diff -r 168dfc839eca -r f6e0cfca1bf0 tests/test-exchange-A1.t
--- a/tests/test-exchange-A1.t	Thu Aug 14 15:30:04 2014 -0700
+++ b/tests/test-exchange-A1.t	Fri Aug 15 16:54:32 2014 -0700
@@ -44,7 +44,7 @@
   o  a9bdc8b26820 (public): O
   
   $ hg debugobsolete
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   $ cd ..
   $ cd ..
 
@@ -62,7 +62,7 @@
   # testing echange of "A" (f5bc6836db60)
   ## initial state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing "A" from main to pushdest
@@ -74,13 +74,13 @@
   added 1 changesets with 1 changes to 1 files
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (62 bytes)
+  OBSEXC: pushing 1 obsolescence markers (65 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling "f5bc6836db60" from main into pulldest
   pulling from main
@@ -90,17 +90,17 @@
   adding file changes
   added 1 changesets with 1 changes to 1 files
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
 
 
 
@@ -112,7 +112,7 @@
   ## Running testcase A.1.1.b
   ## initial state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing from main to pushdest
@@ -124,13 +124,13 @@
   added 1 changesets with 1 changes to 1 files
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (62 bytes)
+  OBSEXC: pushing 1 obsolescence markers (65 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling from main into pulldest
   pulling from main
@@ -140,17 +140,17 @@
   adding file changes
   added 1 changesets with 1 changes to 1 files
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
 
 
 
@@ -203,7 +203,7 @@
   
   $ hg debugobsolete aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(A)'`
   $ hg debugobsolete
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   $ cd ..
   $ cd ..
 
@@ -221,7 +221,7 @@
   # testing echange of "B" (f6fbb35d8ac9)
   ## initial state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing "B" from main to pushdest
@@ -233,13 +233,13 @@
   added 2 changesets with 2 changes to 2 files
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (62 bytes)
+  OBSEXC: pushing 1 obsolescence markers (65 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling "f6fbb35d8ac9" from main into pulldest
   pulling from main
@@ -249,17 +249,17 @@
   adding file changes
   added 2 changesets with 2 changes to 2 files
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
 
 Variant b: push
 ---------------
@@ -268,7 +268,7 @@
   ## Running testcase A.1.2.b
   ## initial state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing from main to pushdest
@@ -280,13 +280,13 @@
   added 2 changesets with 2 changes to 2 files
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (62 bytes)
+  OBSEXC: pushing 1 obsolescence markers (65 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling from main into pulldest
   pulling from main
@@ -296,14 +296,14 @@
   adding file changes
   added 2 changesets with 2 changes to 2 files
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa f5bc6836db60e308a17ba08bf050154ba9c4fad7 0 {'date': '0 0', 'user': 'test'}