133             seen[f] = 1

   133             seen[f] = 1

   134             yield f

   134             yield f

   135 

   135 

   136 class Abort(Exception):

   136 class Abort(Exception):

   137     """Raised if a command needs to print an error and exit."""

   137     """Raised if a command needs to print an error and exit."""

   138 

   141 

   139 def always(fn): return True

   142 def always(fn): return True

   140 def never(fn): return False

   143 def never(fn): return False

   141 

   144 

   142 def patkind(name, dflt_pat='glob'):

   145 def patkind(name, dflt_pat='glob'):