--- a/mercurial/context.py	Tue May 22 15:02:52 2018 +0200
+++ b/mercurial/context.py	Wed May 23 15:31:40 2018 +0200
@@ -294,14 +294,19 @@
                               auditor=r.nofsauditor, ctx=self,
                               listsubrepos=listsubrepos, badfn=badfn)
 
-    def diff(self, ctx2=None, match=None, opts=None):
+    def diff(self, ctx2=None, match=None, changes=None, opts=None,
+             losedatafn=None, prefix='', relroot='', copy=None,
+             hunksfilterfn=None):
         """Returns a diff generator for the given contexts and matcher"""
         if ctx2 is None:
             ctx2 = self.p1()
         if ctx2 is not None:
             ctx2 = self._repo[ctx2]
         diffopts = patch.diffopts(self._repo.ui, opts)
-        return patch.diff(self._repo, ctx2, self, match=match, opts=diffopts)
+        return patch.diff(self._repo, ctx2, self, match=match, changes=changes,
+                          opts=diffopts, losedatafn=losedatafn, prefix=prefix,
+                          relroot=relroot, copy=copy,
+                          hunksfilterfn=hunksfilterfn)
 
     def dirs(self):
         return self._manifest.dirs()