从\gems\hpricot-0.8.6\lib\hpricot\parse.rb line 3

def Hpricot(input = nil, opts = {}, &blk)
  Hpricot.make(input, opts, &blk)
end

\gems\hpricot-0.8.6\lib\hpricot\parse.rb line 27

def Hpricot.make(input = nil, opts = {}, &blk)
  if blk
    doc = Hpricot.build(&blk)
    doc.instance_variable_set("@options", opts)
    doc
  else
    Hpricot.scan(input, opts)
  end
end

到 Hpricot.scan(input, opts) 以后，然后执行了哪去了？找不到 scan 方法的实现 全封装在 hpricot_scan.so 里面