diff -r 871485bd03fd -r 3df7fc75afc5 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Fri Mar 27 13:48:51 2015 -0500
+++ b/mercurial/cmdutil.py	Fri Mar 27 13:51:21 2015 -0500
@@ -169,7 +169,6 @@
                 mergemod.update(repo, repo.dirstate.p1(),
                         False, True, choices)
 
-
             # 3b. (apply)
             if dopatch:
                 try:
@@ -673,7 +672,6 @@
                     res = lambda p: dest
         return res
 
-
     pats = scmutil.expandpats(pats)
     if not pats:
         raise util.Abort(_('no source or destination specified'))
@@ -980,7 +978,6 @@
             def write(s, **kw):
                 fp.write(s)
 
-
         write("# HG changeset patch\n")
         write("# User %s\n" % ctx.user())
         write("# Date %d %d\n" % ctx.date())
@@ -1652,7 +1649,6 @@
         else:
             last = filelog.rev(node)
 
-
         # keep track of all ancestors of the file
         ancestors = set([filelog.linkrev(last)])
 
@@ -3046,7 +3042,6 @@
                     ui.warn(msg % rel)
                 break
 
-
         if not opts.get('dry_run'):
             needdata = ('revert', 'add', 'undelete')
             _revertprefetch(repo, ctx, *[actions[name][0] for name in needdata])