# File lib/action_controller/vendor/rack-1.0/rack/utils.rb, line 53
    def parse_nested_query(qs, d = '&;')
      params = {}

      (qs || '').split(/[#{d}] */n).each do |p|
        k, v = unescape(p).split('=', 2)
        normalize_params(params, k, v)
      end

      return params
    end