--- a/mercurial/commands.py	Mon Feb 06 23:55:54 2017 -0500
+++ b/mercurial/commands.py	Mon Feb 06 22:52:47 2017 -0500
@@ -361,6 +361,7 @@
 
     Returns 0 on success.
     """
+    ui.pager('annotate')
     if not pats:
         raise error.Abort(_('at least one filename or pattern is required'))