How to delete a node with Hpricot?

Hi,

Sorry if this is not the right forum for this question.

If a node is bad I'm trying to comment it out. If it's really bad I'm trynig to delete it.

The way I'm trying to do is is as follows.

def this_is_a_problem   doc = Hpricot( html )   doc.traverse_element do |node|   if some_bad_node_test     unless really_bad?      node.swap( "<!-- comment out node #{node.to_html} -->" )     else        node.swap( "" )     end   end   doc.to_html end

However I'm getting a nasty error.

TypeError: no implicit conversion from nil to integer     /usr/local/lib/ruby/gems/1.8/gems/hpricot-0.5/lib/hpricot/traverse.rb:395:in `='

Am I doing this the wrong way?

Thanx

Daniel