old_contents: #!/usr/bin/env python
  
  import platform
  
  def legitimize(text, os=platform.system()):
      """Converts a string to a valid filename.
      """
  
      # POSIX systems
      text = text.translate({
          0: None,
          ord('/'): '-',
          ord('|'): '-',
      })
  
      if os == 'Windows':
          # Windows (non-POSIX namespace)
          text = text.translate({
              # Reserved in Windows VFAT and NTFS
              ord(':'): '-',
              ord('*'): '-',
              ord('?'): '-',
              ord('\\'): '-',
              ord('\"'): '\'',
              # Reserved in Windows VFAT
              ord('+'): '-',
              ord('<'): '-',
              ord('>'): '-',
              ord('['): '(',
              ord(']'): ')',
          })
      else:
          # *nix
          if os == 'Darwin':
              # Mac OS HFS+
              text = text.translate({
                  ord(':'): '-',
              })
  
          # Remove leading .
          if text.startswith("."):
              text = text[1:]
  
      text = text[:82] # Trim to 82 Unicode characters long
      return text
  
new_contents: #!/usr/bin/env python
  
  import platform
  
  def legitimize(text, os=platform.system()):
      """Converts a string to a valid filename.
      """
  
      # POSIX systems
      text = text.translate({
          0: None,
          ord('/'): '-',
          ord('|'): '-',
      })
  
      if os == 'Windows':
          # Windows (non-POSIX namespace)
          text = text.translate({
              # Reserved in Windows VFAT and NTFS
              ord(':'): '-',
              ord('*'): '-',
              ord('?'): '-',
              ord('\\'): '-',
              ord('\"'): '\'',
              # Reserved in Windows VFAT
              ord('+'): '-',
              ord('<'): '-',
              ord('>'): '-',
              ord('['): '(',
              ord(']'): ')',
          })
      else:
          # *nix
          if os == 'Darwin':
              # Mac OS HFS+
              text = text.translate({
                  ord(':'): '-',
              })
  
          # Remove leading .
          if text.startswith("."):
              text = text[1:]
  
      text = text[:80] # Trim to 82 Unicode characters long
      return text
  
subject: trim title length <= 80 (follow-up of ed12df2)