# File wfo/cookie.rb, line 35
  def self.split(field_value)
    cookies = [[]]
    field_value.scan(/(#{AttrPat})\s*(?:=\s*(#{ValuePat})\s*)?([;,])?/) {|attr, value, term|
      attr = attr.strip
      cookies.last << [attr, value]
      if term == ','
        cookies << []
      end
    }
    cookies.pop if cookies.last == []
    cookies
  end