diff -r 88d244f4edfd -r dcc56e10c23b mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Tue Jun 23 13:46:58 2015 -0700
+++ b/mercurial/cmdutil.py	Tue Jun 23 14:28:15 2015 -0700
@@ -3102,7 +3102,7 @@
         diffopts.git = True
         reversehunks =  repo.ui.configbool('experimental',
                                            'revertalternateinteractivemode',
-                                           False)
+                                           True)
         if reversehunks:
             diff = patch.diff(repo, ctx.node(), None, m, opts=diffopts)
         else: