outgoing: display info about secret changets while no sharable changeset found

mercurial/hg.py

@@ -511,6 +511,10 def _outgoing(ui, repo, dest, opts):
                                             force=opts.get('force'))
     o = outgoing.missing
     if not o:
+        if outgoing.excluded:
+            repo.ui.status(_("no outgoing changes but %i secret changesets\n")
+                           % len(outgoing.excluded))
+        else:
         ui.status(_("no changes found\n"))
         return None
     return o

tests/test-incoming-outgoing.t

@@ -399,6 +399,15 test outgoing
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     13
   
+test outgoing with secret changesets
+
+  $ hg -R test-dev phase --force --secret 9
+  $ hg -R test-dev outgoing test
+  comparing with test
+  searching for changes
+  no outgoing changes but 5 secret changesets
+  [1]
+  $ hg -R test-dev phase --draft -r 'head()'
 
 limit to 3 changesets