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Pants

<https://github.com/pantsbuild/pants/issues/19634|#19634 `lint` has duplicate files when invoking union rules>
Issue created by <https://github.com/thejcannon|thejcannon>
*Describe the bug*  
Split from <https://github.com/pantsbuild/pants/issues/17403#issuecomment-1682688673|#17403 (comment)> the `fmt`/`fix` batch is built per-address, but `fmt`/`fix` are applied per-file. Since one file can represent multiple addresses, we should de-dup.
<https://github.com/pantsbuild/pants|pantsbuild/pants>

<https://github.com/pantsbuild/pants/issues/19634|#19634 `lint` has duplicate files when invoking union rules>
Issue closed as completed by <https://github.com/thejcannon|thejcannon>
<https://github.com/pantsbuild/pants|pantsbuild/pants>