diff -r 62f742d144da -r 85cdce113c2c tests/test-evolve-obshistory.t
--- a/tests/test-evolve-obshistory.t	Sat Dec 16 23:40:39 2017 +0100
+++ b/tests/test-evolve-obshistory.t	Tue Jan 16 04:35:34 2018 +0100
@@ -62,8 +62,9 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description, content) as 4ae3a4151de9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/4ae3a4151de9-changeset-description
+         diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,3 @@
          -A0
          +A1
@@ -78,13 +79,36 @@
          +42
   
   
+  $ hg obslog --patch --color debug
+  @  [evolve.node|4ae3a4151de9] [evolve.rev|(3)] [evolve.short_description|A1]
+  |
+  x  [evolve.node|471f378eab4c] [evolve.rev|(1)] [evolve.short_description|A0]
+       [evolve.verb|rewritten](description, content) as [evolve.node|4ae3a4151de9] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
+         [diff.diffline|diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description]
+         [diff.file_a|--- a/changeset-description]
+         [diff.file_b|+++ b/changeset-description]
+         [diff.hunk|@@ -1,1 +1,3 @@]
+         [diff.deleted|-A0]
+         [diff.inserted|+A1]
+         [diff.inserted|+]
+         [diff.inserted|+Better commit message]
+  
+         [diff.diffline|diff -r 471f378eab4c -r 4ae3a4151de9 A0]
+         [diff.file_a|--- a/A0	Thu Jan 01 00:00:00 1970 +0000]
+         [diff.file_b|+++ b/A0	Thu Jan 01 00:00:00 1970 +0000]
+         [diff.hunk|@@ -1,1 +1,2 @@]
+          A0
+         [diff.inserted|+42]
+  
+  
 
   $ hg obslog --no-graph --patch 4ae3a4151de9
   4ae3a4151de9 (3) A1
   471f378eab4c (1) A0
     rewritten(description, content) as 4ae3a4151de9 by test (Thu Jan 01 00:00:00 1970 +0000)
-      --- a/471f378eab4c-changeset-description	
-      +++ b/4ae3a4151de9-changeset-description	
+      diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description
+      --- a/changeset-description
+      +++ b/changeset-description
       @@ -1,1 +1,3 @@
       -A0
       +A1
@@ -138,8 +162,9 @@
   $ hg obslog --hidden --patch 471f378eab4c
   x  471f378eab4c (1) A0
        rewritten(description, content) as 4ae3a4151de9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/4ae3a4151de9-changeset-description
+         diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,3 @@
          -A0
          +A1
@@ -826,8 +851,9 @@
   $ hg obslog --hidden 471f378eab4c --patch
   x  471f378eab4c (1) A0
        rewritten(description, content) as eb5a0daa2192 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/eb5a0daa2192-changeset-description
+         diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +C0
@@ -849,8 +875,9 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description, content) as eb5a0daa2192 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/eb5a0daa2192-changeset-description
+         diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +C0
@@ -879,8 +906,9 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description, content) as eb5a0daa2192 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/eb5a0daa2192-changeset-description
+         diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +C0
@@ -903,8 +931,9 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description, content) as eb5a0daa2192 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/eb5a0daa2192-changeset-description
+         diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +C0
@@ -979,8 +1008,6 @@
   working directory parent is obsolete! (471f378eab4c)
   (use 'hg evolve' to update to its successor: eb5a0daa2192)
   $ hg update 0dec01379d3b
-  working directory parent is obsolete! (471f378eab4c)
-  (use 'hg evolve' to update to its successor: eb5a0daa2192)
   abort: hidden revision '0dec01379d3b'!
   (use --hidden to access hidden revisions; successor: eb5a0daa2192)
   [255]
@@ -1060,15 +1087,17 @@
   $ hg obslog --hidden 471f378eab4c --patch
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1083,15 +1112,17 @@
   |/
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1142,15 +1173,17 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1165,15 +1198,17 @@
   |/
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1186,15 +1221,17 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1208,15 +1245,17 @@
   |/
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1231,15 +1270,17 @@
   |/
   x  471f378eab4c (1) A0
        rewritten(description) as 65b757b745b9 by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/65b757b745b9-changeset-description
+         diff -r 471f378eab4c -r 65b757b745b9 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A2
   
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1
@@ -1384,8 +1425,9 @@
   |\
   x |  471f378eab4c (1) A0
    /     rewritten(description, content) as eb5a0daa2192 by test (*) (glob)
-  |        --- a/471f378eab4c-changeset-description
-  |        +++ b/eb5a0daa2192-changeset-description
+  |        diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
+  |        --- a/changeset-description
+  |        +++ b/changeset-description
   |        @@ -1,1 +1,1 @@
   |        -A0
   |        +C0
@@ -1403,8 +1445,9 @@
   |
   x  0dec01379d3b (2) B0
        rewritten(description) as b7ea6d14e664 by test (*) (glob)
-         --- a/0dec01379d3b-changeset-description
-         +++ b/b7ea6d14e664-changeset-description
+         diff -r 0dec01379d3b -r b7ea6d14e664 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -B0
          +B1
@@ -1416,8 +1459,9 @@
   |\
   x |  471f378eab4c (1) A0
    /     rewritten(description, content) as eb5a0daa2192 by test (*) (glob)
-  |        --- a/471f378eab4c-changeset-description
-  |        +++ b/eb5a0daa2192-changeset-description
+  |        diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
+  |        --- a/changeset-description
+  |        +++ b/changeset-description
   |        @@ -1,1 +1,1 @@
   |        -A0
   |        +C0
@@ -1435,8 +1479,9 @@
   |
   x  0dec01379d3b (2) B0
        rewritten(description) as b7ea6d14e664 by test (*) (glob)
-         --- a/0dec01379d3b-changeset-description
-         +++ b/b7ea6d14e664-changeset-description
+         diff -r 0dec01379d3b -r b7ea6d14e664 changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -B0
          +B1
@@ -1531,12 +1576,8 @@
   (use 'hg evolve' to update to its successor: eb5a0daa2192)
   $ hg update 0dec01379d3b
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  working directory parent is obsolete! (0dec01379d3b)
-  (use 'hg evolve' to update to its successor: eb5a0daa2192)
   $ hg update --hidden 'desc(B0)'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  working directory parent is obsolete! (0dec01379d3b)
-  (use 'hg evolve' to update to its successor: eb5a0daa2192)
 
 Test output with pushed and pulled obs markers
 ==============================================
@@ -1613,8 +1654,9 @@
   |
   x  fdf9bde5129a (2) A1
   |    rewritten(description) as 7a230b46bf61 by test (*) (glob)
-  |      --- a/fdf9bde5129a-changeset-description
-  |      +++ b/7a230b46bf61-changeset-description
+  |      diff -r fdf9bde5129a -r 7a230b46bf61 changeset-description
+  |      --- a/changeset-description
+  |      +++ b/changeset-description
   |      @@ -1,1 +1,1 @@
   |      -A1
   |      +A2
@@ -1622,8 +1664,9 @@
   |
   x  471f378eab4c (1) A0
        rewritten(description) as fdf9bde5129a by test (*) (glob)
-         --- a/471f378eab4c-changeset-description
-         +++ b/fdf9bde5129a-changeset-description
+         diff -r 471f378eab4c -r fdf9bde5129a changeset-description
+         --- a/changeset-description
+         +++ b/changeset-description
          @@ -1,1 +1,1 @@
          -A0
          +A1