docs: def replace_unicode(self, m):
          """Replace escapes."""
  
          groups = m.groupdict()
          esc = m.group(0)
          if groups.get('fesc'):
              value = m.group(0)
          elif groups.get('format'):
              value = ' '
          elif groups.get('special'):
              value = BACK_SLASH_TRANSLATION[esc]
          elif groups.get('char'):
              try:
                  value = chr(int(esc[2:], 16))
              except Exception:
                  value = esc
          elif groups.get('oct'):
              value = chr(int(esc[1:], 8))
          elif groups.get('name'):
              try:
                  value = unicodedata.lookup(esc[3:-1])
              except Exception:
                  value = esc
          return value.replace('\x00', '\n')