Adding a node with a default namespace stores it as 'no-namespace' in the parent

[david]

This works:

doc = Nokogiri::XML("<element><child xmlns="woop:de:doo" /></element>")
doc.at("//xmlns:child", 'xmlns' => 'woop:de:doo') #=> <child xmlns="woop:de:doo" />

This doesn't:

doc = Nokogiri::XML::Document.new
e = Nokogiri::XML::Node.new('element', doc)
c = Nokogiri::XML::Node.new('child', doc)
c.add_namespace(nil, 'woop:de:doo')
e.add_child(c)
doc.add_child(c)

doc.at("//xmlns:child", 'xmlns' => 'woop:de:doo') #=> nil

[david]

I'd also like to add that if you have a document like this:

<element>
  <c1 xmlns="one" />
  <c2 xmlns="two" />
</element>

then

doc.root.collect_namespaces.inspect #=> {'xmlns' => 'two'}

[tenderlove]

Yup. That is the danger of collect_namespaces. I think that method should be removed.

The first problem is fixed here: c6e5fa0