docs: def format(self, record):
          ''' Log color formatting. '''
          levelname = record.levelname    # len7 limit
          if levelname == 'CRITICAL':
              levelname = record.levelname = 'FATAL'
          if self.usesTime():
              record.asctime = self.formatTime(record, self.datefmt)
  
          # render the message part with arguments
          try:  # Allow {} style - need a faster way to determine this:
              message = record.getMessage()
          except TypeError:
              message = record.msg.format(*record.args)
  
          # decide to highlight w/ pygments
          # TODO: Highlight args directly and drop text scan? - didn't work well.
          if self._highlight:
              match = self.data_search(message, 0, DATA_SEARCH_LIMIT)
              if match:
                  pos = match.start()
                  front, back = message[:pos], message[pos:]  # Spliten-Sie
                  if front.endswith('\n'):                    # indent data?
                      back = pformat(record.args)
                      back = left_indent(back, self._code_indent)
                  back = self._highlight(back, self._lexer, self._hl_formatter)
                  message = f'{front}{back}'
  
          record.message = message
          record.on = self._theme_style.get(levelname, '')
          record.icon = self._theme_icons.get(levelname, '')
          record.off = _end
          s = self.formatMessage(record)
  
          # this needs to be here, Formatter class isn't very extensible.
          if record.exc_info:
              # Cache the traceback text to avoid converting it multiple times
              # (it's constant anyway)
              if not record.exc_text:
                  record.exc_text = self.formatException(record.exc_info)
          if record.exc_text:
              if s[-1:] != "\n":
                  s = s + "\n"
              s = s + record.exc_text
          if record.stack_info:
              if s[-1:] != "\n":
                  s = s + "\n"
              s = s + self.formatStack(record.stack_info)
          return s