def auto_link(text, *args, &block)
return '' if text.blank?
options = args.size == 2 ? {} : args.extract_options!
unless args.empty?
options[:link] = args[0] || :all
options[:html] = args[1] || {}
end
options.reverse_merge!(:link => :all, :html => {})
case options[:link].to_sym
when :all then auto_link_email_addresses(auto_link_urls(text, options[:html], &block), options[:html], &block)
when :email_addresses then auto_link_email_addresses(text, options[:html], &block)
when :urls then auto_link_urls(text, options[:html], &block)
end
end