tag_options

# File actionview/lib/action_view/helpers/tag_helper.rb, line 261
        def tag_options(options, escape = true)
          return if options.blank?
          output = +""
          sep    = " "
          options.each_pair do |key, value|
            type = TAG_TYPES[key]
            if type == :data && 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 type == :aria && value.is_a?(Hash)
              value.each_pair do |k, v|
                next if v.nil?

                case v
                when Array, Hash
                  tokens = TagHelper.build_tag_values(v)
                  next if tokens.none?

                  v = safe_join(tokens, " ")
                else
                  v = v.to_s
                end

                output << sep
                output << prefix_tag_option(key, k, v, escape)
              end
            elsif type == :boolean
              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