old_contents: """
    Copyright 2014 Google Inc. All rights reserved.
  
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
  
        http://www.apache.org/licenses/LICENSE-2.0
  
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
  """
  
  from __future__ import print_function
  import sys
  import os
  import errno
  from fontTools.subset import Options
  import cleanup
  import closure
  from preprocess import Preprocess
  import argparse
  
  
  def main(args):
    """Main program to run preprocessing of the font Arguments:
  
      font-file
      --output= Output folder of the files, default is current folder
      --hinting=(False|True)  ,default is false
    """
    parser = argparse.ArgumentParser(prog='pyprepfnt')
    parser.add_argument('fontfile',help='Input font file')
    parser.add_argument('--hinting', nargs='?', default=False ,type=bool, help='Enable hinting if True, default is False')
    parser.add_argument('--output', nargs='?', default='.' , help='Output folder, default is current folder')
    cmd_args = parser.parse_args(args)
  
    fontfile = cmd_args.fontfile
    # TODO(bstell) use Logger
    print('preprocess {0}'.format(cmd_args.fontfile))
    basename = os.path.basename(fontfile)
    filename, extension = os.path.splitext(basename)
    output_folder = cmd_args.output+'/'+filename
    print('put results in {0}'.format(output_folder))
    try:
        os.makedirs(output_folder)
    except OSError as exception:
        if exception.errno != errno.EEXIST:
            raise
  
    cleanfile = output_folder+'/'+filename + '_clean' + extension
    print('make cleaned up version: {0}'.format(cleanfile))
    cleanup.cleanup(fontfile, cmd_args.hinting, cleanfile)
  
    print('build closure')
    closure.dump_closure_map(cleanfile, output_folder)
  
    preprocess = Preprocess(cleanfile, output_folder)
    print('build base')
    preprocess.base_font()
    print('dump cmap')
    preprocess.cmap_dump()
    print('build glyph data')
    preprocess.serial_glyphs()
    print('done')
  
  def console_msg(msg):
    pass
  
  if __name__ == '__main__':
    main(sys.argv[1:])
  
new_contents: """
    Copyright 2014 Google Inc. All rights reserved.
  
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
  
        http://www.apache.org/licenses/LICENSE-2.0
  
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
  """
  
  from __future__ import print_function
  import sys
  import os
  import errno
  from fontTools.subset import Options
  import cleanup
  import closure
  from preprocess import Preprocess
  import argparse
  
  
  def main(args):
    """Main program to run preprocessing of the font Arguments:
  
      font-file
      --output= Output folder of the files, default is current folder
      --hinting=(False|True)  ,default is false
    """
    parser = argparse.ArgumentParser(prog='pyprepfnt')
    parser.add_argument('fontfile',help='Input font file')
    parser.add_argument('--hinting', nargs='?', default=False ,type=bool, help='Enable hinting if True, default is False')
    parser.add_argument('--output', nargs='?', default='.' , help='Output folder, default is current folder')
    cmd_args = parser.parse_args(args)
  
    fontfile = cmd_args.fontfile
    # TODO(bstell) use Logger
    print('preprocess {0}'.format(cmd_args.fontfile))
    basename = os.path.basename(fontfile)
    filename, extension = os.path.splitext(basename)
    output_folder = cmd_args.output+'/'+filename
    print('put results in {0}'.format(output_folder))
    try:
        os.makedirs(output_folder)
    except OSError as exception:
        if exception.errno != errno.EEXIST:
            raise
  
    cleanfile = output_folder+'/'+filename + '_clean' + extension
    print('make cleaned up version: {0}'.format(cleanfile))
    cleanup.cleanup(fontfile, cmd_args.hinting, cleanfile)
  
    print('build closure')
    closure.dump_closure_map(cleanfile, output_folder)
  
    print('start proprocess')
    preprocess = Preprocess(cleanfile, output_folder)
    print('build base')
    preprocess.base_font()
    print('dump cmap')
    preprocess.cmap_dump()
    print('build glyph data')
    preprocess.serial_glyphs()
    print('done')
  
  def console_msg(msg):
    pass
  
  if __name__ == '__main__':
    main(sys.argv[1:])
  
subject: Add an additional comment during the proprocessing.