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!
#testcases dirstate-v1 dirstate-v2
#if dirstate-v2
$ cat >> $HGRCPATH << EOF
> [format]
> use-dirstate-v2=1
> [storage]
> dirstate-v2.slow-path=allow
> EOF
#endif
$ rm -rf r
$ hg init r
$ cd r
$ mkdir d1
$ mkdir d2
$ touch d1/f d2/f
$ hg commit -Am '.'
adding d1/f
adding d2/f
$ echo 'syntax:re' >> .hgignore
$ echo '^d1$' >> .hgignore
$ hg commit -Am "ignore d1"
adding .hgignore
Now d1 is a directory that's both committed and ignored.
Untracked files in d2 are still shown, but ones in d1 are ignored:
$ touch d1/g
$ touch d2/g
$ RAYON_NUM_THREADS=1 hg status
? d2/g