- Feel free to remove check-list items aren't relevant to your change -->

- [x] Closes #2226 and #1499 by forbidding those situations (but we should leave #3731 open as the ""official"" place to discuss supporting repeated dimensions
- [x] Tests added
- [x] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
- [ ] ~~New functions/methods are listed in `api.rst`~~
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