--- a/hgext3rd/evolve/obshistory.py	Sat Dec 28 23:20:05 2019 +0530
+++ b/hgext3rd/evolve/obshistory.py	Thu Nov 28 11:37:56 2019 +0700
@@ -834,30 +834,6 @@
         return None
     return _prepare_hunk(lines)
 
-def _getobsfate(successorssets):
-    """ Compute a changeset obsolescence fate based on his successorssets.
-    Successors can be the tipmost ones or the immediate ones.
-    Returns one fate in the following list:
-    - pruned
-    - diverged
-    - superseed
-    - superseed_split
-    """
-
-    if len(successorssets) == 0:
-        # The commit has been pruned
-        return b'pruned'
-    elif len(successorssets) > 1:
-        return b'diverged'
-    else:
-        # No divergence, only one set of successors
-        successors = successorssets[0]
-
-        if len(successors) == 1:
-            return b'superseed'
-        else:
-            return b'superseed_split'
-
 def _getobsfateandsuccs(repo, revnode, successorssets=None):
     """ Return a tuple containing:
     - the reason a revision is obsolete (diverged, pruned or superseed)
@@ -867,7 +843,7 @@
     if successorssets is None:
         successorssets = obsutil.successorssets(repo, revnode)
 
-    fate = _getobsfate(successorssets)
+    fate = obsutil._getobsfate(successorssets)
 
     # Apply node.short if we have no divergence
     if len(successorssets) == 1: