tag_options

# File actionview/lib/action_view/helpers/tag_helper.rb, line 59
        def tag_options(options, escape = true)
          return if options.blank?
          output = +""
          sep    = " "
          options.each_pair do |key, value|
            if TAG_PREFIXES.include?(key) && value.is_a?(Hash)
              value.each_pair do |k, v|
                next if v.nil?
                output << sep
                output << prefix_tag_option(key, k, v, escape)
              end
            elsif BOOLEAN_ATTRIBUTES.include?(key)
              if value
                output << sep
                output << boolean_tag_option(key)
              end
            elsif !value.nil?
              output << sep
              output << tag_option(key, value, escape)
            end
          end
          output unless output.empty?
        end