# File lib/sass/script/parser.rb, line 50
      def parse_interpolated(warn_for_color = false)
        # Start two characters back to compensate for #{
        start_pos = Sass::Source::Position.new(line, offset - 2)
        expr = assert_expr :expr
        assert_tok :end_interpolation
        expr = Sass::Script::Tree::Interpolation.new(
          nil, expr, nil, false, false, :warn_for_color => warn_for_color)
        check_for_interpolation expr
        expr.options = @options
        node(expr, start_pos)
      rescue Sass::SyntaxError => e
        e.modify_backtrace :line => @lexer.line, :filename => @options[:filename]
        raise e
      end