# File formvalidator.rb, line 837
    def match_cc_exp(val)
      matched_month = matched_year = nil
      month, year = val.split("/")
      return nil if (matched_month = month.scan(/^\d+$/).to_s).empty?
      return nil if (matched_year = year.scan(/^\d+$/).to_s).empty?
      year = year.to_i
      month = month.to_i
      year += (year < 70) ? 2000 : 1900 if year < 1900
      now = Time.new.year
      return nil if (year < now) || (year == now && month <= Time.new.month)
      "#{matched_month}/#{matched_year}"
    end