--- a/hgext/evolve.py	Fri Aug 29 16:13:01 2014 +0200
+++ b/hgext/evolve.py	Fri Aug 29 16:13:19 2014 +0200
@@ -2494,7 +2494,33 @@
 
 @eh.uisetup
 def addgetbundleargs(self):
-    gboptsmap['evo_obscommon'] = 'plain'
+    gboptsmap['evo_obscommon'] = 'nodes'
+
+@eh.wrapfunction(exchange, '_pullbundle2extraprepare')
+def _addobscommontob2pull(orig, pullop, kwargs):
+    ret = orig(pullop, kwargs)
+    if 'obsmarkers' in kwargs and pullop.remote.capable('_evoext_getbundle_obscommon'):
+        boundaries = _buildpullobsmarkersboundaries(pullop)
+        common = boundaries['common']
+        if common != [nullid]:
+            kwargs['evo_obscommon'] = common
+    return ret
+
+@eh.wrapfunction(exchange, '_getbundleobsmarkerpart')
+def _getbundleobsmarkerpart(orig, bundler, repo, source, heads=None, common=None,
+                            bundlecaps=None, **kwargs):
+    if 'evo_obscommon' not in kwargs:
+        return orig(bundler, repo, source, heads, common, bundlecaps, **kwargs)
+
+    if kwargs.get('obsmarkers', False):
+        if heads is None:
+            heads = repo.heads()
+        obscommon = kwargs.get('evo_obscommon', ())
+        obsset = repo.set('::%ln - ::%ln', heads, obscommon)
+        subset = [c.node() for c in obsset]
+        markers = repo.obsstore.relevantmarkers(subset)
+        exchange.buildobsmarkerspart(bundler, markers)
+
 
 @eh.wrapfunction(exchange, '_pullobsolete')
 def _pullobsolete(orig, pullop):