module ActionText::PlainTextConversion

def plain_text_for_blockquote_node(node, index)
  text = plain_text_for_block(node)
  return "“”" if text.blank?
  text = text.dup
  text.insert(text.rindex(/\S/) + 1, "”")
  text.insert(text.index(/\S/), "“")
  text
end