# File lib/erubis/enhancer.rb, line 420
    def add_text(src, text)
      return unless text
      m = nil
      text.scan(@bipattern_regexp) do |txt, indicator, code|
        m = Regexp.last_match
        super(src, txt)
        add_expr(src, code, '=' + indicator)
      end
      #rest = $' || text                    # ruby1.8
      rest = m ? text[m.end(0)..-1] : text  # ruby1.9
      super(src, rest)
    end