mercurial/cext/bdiff.pyi

rhg: ignore readonly FS error when saving dirstate

The error is already ignored when the .hg directory is read-only,
so this is only fair. (the python hg is silent on readonly fs, too)

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]]: ...