phases: avoid a potentially costly dictionary interation in some case If we retract for the draft phase, there is not non-public item to be retracted and we can skip this part. This part is was apparently super costly thanks to Python. On mozilla-try-2019-02-18, a perf::unbundle call with a 10 000 changesets bundle gives give use the following timing. e57d4b868a3e: 4.6 seconds ac1c75188440: 102.5 seconds this-changeset: 30.0 seconds So we recovered about ⅔ of the regression, the next changeset will give us the rest back.

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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