docs: def markdown(text, renderer=None, **options):
      """
      Parses the provided Markdown-formatted text into valid HTML, and returns
      it as a :class:`flask.Markup` instance.
  
      :param text: Markdown-formatted text to be rendered into HTML
      :param renderer: A custom misaka renderer to be used instead of the default one
      :param options: Additional options for customizing the default renderer
      :return: A :class:`flask.Markup` instance representing the rendered text
      """
      ext, rndr = make_flags(**options)
      if renderer:
          md = misaka.Markdown(renderer,ext)
          result = md(text)
      else:
          result = misaka.html(text, extensions=ext, render_flags=rndr)
      if options.get("smartypants"):
          result = misaka.smartypants(result)
      return Markup(result)