# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1394822486 25200
# 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 -r 91a3d50f0e3a -r 6744f4621434 mercurial/revset.py
--- a/mercurial/revset.py	Thu Mar 13 11:36:45 2014 -0700
+++ b/mercurial/revset.py	Fri Mar 14 11:41:26 2014 -0700
@@ -2174,7 +2174,7 @@
 
     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