dirstate-v2: Change the on-disk format to be tree-shaped Nodes are stored not only for tracked files but also for their ancestor directories. A node has "pointers" (byte count from the start of the file) to its direct child nodes. Everything can be accessed with zero copy. Differential Revision: https://phab.mercurial-scm.org/D10722

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from typing import Optional

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version: int

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def b85encode(text: bytes, pad: Optional[int]) -> bytes: ...

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def b85decode(text: bytes) -> bytes: ...