module Puma::Util

def parse_query(qs, d = nil, &unescaper)

parameter (which defaults to '&;').
cookies by changing the characters used in the second
and ';' characters. You can also use this to parse
Parses a query string by breaking it up at the '&'
Stolen from Mongrel, with some small modifications: 
def parse_query(qs, d = nil, &unescaper)
  unescaper ||= method(:unescape)
  params = {}
  (qs || '').split(d ? /[#{d}] */n : DEFAULT_SEP).each do |p|
    next if p.empty?
    k, v = p.split('=', 2).map(&unescaper)
    if cur = params[k]
      if cur.class == Array
        params[k] << v
      else
        params[k] = [cur, v]
      end
    else
      params[k] = v
    end
  end
  params
end