958                     m2 = t2._dirs[d]

   958                     m2 = t2._dirs[d]

   959                     _filesnotin(m1, m2)

   959                     _filesnotin(m1, m2)

   960                 else:

   960                 else:

   961                     files.update(m1.iterkeys())

   961                     files.update(m1.iterkeys())

   962 

   962 

   964                 if fn not in t2._files:

   964                 if fn not in t2._files:

   965                     files.add(t1._subpath(fn))

   965                     files.add(t1._subpath(fn))

   966 

   966 

   967         _filesnotin(self, m2)

   967         _filesnotin(self, m2)

   968         return files

   968         return files