--- a/tests/test-diff-change.t	Sat Aug 06 20:37:48 2016 +0900
+++ b/tests/test-diff-change.t	Sat Aug 06 20:46:53 2016 +0900
@@ -50,6 +50,13 @@
   @@ -1,1 +1,1 @@
   -third
   +wdir
+  $ hg diff -r '(2:2)' --nodates
+  diff -r bf5ff72eb7e0 file.txt
+  --- a/file.txt
+  +++ b/file.txt
+  @@ -1,1 +1,1 @@
+  -third
+  +wdir
   $ hg diff -r 2::2 --nodates
   diff -r bf5ff72eb7e0 file.txt
   --- a/file.txt