Anyway, here it is

<typo:code lang=”ruby”> # Generate the image tag with the favorite icon of a given URL # Returns an empty string in case of failure def favicon_tag(url)

require 'open-uri'
require 'rexml/document'
require 'net/http'

uri = URI.parse(url) rescue nil
f = open(uri).read() rescue nil
doc = REXML::Document.new(f) rescue nil
href = REXML::XPath.first(doc, "//link[@rel='shortcut icon']/@href").value rescue "/favicon.ico"
# try to get it
favicon = uri + href
h = Net::HTTP.new(favicon.host, favicon.port)
r,d = h.head(favicon.path) rescue nil
if r.code == "200"
  return image_tag favicon.to_s
else
  return ''
end

end </typo:code>