mayya-sharipova opened a new pull request, #16261:
URL: https://github.com/apache/lucene/pull/16261

   - Fix violation: inherited hashCode was identity-based (char[].hashCode()), 
breaking equals/hashCode contract
   - Override hashCode() with content-stable implementation using 
Arrays.hashCode() per element
   - Incorporate ignoreCase into both equals() and hashCode() so sets differing 
only in case mode are treated as unequal
   - Expose ignoreCase via isIgnoreCase() on CharArrayMap and CharArraySet
   
   Potential breakage: code comparing two CharArraySet instances with same 
words but different ignoreCase will now see them as unequal; code using 
CharArraySet as a map key will observe different bucketing.
   
   


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