rust-index: remove one collect when converting back Turns out this is slightly faster. Sending the results back to Python is still the most costly (like 75% of the time) of the whole method, but it's about as fast as it can be now. hg perf::phases on mozilla-try-2023-03-22 before: 0.267114 after: 0.247101

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skip ignored directories if -i or --all not specified

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  $ hg init t

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  $ cd t

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  $ echo 'ignored' > .hgignore

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  $ hg ci -qA -m init -d'2 0'

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  $ mkdir ignored

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  $ ls

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  ignored

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  $ hg purge -v --no-confirm

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  $ ls

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  ignored