[Nokogiri-talk] assume the position

[Phlip]

Nokogiri:

Given a Nokogiri::XML::Node, how do I detect its relative position among its 
parent's children? Should I just look for it among its parent's children?

And how do I detect its absolute position within the DOM? Should I start at the 
root and do depth-first in-order traversal, counting, until I find it?

I will do those things, yet it seems that I'm replicating XPath's position() 
function, so if there's a simpler way...

I'm also open to alternate suggestions for my ulterior algorithm here. I'm 
trying to upgrade http://gist.github.com/76136 so it complains if your HTML puts 
nodes in a different order than your spec...

-- 
   Phlip