diff -r 44fd4cfc6c0a -r 786289423e97 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Mon Dec 18 15:18:37 2017 -0800
+++ b/mercurial/cmdutil.py	Tue Dec 19 16:27:24 2017 -0500
@@ -1515,7 +1515,7 @@
                     match.uipath(matchroot), uirelroot))
 
     if stat:
-        diffopts = diffopts.copy(context=0)
+        diffopts = diffopts.copy(context=0, noprefix=False)
         width = 80
         if not ui.plain():
             width = ui.termwidth()