docs: def quotify(x):
      """Replaces Quoted elements in element list 'x' with quoted strings.
  
      Pandoc uses the Quoted element in its json when --smart is enabled.
      Output to TeX/pdf automatically triggers --smart.
  
      stringify() ignores Quoted elements.  Use quotify() first to replace
      Quoted elements in 'x' with quoted strings.  'x' should be a deep copy so
      that the underlying document is left untouched.
  
      Returns x."""
  
      def _quotify(key, value, fmt, meta):  # pylint: disable=unused-argument
          """Replaced Quoted elements with quoted strings."""
          if key == 'Quoted':
              ret = []
              quote = '"' if value[0]['t'] == 'DoubleQuote' else "'"
              if value[1][0]['t'] == 'Str':
                  value[1][0]['c'] = quote + value[1][0]['c']
              else:
                  ret.append(Str(quote))
  
              if value[1][-1]['t'] == 'Str':
                  value[1][-1]['c'] = value[1][-1]['c'] + quote
                  ret += value[1]
              else:
                  ret += value[1] + [Str(quote)]
              return ret
          return None
  
      return walk(walk(x, _quotify, '', {}), join_strings, '', {})