# File lib/www/mechanize/util.rb, line 5
 5:         def build_query_string(parameters)
 6:           parameters.map { |k,v|
 7:             k &&
 8:               [WEBrick::HTTPUtils.escape_form(k.to_s),
 9:                 WEBrick::HTTPUtils.escape_form(v.to_s)].join("=")
10:           }.compact.join('&')
11:         end

    # File lib/www/mechanize/util.rb, line 13
13:         def html_unescape(s)
14:           return s unless s
15:           s.gsub(/&(\w+|#[0-9]+);/) { |match|
16:             number = case match
17:             when /&(\w+);/
18:               Mechanize.html_parser::NamedCharacters[$1]
19:             when /&#([0-9]+);/
20:               $1.to_i
21:             end
22:   
23:             number ? ([number].pack('U') rescue match) : match
24:           }
25:         end