class Nokogiri::XML::Node

def replace node_or_tags

Also see related method +swap+.

Returns the reparented node (if +node_or_tags+ is a Node), or NodeSet (if +node_or_tags+ is a DocumentFragment, NodeSet, or string).

+node_or_tags+ can be a Nokogiri::XML::Node, a ::DocumentFragment, a ::NodeSet, or a string containing markup.
Replace this Node with +node_or_tags+.
### 
def replace node_or_tags
  # We cannot replace a text node directly, otherwise libxml will return
  # an internal error at parser.c:13031, I don't know exactly why
  # libxml is trying to find a parent node that is an element or document
  # so I can't tell if this is bug in libxml or not. issue #775.
  if text?
    replacee = Nokogiri::XML::Node.new 'dummy', document
    add_previous_sibling_node replacee
    unlink
    return replacee.replace node_or_tags
  end
  node_or_tags = coerce(node_or_tags)
  if node_or_tags.is_a?(XML::NodeSet)
    node_or_tags.each { |n| add_previous_sibling n }
    unlink
  else
    replace_node node_or_tags
  end
  node_or_tags
end