diff -r 79d7d715f3d0 -r b62000a28812 mercurial/patch.py
--- a/mercurial/patch.py	Fri Jul 06 21:38:33 2018 +0900
+++ b/mercurial/patch.py	Fri Jul 06 21:41:36 2018 +0900
@@ -2233,7 +2233,7 @@
 class GitDiffRequired(Exception):
     pass
 
-diffopts = diffutil.diffopts
+diffopts = diffutil.diffallopts
 diffallopts = diffutil.diffallopts
 difffeatureopts = diffutil.difffeatureopts