old_contents: from __future__ import print_function
  from ed2d.cmdargs import CmdArgs
  
  debug = CmdArgs.add_arg('debug', bool, 'Enable debug output.')
  
  def debug(*args):
      if debug:
          print(*args)
  
new_contents: from __future__ import print_function
  from ed2d.cmdargs import CmdArgs
  
  debugEnabled = CmdArgs.add_arg('debug', bool, 'Enable debug output.')
  
  def debug(*args):
      if debugEnabled:
          print(*args)
  
subject: Rename debug variable to no conflict with the new function name.