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phases: avoid N² behavior in `advanceboundary`...
phases: avoid N² behavior in `advanceboundary` We allowed duplicated entries in the deque, which each entry could potentially insert all its ancestors. So advancing boundary for the full repository would mean each revision would walk all its ancestors, resulting in O(N²) iteration. For repository of any decent size, N² is quickly insane. We introduce a simple set to avoid this and get back to reasonable performance.
Martin von Zweigbergk - - Load All Authors

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Address commentary in manifest.excludedmanifestrevlog.add - specifically we should improve the collaboration with core so that add() never gets called on an excluded directory and we can improve the stand-in to raise a ProgrammingError.

Reason more completely about rename-filtering logic in narrowfilelog. There could be some surprises lurking there.

Formally document the narrowspec format. For bonus points, unify with the server-specified narrowspec format.

narrowrepo.setnarrowpats() or narrowspec.save() need to make sure they're holding the wlock.

The follinwg places do an unrestricted dirstate walk (including files outside the narrowspec). Some of them should perhaps not do that.

  • debugfileset
  • perfwalk
  • sparse (but restricted to sparse config)
  • largefiles