# File lib/nanoc/filters/rdoc.rb, line 22
    def run(content, params={})
      begin
        # new RDoc
        ::RDoc::Markup.new.convert(content, ::RDoc::Markup::ToHtml.new)
      rescue LoadError
        # old RDoc
        ::SM::SimpleMarkup.new.convert(content, ::SM::ToHtml.new)
      end
    end