# File lib/kramdown/parser/kramdown/extensions.rb, line 48
      def update_ial_with_ial(ial, opts)
        (ial[:refs] ||= []) << opts[:refs]
        opts.each do |k,v|
          if k == IAL_CLASS_ATTR
            ial[k] = (ial[k] || '') << " #{v}"
            ial[k].lstrip!
          elsif k.kind_of?(String)
            ial[k] = v
          end
        end
      end