mechanize：Mechanize::Form#buttons

everyday Ruby

以下のような HTML で

<html>
<head>
<title>form test</title>
</head>
<body>

<form method="get" action="cgi/foo00.cgi" name="form1">
  <input type="submit" value="Send" />　
  <input type="reset"  value="Cancel" />
</form>

</body>
</html>
>> require 'mechanize'
=> true
>> agent = Mechanize.new
=> #<Mechanize:0xb74065ac ...
>> page = agent.get('http://127.0.0.1:8080/test11_button.html')
=> #<Mechanize::Page
 {url #<URI::HTTP:0xb7402c2c URL:http://127.0.0.1:8080/test11_button.html>}
 {meta}
 {title "form test"}
 {iframes}
 {frames}
 {links}
 {forms
  #<Mechanize::Form
   {name "form1"}
   {method "GET"}
   {action "cgi/foo00.cgi"}
   {fields}
   {radiobuttons}
   {checkboxes}
   {file_uploads}
   {buttons
    #<Mechanize::Form::Submit:0xb73fa248
     @name=nil,
     @node=
      #(Element:0x..fdb9fd1b0 {
        name = "input",
        attributes = [
          #(Attr:0x..fdb9fb6c6 { name = "type", value = "submit" }),
          #(Attr:0x..fdb9fb6bc { name = "value", value = "Send" })]
        }),
     @value="Send">}>}>

>> page.form_with(:name => "form1").buttons
=> [#<Mechanize::Form::Submit:0xb73fa248 @name=nil, @value="Send", @node=#<Nokogiri::XML::Element:0x..fdb9fd1b0 name="input" attributes=[#<Nokogiri::XML::Attr:0x..fdb9fb6c6 name="type" value="submit">, #<Nokogiri::XML::Attr:0x..fdb9fb6bc name="value" value="Send">]>>]
>> page.form_with(:name => "form1").buttons.size
=> 1

なぜ 1つになっちゃうんだ？以下の部分のせい？？？

class Mechanize
  ...
  class Form
    ...
    private
    def parse
      ...

      # Find all submit button tags
      # FIXME: what can I do with the reset buttons?
      form_node.search('button').each do |node|
        type = (node['type'] || 'submit').downcase
        next if type == 'reset'
        @buttons << Button.new(node)
      end
    end
    ...