--- a/tests/test-evolve-obshistory.t	Thu Jul 26 18:28:44 2018 +0200
+++ b/tests/test-evolve-obshistory.t	Tue May 22 12:07:24 2018 +0200
@@ -1744,6 +1744,20 @@
        rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, successor is unknown locally)
   
+
+  $ hg obslog 7a230b46bf61 --patch -f
+  o  7a230b46bf61 (2) A2
+  |
+  @  471f378eab4c (1) A0
+       reworded(description) as 7a230b46bf61 using amend by test (at Thu Jan 01 00:00:00 1970 +0000)
+         diff -r 471f378eab4c -r 7a230b46bf61 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
+         @@ -1,1 +1,1 @@
+         -A0
+         +A2
+  
+  
   $ hg obslog 7a230b46bf61 --color=debug --patch
   o  [evolve.node|7a230b46bf61] [evolve.rev|(2)] [evolve.short_description|A2]
   |