--- a/CHANGELOG	Thu Dec 28 03:12:54 2017 +0530
+++ b/CHANGELOG	Wed Dec 27 05:01:30 2017 +0530
@@ -5,6 +5,7 @@
 -------------------
 
   * fix `hg prev` behavior on obsolete changesets
+  * no longer issue "obsolete working copy" message during no-op
 
 topic (0.6.1)
 

--- a/hgext3rd/evolve/__init__.py	Thu Dec 28 03:12:54 2017 +0530
+++ b/hgext3rd/evolve/__init__.py	Wed Dec 27 05:01:30 2017 +0530
@@ -684,12 +684,14 @@
 
 # This section take care of issue warning to the user when troubles appear
 
-def _warnobsoletewc(ui, repo):
+def _warnobsoletewc(ui, repo, prevnode=None, wasobs=None):
     rev = repo['.']
 
     if not rev.obsolete():
         return
 
+    if rev.node() == prevnode and wasobs:
+        return
     msg = _("working directory parent is obsolete! (%s)\n")
     shortnode = node.short(rev.node())
 
@@ -763,8 +765,12 @@
 @eh.wrapcommand("pull")
 def wrapmayobsoletewc(origfn, ui, repo, *args, **opts):
     """Warn that the working directory parent is an obsolete changeset"""
+    ctx = repo['.']
+    node = ctx.node()
+    isobs = ctx.obsolete()
+
     def warnobsolete():
-        _warnobsoletewc(ui, repo)
+        _warnobsoletewc(ui, repo, node, isobs)
     wlock = None
     try:
         wlock = repo.wlock()

--- a/tests/test-evolve-obshistory.t	Thu Dec 28 03:12:54 2017 +0530
+++ b/tests/test-evolve-obshistory.t	Wed Dec 27 05:01:30 2017 +0530
@@ -972,8 +972,6 @@
   working directory parent is obsolete!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-  working directory parent is obsolete!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]
@@ -1524,12 +1522,8 @@
   (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-  working directory parent is obsolete!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-  working directory parent is obsolete!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
 ==============================================

--- a/tests/test-tutorial.t	Thu Dec 28 03:12:54 2017 +0530
+++ b/tests/test-tutorial.t	Wed Dec 27 05:01:30 2017 +0530
@@ -1514,8 +1514,6 @@
   pulling from $TESTTMP/local (glob)
   searching for changes
   no changes found
-  working directory parent is obsolete! (bf1b0d202029)
-  (use 'hg evolve' to update to its successor: ee942144f952)
 
 Now let's see where we are, and update to the successor.