diff -r 5ca297e78f2c -r f8677cb11dcb tests/test-evolve-obshistory.t
--- a/tests/test-evolve-obshistory.t	Fri Jun 08 22:52:52 2018 +0530
+++ b/tests/test-evolve-obshistory.t	Fri Jun 08 22:52:53 2018 +0530
@@ -48,17 +48,23 @@
   > 
   > Better commit message"
   $ hg log --hidden -G
-  @  changeset:   2:4ae3a4151de9
+  @  changeset:   3:4ae3a4151de9
   |  tag:         tip
   |  parent:      0:ea207398892e
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     A1
   |
+  | x  changeset:   2:f137d23bb3e1
+  | |  user:        test
+  | |  date:        Thu Jan 01 00:00:00 1970 +0000
+  | |  obsolete:    pruned
+  | |  summary:     temporary amend commit for 471f378eab4c
+  | |
   | x  changeset:   1:471f378eab4c
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    rewritten using amend as 2:4ae3a4151de9
+  |    obsolete:    rewritten as 4ae3a4151de9
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -69,10 +75,10 @@
 Actual test
 -----------
   $ hg obslog --patch 4ae3a4151de9
-  @  4ae3a4151de9 (2) A1
+  @  4ae3a4151de9 (3) A1
   |
   x  471f378eab4c (1) A0
-       rewritten(description, content) as 4ae3a4151de9 using amend by test (*) (glob)
+       rewritten(description, content) as 4ae3a4151de9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -91,10 +97,10 @@
   
   
   $ hg obslog --patch --color debug
-  @  [evolve.node|4ae3a4151de9] [evolve.rev|(2)] [evolve.short_description|A1]
+  @  [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] using [evolve.operation|amend] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
+       [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]
@@ -114,9 +120,9 @@
   
 
   $ hg obslog --no-graph --patch 4ae3a4151de9
-  4ae3a4151de9 (2) A1
+  4ae3a4151de9 (3) A1
   471f378eab4c (1) A0
-    rewritten(description, content) as 4ae3a4151de9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+    rewritten(description, content) as 4ae3a4151de9 by test (Thu Jan 01 00:00:00 1970 +0000)
       diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description
       --- a/changeset-description
       +++ b/changeset-description
@@ -144,7 +150,7 @@
       {
           "markers": [],
           "node": "4ae3a4151de9",
-          "rev": 2,
+          "rev": 3,
           "shortdescription": "A1"
       },
       {
@@ -158,7 +164,6 @@
                       "description",
                       "content"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "4ae3a4151de9"
                   ],
@@ -173,7 +178,7 @@
   ]
   $ hg obslog --hidden --patch 471f378eab4c
   x  471f378eab4c (1) A0
-       rewritten(description, content) as 4ae3a4151de9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description, content) as 4ae3a4151de9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 4ae3a4151de9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -204,7 +209,6 @@
                       *, (glob)
                       "content"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "4ae3a4151de9"
                   ],
@@ -263,7 +267,7 @@
   |  tag:         tip
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
-  |  obsolete:    pruned using prune
+  |  obsolete:    pruned
   |  summary:     B0
   |
   @  changeset:   1:471f378eab4c
@@ -282,7 +286,7 @@
 
   $ hg obslog 'desc(B0)' --hidden --patch
   x  0dec01379d3b (2) B0
-       pruned using prune by test (Thu Jan 01 00:00:00 1970 +0000)
+       pruned by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, no successors)
   
   $ hg obslog 'desc(B0)' --hidden --no-graph -Tjson | python -m json.tool
@@ -294,7 +298,6 @@
                       *, (glob)
                       0 (glob)
                   ],
-                  "operation": "prune",
                   "user": "test",
                   "verb": "pruned"
               }
@@ -361,6 +364,7 @@
   > y
   > y
   > EOF
+  current hg version does not support storing note in obsmarker
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   adding a
   adding b
@@ -404,7 +408,7 @@
   | x  changeset:   1:471597cad322
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    split using split as 2:337fec4d2edc, 3:f257fde29c7a
+  |    obsolete:    split as 337fec4d2edc, f257fde29c7a
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -418,7 +422,7 @@
 Check that debugobshistory on splitted commit show both targets
   $ hg obslog 471597cad322 --hidden --patch
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -436,7 +440,6 @@
                       "content"
                   ],
                   "note": "testing split",
-                  "operation": "split",
                   "succnodes": [
                       "337fec4d2edc",
                       "f257fde29c7a"
@@ -456,7 +459,7 @@
   o  337fec4d2edc (2) A0
   |
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -467,7 +470,7 @@
   | @  f257fde29c7a (3) A0
   |/
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -477,7 +480,7 @@
   @  f257fde29c7a (3) A0
   |
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -488,7 +491,7 @@
   | @  f257fde29c7a (3) A0
   |/
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -499,7 +502,7 @@
   | @  f257fde29c7a (3) A0
   |/
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -511,7 +514,7 @@
   | @  f257fde29c7a (3) A0
   |/
   x  471597cad322 (1) A0
-       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 337fec4d2edc, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          note: testing split
          (No patch available, too many successors (2))
   
@@ -667,7 +670,7 @@
   | x  changeset:   1:de7290d8b885
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    split using split as 2:337fec4d2edc, 3:f257fde29c7a, 4:1ae8bc733a14, 5:c7f044602e9b
+  |    obsolete:    split as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -680,7 +683,7 @@
 
   $ hg obslog de7290d8b885 --hidden --patch
   x  de7290d8b885 (1) A0
-       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, too many successors (4))
   
   $ hg obslog de7290d8b885 --hidden --all --patch
@@ -693,7 +696,7 @@
   | o  f257fde29c7a (3) A0
   |/
   x  de7290d8b885 (1) A0
-       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, too many successors (4))
   
   $ hg obslog de7290d8b885 --hidden --no-graph -Tjson | python -m json.tool
@@ -709,7 +712,6 @@
                       "parent",
                       "content"
                   ],
-                  "operation": "split",
                   "succnodes": [
                       "1ae8bc733a14",
                       "337fec4d2edc",
@@ -729,7 +731,7 @@
   @  c7f044602e9b (5) A0
   |
   x  de7290d8b885 (1) A0
-       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, too many successors (4))
   
   $ hg obslog c7f044602e9b --no-graph -Tjson | python -m json.tool
@@ -751,7 +753,6 @@
                       "parent",
                       "content"
                   ],
-                  "operation": "split",
                   "succnodes": [
                       "1ae8bc733a14",
                       "337fec4d2edc",
@@ -778,7 +779,7 @@
   | o  f257fde29c7a (3) A0
   |/
   x  de7290d8b885 (1) A0
-       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, too many successors (4))
   
   $ hg obslog 5 --all --patch
@@ -791,7 +792,7 @@
   | o  f257fde29c7a (3) A0
   |/
   x  de7290d8b885 (1) A0
-       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a using split by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(parent, content) as 1ae8bc733a14, 337fec4d2edc, c7f044602e9b, f257fde29c7a by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, too many successors (4))
   
   $ hg update de7290d8b885
@@ -845,13 +846,13 @@
   | x  changeset:   2:0dec01379d3b
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
-  | |  obsolete:    rewritten using fold as 3:eb5a0daa2192
+  | |  obsolete:    rewritten as eb5a0daa2192
   | |  summary:     B0
   | |
   | x  changeset:   1:471f378eab4c
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    rewritten using fold as 3:eb5a0daa2192
+  |    obsolete:    rewritten as eb5a0daa2192
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -866,7 +867,7 @@
 the revision with the target
   $ hg obslog --hidden 471f378eab4c --patch
   x  471f378eab4c (1) A0
-       rewritten(description, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -886,11 +887,11 @@
   @    eb5a0daa2192 (3) C0
   |\
   x |  0dec01379d3b (2) B0
-   /     rewritten(description, parent, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+   /     rewritten(description, parent, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |        (No patch available, changesets rebased)
   |
   x  471f378eab4c (1) A0
-       rewritten(description, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -909,7 +910,7 @@
 the revision with the target
   $ hg obslog --hidden 0dec01379d3b --patch
   x  0dec01379d3b (2) B0
-       rewritten(description, parent, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description, parent, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, changesets rebased)
   
 Check that with all option, all changesets are shown
@@ -917,11 +918,11 @@
   @    eb5a0daa2192 (3) C0
   |\
   x |  0dec01379d3b (2) B0
-   /     rewritten(description, parent, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+   /     rewritten(description, parent, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |        (No patch available, changesets rebased)
   |
   x  471f378eab4c (1) A0
-       rewritten(description, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -942,11 +943,11 @@
   @    eb5a0daa2192 (3) C0
   |\
   x |  0dec01379d3b (2) B0
-   /     rewritten(description, parent, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+   /     rewritten(description, parent, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |        (No patch available, changesets rebased)
   |
   x  471f378eab4c (1) A0
-       rewritten(description, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -977,10 +978,9 @@
                       0 (glob)
                   ],
                   "effect": [
-                      "description",
+                      *, (glob)
                       "content"
                   ],
-                  "operation": "fold",
                   "succnodes": [
                       "eb5a0daa2192"
                   ],
@@ -996,7 +996,7 @@
           "markers": [
               {
                   "date": [
-                      *, (glob)
+                      0.0,
                       0 (glob)
                   ],
                   "effect": [
@@ -1004,7 +1004,6 @@
                       "parent",
                       "content"
                   ],
-                  "operation": "fold",
                   "succnodes": [
                       "eb5a0daa2192"
                   ],
@@ -1056,7 +1055,7 @@
   | x  changeset:   1:471f378eab4c
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    reworded using amend as 2:fdf9bde5129a
+  |    obsolete:    reworded as fdf9bde5129a
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -1069,28 +1068,28 @@
   working directory parent is obsolete! (471f378eab4c)
   (use 'hg evolve' to update to its successor: fdf9bde5129a)
   $ hg amend -m "A2"
-  2 new content-divergent changesets
+  2 new divergent changesets
   $ hg log --hidden -G
   @  changeset:   3:65b757b745b9
   |  tag:         tip
   |  parent:      0:ea207398892e
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
-  |  instability: content-divergent
+  |  trouble:     divergent
   |  summary:     A2
   |
   | o  changeset:   2:fdf9bde5129a
   |/   parent:      0:ea207398892e
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    instability: content-divergent
+  |    trouble:     divergent
   |    summary:     A1
   |
   | x  changeset:   1:471f378eab4c
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    reworded using amend as 2:fdf9bde5129a
-  |    obsolete:    reworded using amend as 3:65b757b745b9
+  |    obsolete:    reworded as fdf9bde5129a
+  |    obsolete:    reworded as 65b757b745b9
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -1104,7 +1103,7 @@
 Check that debugobshistory on the divergent revision show both destinations
   $ hg obslog --hidden 471f378eab4c --patch
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1112,7 +1111,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1129,7 +1128,7 @@
   | o  fdf9bde5129a (2) A1
   |/
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1137,7 +1136,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1158,7 +1157,6 @@
                   "effect": [
                       "description"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "65b757b745b9"
                   ],
@@ -1173,7 +1171,6 @@
                   "effect": [
                       "description"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "fdf9bde5129a"
                   ],
@@ -1192,7 +1189,7 @@
   o  fdf9bde5129a (2) A1
   |
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1200,7 +1197,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1217,7 +1214,7 @@
   | o  fdf9bde5129a (2) A1
   |/
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1225,7 +1222,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1240,7 +1237,7 @@
   @  65b757b745b9 (3) A2
   |
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1248,7 +1245,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1264,7 +1261,7 @@
   | o  fdf9bde5129a (2) A1
   |/
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1272,7 +1269,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1289,7 +1286,7 @@
   | o  fdf9bde5129a (2) A1
   |/
   x  471f378eab4c (1) A0
-       rewritten(description) as 65b757b745b9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as 65b757b745b9 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r 65b757b745b9 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1297,7 +1294,7 @@
          -A0
          +A2
   
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1324,7 +1321,6 @@
                   "effect": [
                       "description"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "65b757b745b9"
                   ],
@@ -1339,7 +1335,6 @@
                   "effect": [
                       "description"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "fdf9bde5129a"
                   ],
@@ -1390,7 +1385,7 @@
   | x  changeset:   2:0dec01379d3b
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    reworded using amend as 3:b7ea6d14e664
+  |    obsolete:    reworded as b7ea6d14e664
   |    summary:     B0
   |
   o  changeset:   1:471f378eab4c
@@ -1418,19 +1413,19 @@
   | |  parent:      1:471f378eab4c
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
-  | |  obsolete:    rewritten using fold as 4:eb5a0daa2192
+  | |  obsolete:    rewritten as eb5a0daa2192
   | |  summary:     B1
   | |
   | | x  changeset:   2:0dec01379d3b
   | |/   user:        test
   | |    date:        Thu Jan 01 00:00:00 1970 +0000
-  | |    obsolete:    reworded using amend as 3:b7ea6d14e664
+  | |    obsolete:    reworded as b7ea6d14e664
   | |    summary:     B0
   | |
   | x  changeset:   1:471f378eab4c
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    rewritten using fold as 4:eb5a0daa2192
+  |    obsolete:    rewritten as eb5a0daa2192
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -1446,7 +1441,7 @@
   @    eb5a0daa2192 (4) C0
   |\
   x |  471f378eab4c (1) A0
-   /     rewritten(description, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+   /     rewritten(description, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |        diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
   |        --- a/changeset-description
   |        +++ b/changeset-description
@@ -1462,11 +1457,11 @@
   |
   |
   x  b7ea6d14e664 (3) B1
-  |    rewritten(description, parent, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  |    rewritten(description, parent, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |      (No patch available, changesets rebased)
   |
   x  0dec01379d3b (2) B0
-       rewritten(description) as b7ea6d14e664 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as b7ea6d14e664 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 0dec01379d3b -r b7ea6d14e664 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1480,7 +1475,7 @@
   @    eb5a0daa2192 (4) C0
   |\
   x |  471f378eab4c (1) A0
-   /     rewritten(description, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+   /     rewritten(description, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |        diff -r 471f378eab4c -r eb5a0daa2192 changeset-description
   |        --- a/changeset-description
   |        +++ b/changeset-description
@@ -1496,11 +1491,11 @@
   |
   |
   x  b7ea6d14e664 (3) B1
-  |    rewritten(description, parent, content) as eb5a0daa2192 using fold by test (Thu Jan 01 00:00:00 1970 +0000)
+  |    rewritten(description, parent, content) as eb5a0daa2192 by test (Thu Jan 01 00:00:00 1970 +0000)
   |      (No patch available, changesets rebased)
   |
   x  0dec01379d3b (2) B0
-       rewritten(description) as b7ea6d14e664 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as b7ea6d14e664 by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 0dec01379d3b -r b7ea6d14e664 changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1529,7 +1524,6 @@
                       *, (glob)
                       "content"
                   ],
-                  "operation": "fold",
                   "succnodes": [
                       "eb5a0daa2192"
                   ],
@@ -1545,13 +1539,12 @@
           "markers": [
               {
                   "date": [
-                      *, (glob)
+                      0.0,
                       0 (glob)
                   ],
                   "effect": [
                       "description"
                   ],
-                  "operation": "amend",
                   "succnodes": [
                       "b7ea6d14e664"
                   ],
@@ -1567,14 +1560,13 @@
           "markers": [
               {
                   "date": [
-                      *, (glob)
+                      0.0,
                       0 (glob)
                   ],
                   "effect": [
                       "description",
                       "content"
                   ],
-                  "operation": "fold",
                   "succnodes": [
                       "eb5a0daa2192"
                   ],
@@ -1657,13 +1649,13 @@
   |/   parent:      0:ea207398892e
   |    user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    reworded using amend as 3:7a230b46bf61
+  |    obsolete:    reworded as 7a230b46bf61
   |    summary:     A1
   |
   | x  changeset:   1:471f378eab4c
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
-  |    obsolete:    reworded using amend as 2:fdf9bde5129a
+  |    obsolete:    reworded as fdf9bde5129a
   |    summary:     A0
   |
   o  changeset:   0:ea207398892e
@@ -1678,7 +1670,7 @@
   @  7a230b46bf61 (3) A2
   |
   x  fdf9bde5129a (2) A1
-  |    rewritten(description) as 7a230b46bf61 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+  |    rewritten(description) as 7a230b46bf61 by test (Thu Jan 01 00:00:00 1970 +0000)
   |      diff -r fdf9bde5129a -r 7a230b46bf61 changeset-description
   |      --- a/changeset-description
   |      +++ b/changeset-description
@@ -1688,7 +1680,7 @@
   |
   |
   x  471f378eab4c (1) A0
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          diff -r 471f378eab4c -r fdf9bde5129a changeset-description
          --- a/changeset-description
          +++ b/changeset-description
@@ -1707,7 +1699,6 @@
   added 1 changesets with 0 changes to 1 files (+1 heads)
   2 new obsolescence markers
   obsoleted 1 changesets
-  new changesets 7a230b46bf61
   (run 'hg heads' to see heads, 'hg merge' to merge)
   working directory parent is obsolete! (471f378eab4c)
   (use 'hg evolve' to update to its successor: 7a230b46bf61)
@@ -1717,21 +1708,21 @@
   o  7a230b46bf61 (2) A2
   |
   x  fdf9bde5129a
-  |    rewritten(description) as 7a230b46bf61 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+  |    rewritten(description) as 7a230b46bf61 by test (Thu Jan 01 00:00:00 1970 +0000)
   |      (No patch available, context is not local)
   |
   @  471f378eab4c (1) A0
-       rewritten(description) as fdf9bde5129a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
+       rewritten(description) as fdf9bde5129a by test (Thu Jan 01 00:00:00 1970 +0000)
          (No patch available, successor is unknown locally)
   
   $ hg obslog 7a230b46bf61 --color=debug --patch
   o  [evolve.node|7a230b46bf61] [evolve.rev|(2)] [evolve.short_description|A2]
   |
   x  [evolve.node evolve.missing_change_ctx|fdf9bde5129a]
-  |    [evolve.verb|rewritten](description) as [evolve.node|7a230b46bf61] using [evolve.operation|amend] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
+  |    [evolve.verb|rewritten](description) as [evolve.node|7a230b46bf61] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
   |      (No patch available, context is not local)
   |
   @  [evolve.node|471f378eab4c] [evolve.rev|(1)] [evolve.short_description|A0]
-       [evolve.verb|rewritten](description) as [evolve.node|fdf9bde5129a] using [evolve.operation|amend] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
+       [evolve.verb|rewritten](description) as [evolve.node|fdf9bde5129a] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
          (No patch available, successor is unknown locally)