diff -r 9af0e2b0bdd7 -r 537fd9a86c06 tests/test-evolve-obshistory-lots-of-splits.t
--- a/tests/test-evolve-obshistory-lots-of-splits.t	Fri Aug 03 00:19:47 2018 +0200
+++ b/tests/test-evolve-obshistory-lots-of-splits.t	Fri Aug 03 00:22:50 2018 +0200
@@ -149,7 +149,7 @@
   | 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
@@ -162,7 +162,7 @@
 
   $ 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
@@ -175,7 +175,7 @@
   | 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
@@ -191,7 +191,6 @@
                       "parent",
                       "content"
                   ],
-                  "operation": "split",
                   "succnodes": [
                       "1ae8bc733a14",
                       "337fec4d2edc",
@@ -211,7 +210,7 @@
   @  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
@@ -233,7 +232,6 @@
                       "parent",
                       "content"
                   ],
-                  "operation": "split",
                   "succnodes": [
                       "1ae8bc733a14",
                       "337fec4d2edc",
@@ -260,7 +258,7 @@
   | 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
@@ -273,7 +271,7 @@
   | 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