diff --git a/mercurial/revset.py b/mercurial/revset.py --- a/mercurial/revset.py +++ b/mercurial/revset.py @@ -2368,12 +2368,16 @@ class baseset(abstractsmartset): """Returns True if the collection is ascending order, False if not. This is part of the mandatory API for smartset.""" + if len(self) <= 1: + return True return self._ascending is not None and self._ascending def isdescending(self): """Returns True if the collection is descending order, False if not. This is part of the mandatory API for smartset.""" + if len(self) <= 1: + return True return self._ascending is not None and not self._ascending def first(self):