hpricot：Hpricot::Traverse#to_original_html

everyday Ruby 
>> require "hpricot"
=> true
>> doc = Hpricot('<p><b>foo1</b></p><p>foo2</p>')
=> #<Hpricot::Doc {elem <p> {elem <b> "foo1" </b>} </p>} {elem <p> "foo2" </p>}>
>> doc.to_original_html
=> "<p><b>foo1</b></p><p>foo2</p>"
>> doc.to_html
=> "<p><b>foo1</b></p><p>foo2</p>"
>> doc = Hpricot('<p><b>foo1</b><p>foo2')
=> #<Hpricot::Doc {elem <p> {elem <b> "foo1" </b>} {elem <p> "foo2"}}>
>> doc.to_html
=> "<p><b>foo1</b><p>foo2</p></p>"
>> doc.to_original_html
=> "<p><b>foo1</b><p>foo2"