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typing: add type hints to the `opener` attributes and arguments of revlog...

typing: add type hints to the `opener` attributes and arguments of revlog When making revlog and filelog classes visible to pytype, it got confused quite a bit in `mercurial/revlogutils/rewrite.py`, thinking it had a plain `Callable`, and flagging additional methods on it like `join()` and `rename()`. I couldn't figure out how it reduced to that (and PyCharm flagged `opener` references as `Any`), but this makes it happy. So make this change before making the classes visible. The vfs class hierarchy is a bit wonky (e.g. `filteredvfs` is not a `vfs`), so this may need to be revisited with a Protocol class that covers all of the `vfs` classes. But for now, everything works.

Matt Harbison - - Load All Authors

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      from typing import (

          List,

          Tuple,

      )

      version: int

      def bdiff(a: bytes, b: bytes) -> bytes: ...

      def blocks(a: bytes, b: bytes) -> List[Tuple[int, int, int, int]]: ...

      def fixws(s: bytes, allws: bool) -> bytes: ...

      def splitnewlines(text: bytes) -> List[bytes]: ...

      def xdiffblocks(a: bytes, b: bytes) -> List[Tuple[int, int, int, int]]: ...

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				from typing import (
				List,
				Tuple,
				)

				version: int

				def bdiff(a: bytes, b: bytes) -> bytes: ...
				def blocks(a: bytes, b: bytes) -> List[Tuple[int, int, int, int]]: ...
				def fixws(s: bytes, allws: bool) -> bytes: ...
				def splitnewlines(text: bytes) -> List[bytes]: ...
				def xdiffblocks(a: bytes, b: bytes) -> List[Tuple[int, int, int, int]]: ...