RSS does not allow for free-form tag names, so if an RSS feed contains a tag that we don't know about, an UnknownTagError is raised.

Methods
N
Attributes
[R] tag
[R] uri
Class Public methods
new(tag, uri)
# File lib/rss/rss.rb, line 133
def initialize(tag, uri)
  @tag, @uri = tag, uri
  super("tag <#{tag}> is unknown in namespace specified by uri <#{uri}>")
end