phases: update the phase set as we go during retract boundary Apparently iterating over the `changed_revs` dictionary is very expensive. 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 prev-changeset: 30.0 seconds this-changeset: 4.6 seconds So, the performance regression is gone. Once again: thanks to marvelous Python!

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Issue351: mq: qrefresh can create extra revlog entry

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  $ echo "[extensions]" >> $HGRCPATH

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  $ echo "mq=" >> $HGRCPATH

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  $ hg init repo

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  $ cd repo

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  $ hg qinit

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  $ echo b > b

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  $ hg ci -A -m foo

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  adding b

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  $ echo cc > b

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  $ hg qnew -f foo.diff

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  $ echo b > b

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  $ hg qrefresh

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  $ hg debugindex b

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     rev linkrev       nodeid    p1-nodeid    p2-nodeid

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       0       0 1e88685f5dde 000000000000 000000000000

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