code: def foldOneLine(outbuf, input, lineLength = 75):
      
  
      if len(input) < lineLength:
          # Optimize for unfolded line case
          try:
              outbuf.write(bytes(input, 'UTF-8'))
          except Exception:
              # fall back on py2 syntax
              outbuf.write(input)
  
      else:
          # Look for valid utf8 range and write that out
          start = 0
          written = 0
          while written < len(input):
              # Start max length -1 chars on from where we are
              offset = start + lineLength - 1
              if offset >= len(input):
                  line = input[start:]
                  try:
                      outbuf.write(bytes(line, 'UTF-8'))
                  except Exception:
                      # fall back on py2 syntax
                      outbuf.write(line)
                  written = len(input)
              else:
                  # Check whether next char is valid utf8 lead byte
                  # while (input[offset] > 0x7F) and ((ord(input[offset]) & 0xC0) == 0x80):
                  #    # Step back until we have a valid char
                  #    offset -= 1
  
                  line = input[start:offset]
                  try:
                      outbuf.write(bytes(line, 'UTF-8'))
                      outbuf.write(bytes("\r\n ", 'UTF-8'))
                  except Exception:
                      # fall back on py2 syntax
                      outbuf.write(line)
                      outbuf.write("\r\n ")
                  written += offset - start
                  start = offset
      try:
          outbuf.write(bytes("\r\n", 'UTF-8'))
      except Exception:
          # fall back on py2 syntax
          outbuf.write("\r\n")
docs: Folding line procedure that ensures multi-byte utf-8 sequences are not broken across lines
  
      TO-DO: This all seems odd. Is it still needed, especially in python3?