--- a/mercurial/revlogutils/deltas.py Mon Feb 21 13:03:43 2022 -0700
+++ b/mercurial/revlogutils/deltas.py Mon Feb 21 13:08:28 2022 -0700
@@ -38,7 +38,7 @@
LIMIT_DELTA2TEXT = 2
-class _testrevlog(object):
+class _testrevlog:
"""minimalist fake revlog to use in doctests"""
def __init__(self, data, density=0.5, mingap=0, snapshot=()):
@@ -544,7 +544,7 @@
@attr.s(slots=True, frozen=True)
-class _deltainfo(object):
+class _deltainfo:
distance = attr.ib()
deltalen = attr.ib()
data = attr.ib()
@@ -927,7 +927,7 @@
yield (prev,)
-class deltacomputer(object):
+class deltacomputer:
def __init__(self, revlog):
self.revlog = revlog