# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2014-03-14 18:41:26
# Node ID 6744f4621434b184b2d4dfb1ed9d1a94b05ca7dd
# Parent  91a3d50f0e3a7f53f13eda447e688deb97a51fdd

revset: add a default argument for baseset.__init__

We are now able to create empty baseset using `baseset()` as we are able to
create empty list with `list()`.

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -2174,7 +2174,7 @@ class baseset(list):
 
     Every method in this class should be implemented by any smartset class.
     """
-    def __init__(self, data):
+    def __init__(self, data=()):
         super(baseset, self).__init__(data)
         self._set = None