code: def _indent(indent=0, quote='', indent_char=' '):
      
      if indent > 0:
          indent_string = ''.join((
              str(quote),
              (indent_char * (indent - len(quote)))
          ))
      else:
          indent_string = ''.join((
              ('\x08' * (-1 * (indent - len(quote)))),
              str(quote))
          )
  
      if len(indent_string):
          INDENT_STRINGS.append(indent_string)
docs: Indent util function, compute new indent_string