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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import sys

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from mercurial import (

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    pycompat,

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    util,

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)

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def main(argv):

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    enc = util.urlreq.quote(pycompat.sysbytes(argv[1]))

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    if pycompat.iswindows:

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        fmt = 'file:///%s'

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    else:

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        fmt = 'file://%s'

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    print(fmt % pycompat.sysstr(enc))

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if __name__ == '__main__':

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    main(sys.argv)