old_contents: """macfs - Pure Python module designed to be backward compatible with
  macfs and MACFS.
  """
  import sys
  
  # First step: ensure we also emulate the MACFS module, which contained
  # all the constants
  
  sys.modules['MACFS'] = sys.modules[__name__]
  
  # Import all those constants
  from Carbon.Files import *
  from Carbon.Folders import *
  # Another method:
  from Carbon.Folder import FindFolder
  
  # For some obscure historical reason these are here too:
  READ = 1
  WRITE = 2
  smAllScripts = -3
  
  
  import Carbon.File
  # The old name of the error object:
  error = Carbon.File.Error
  
  class FSSpec(Carbon.File.FSSpec):
  	def as_fsref(self):
  		return FSRef(self)
  		
  	def NewAlias(self, src=None):
  		return Alias(Carbon.File.NewAlias(src, self))
  		
  	def GetCreatorType(self):
  		finfo = self.FSpGetFInfo()
  		return finfo.Creator, finfo.Type
  		
  	def SetCreatorType(self, ctor, tp):
  		finfo = self.FSpGetFInfo()
  		finfo.Creator = ctor
  		finfo.Type = tp
  		self.FSpSetFInfo(finfo)
  		
  	def GetFInfo(self):
  		return self.FSpGetFInfo()
  		
  	def SetFInfo(self, info):
  		return self.FSpSetFInfo(info)
  		
  	def GetDates(self):
  		import os
  		statb = os.stat(self.as_pathname())
  		return statb.st_ctime, statb.st_mtime, 0
  	
  	def SetDates(self, *dates):
  		print "FSSpec.SetDates no longer implemented"
  	
  class FSRef(Carbon.File.FSRef):
  	def as_fsspec(self):
  		return FSSpec(self)
  	
  class Alias(Carbon.File.Alias):
  
  	def GetInfo(self, index):
  		return self.GetAliasInfo(index)
  		
  	def Update(self, *args):
  		print "Alias.Update not yet implemented"
  		
  	def Resolve(self, src=None):
  		return self.ResolveAlias(src)[1:]
  		
  from Carbon.File import FInfo
  	
  FSSpecType = FSSpec
  FSRefType = FSRef
  AliasType = Alias
  FInfoType = FInfo
  
  def ResolveAliasFile(fss, chain=1):
  	return Carbon.File.ResolveAliasFile(fss, chain)
  	
  def RawFSSpec(data):
  	return FSSpec(rawdata=data)
  	
  def RawAlias(data):
  	return Alias(rawdata=data)
  	
  def FindApplication(*args):
  	raise NotImplementedError, "FindApplication no longer implemented"
  	
  def NewAliasMinimalFromFullPath(path):
  	return Carbon.Files.NewAliasMinimalFromFullPath(path, '', '')
  	
  # Finally, install nav services
  import macfsn
new_contents: """macfs - Pure Python module designed to be backward compatible with
  macfs and MACFS.
  """
  import sys
  
  # First step: ensure we also emulate the MACFS module, which contained
  # all the constants
  
  sys.modules['MACFS'] = sys.modules[__name__]
  
  # Import all those constants
  from Carbon.Files import *
  from Carbon.Folders import *
  # Another method:
  from Carbon.Folder import FindFolder
  
  # For some obscure historical reason these are here too:
  READ = 1
  WRITE = 2
  smAllScripts = -3
  
  
  import Carbon.File
  # The old name of the error object:
  error = Carbon.File.Error
  
  class FSSpec(Carbon.File.FSSpec):
  	def as_fsref(self):
  		return FSRef(self)
  		
  	def NewAlias(self, src=None):
  		return Alias(Carbon.File.NewAlias(src, self))
  		
  	def GetCreatorType(self):
  		finfo = self.FSpGetFInfo()
  		return finfo.Creator, finfo.Type
  		
  	def SetCreatorType(self, ctor, tp):
  		finfo = self.FSpGetFInfo()
  		finfo.Creator = ctor
  		finfo.Type = tp
  		self.FSpSetFInfo(finfo)
  		
  	def GetFInfo(self):
  		return self.FSpGetFInfo()
  		
  	def SetFInfo(self, info):
  		return self.FSpSetFInfo(info)
  		
  	def GetDates(self):
  		import os
  		statb = os.stat(self.as_pathname())
  		return statb.st_ctime, statb.st_mtime, 0
  	
  	def SetDates(self, *dates):
  		print "FSSpec.SetDates no longer implemented"
  	
  class FSRef(Carbon.File.FSRef):
  	def as_fsspec(self):
  		return FSSpec(self)
  	
  class Alias(Carbon.File.Alias):
  
  	def GetInfo(self, index):
  		return self.GetAliasInfo(index)
  		
  	def Update(self, *args):
  		print "Alias.Update not yet implemented"
  		
  	def Resolve(self, src=None):
  		fss, changed = self.ResolveAlias(src)
  		return FSSpec(fss), changed
  		
  from Carbon.File import FInfo
  	
  FSSpecType = FSSpec
  FSRefType = FSRef
  AliasType = Alias
  FInfoType = FInfo
  
  def ResolveAliasFile(fss, chain=1):
  	fss, isdir, isalias = Carbon.File.ResolveAliasFile(fss, chain)
  	return FSSpec(fss), isdir, isalias
  	
  def RawFSSpec(data):
  	return FSSpec(rawdata=data)
  	
  def RawAlias(data):
  	return Alias(rawdata=data)
  	
  def FindApplication(*args):
  	raise NotImplementedError, "FindApplication no longer implemented"
  	
  def NewAliasMinimalFromFullPath(path):
  	return Alias(Carbon.File.NewAliasMinimalFromFullPath(path, '', ''))
  	
  # Finally, install nav services
  import macfsn
subject: Return the macfs variation for FSSpec and Alias, not the underlying Carbon.File version, so the old method names work.