BUG: ensure to always return new objects in Index set operations (avoid metadata mutation)#63174

Merged

jorisvandenbossche merged 7 commits intopandas-dev:mainfrom

deniskrds:fix-index-setops-mutation

Dec 19, 2025

Commits on Nov 22, 2025

BUG: Fix metadata mutation in Index set operations (intersection/union) (#63169)
deniskrds
committed

Commits on Nov 23, 2025

BUG: Fix metadata mutation in MultiIndex set operations
deniskrds
committed

Commits on Dec 7, 2025

TST: Flatten TestSetOpsMutation into module-level functions
deniskrds
committed