--- a/tests/test-evolve-effectflags.t	Fri May 19 19:52:57 2017 +0200
+++ b/tests/test-evolve-effectflags.t	Fri May 19 20:15:05 2017 +0200
@@ -71,3 +71,22 @@
   x  2ee0a31bd600 (6) D0
        rewritten by test (*) as 131ac3eecd92 (glob)
   
+
+amend touching the diff
+-----------------------
+
+  $ mkcommit E0
+  $ echo 42 >> E0
+  $ hg amend
+
+check result
+
+  $ hg debugobsolete --rev .
+  5734caf1004261ffc2ed05763b82bf9d75ba3788 0 {f75604747b4fd2dfebe7f48c6e629aea15e3b237} (*) {'ef1': '0', 'user': 'test'} (glob)
+  f75604747b4fd2dfebe7f48c6e629aea15e3b237 bed7e49faeb8ae06649b547a755d50f5bb0be220 0 (*) {'ef1': '8', 'user': 'test'} (glob)
+  $ hg obslog .
+  @  bed7e49faeb8 (10) E0
+  |
+  x  f75604747b4f (8) E0
+       rewritten by test (*) as bed7e49faeb8 (glob)
+