--- a/mercurial/cmdutil.py	Thu Dec 17 13:07:34 2015 -0800
+++ b/mercurial/cmdutil.py	Thu Dec 17 14:38:22 2015 +0000
@@ -116,6 +116,7 @@
         diffopts = patch.difffeatureopts(ui, opts=opts, whitespace=True)
         diffopts.nodates = True
         diffopts.git = True
+        diffopts.showfunc = True
         originaldiff =  patch.diff(repo, changes=status, opts=diffopts)
         originalchunks = patch.parsepatch(originaldiff)