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The user wants me to refactor a Python function to use fewer operations and be easier to understand. Let me analyze the current code:
Builds a list of file paths to search
Resolves them to absolute paths
Reverses, deduplicates, reverses back
Converts to strings
Deduplicates again with dict.fromkeys
The second deduplication with dict.fromkeys is redundant since the earlier logic already deduplicates. The reverse-uniq-reverse pattern is a way to preserve last-wins deduplication while keeping first occurrence order.
Let me simplify this.
-> Read .
Thought: 382ms
The user wants me to refactor the Python function. Let me write the refactored version directly.
Eliminated the reverse/uniq/reverse dance — the original reversed the list, removed duplicates (keeping first occurrence = originally last), then reversed back. That's "last-wins" dedup. The new approach iterates forward and skips already-seen paths, which is simpler and does the same thing.
Removed redundant dict.fromkeys — the seen set already handles deduplication, making the second pass unnecessary.
Consolidated XDG logic — replaced the if/else block with an or expression.
Single comprehension for string conversion — replaced list(map(str, files)) with a list comprehension.