mercurial/dirstate.py

--- a/mercurial/dirstate.py	Tue Sep 02 15:12:50 2008 +0200
+++ b/mercurial/dirstate.py	Tue Sep 02 17:32:07 2008 +0200
@@ -101,6 +101,7 @@
 
     def _join(self, f):
         # much faster than os.path.join()
+        # it's safe because f is always a relative path
         return self._rootdir + f
 
     def flagfunc(self, fallback):