    # File lib/locale/driver/cgi.rb, line 62
         def charset
           req = Thread.current[:current_request]
           return nil unless req

           charsets = req[:accept_charset]
           if charsets and charsets.size > 0
             num = charsets.index(',')
             charset = num ? charsets[0, num] : charsets
             charset = nil if charset == "*"
           else
             charset = nil
           end
           charset
         end