old_contents: # -*- coding: utf-8 -*-
  """
  Parse and translate an EBNF grammar into a Python parser for
  the described language.
  """
  from __future__ import (absolute_import, division, print_function,
                          unicode_literals)
  from grako import tool
  
  genmodel = tool.genmodel
  codegen = tool.codegen
  
  
  def main():
      tool.main()
  
  if __name__ == '__main__':
      main()
  
new_contents: # -*- coding: utf-8 -*-
  """
  Parse and translate an EBNF grammar into a Python parser for
  the described language.
  """
  from __future__ import (absolute_import, division, print_function,
                          unicode_literals)
  from grako import tool
  
  genmodel = tool.genmodel
  gencode = tool.gencode
  
  
  def main():
      tool.main()
  
  if __name__ == '__main__':
      main()
  
subject: Revert unwanted change in tool/script.