Rev 420: Minor improvement. in http://bazaar.launchpad.net/~jameinel/loggerhead/history_db

[John Arbash Meinel]

At http://bazaar.launchpad.net/~jameinel/loggerhead/history_db

------------------------------------------------------------
revno: 420
revision-id: john at arbash-meinel.com-20100504153703-d2cpu7crcm4eit3s
parent: john at arbash-meinel.com-20100504153632-c013i1vo60ceue38
committer: John Arbash Meinel <john at arbash-meinel.com>
branch nick: history_db
timestamp: Tue 2010-05-04 10:37:03 -0500
message:
  Minor improvement.
-------------- next part --------------
=== modified file 'loggerhead/history.py'
--- a/loggerhead/history.py	2010-05-04 15:36:32 +0000
+++ b/loggerhead/history.py	2010-05-04 15:37:03 +0000
@@ -357,7 +357,8 @@
             self._revno_revid_cache.set(revid, revno_str)
             revno_map[revid] = revno_str
             ghosts.discard(revids)
-        revno_map.update([(n, 'unknown') for n in ghosts])
+        if ghosts:
+            revno_map.update([(n, 'unknown') for n in ghosts])
         return revno_map
 
     def get_revid_for_revno(self, revno_str):