--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/cext/bdiff.pyi	Sat Nov 07 16:28:30 2020 -0800
@@ -0,0 +1,12 @@
+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]]: ...