# File lib/sass/tree/node.rb, line 337
      def run_interp(text, environment)
        text.map do |r|
          next r if r.is_a?(String)
          val = r.perform(environment)
          # Interpolated strings should never render with quotes
          next val.value if val.is_a?(Sass::Script::String)
          val.to_s
        end.join.strip
      end