automatically add link text to link_to (though this code force-update original link_to)

gistfile1.rb

module ActionView
  module Helpers
    module UrlHelper
      alias original_link_to link_to

      def link_to(*args, &block)
        if block_given?
          options      = args.first || {}
          html_options = args.second
          link_to(capture(&block), options, html_options)
        else
          html_options = args[2]
          unless is_tag?(args[0])
            if html_options.nil?
              html_options = { title: args[0] }
            elsif not html_options.has_key?('title')
              html_options['title'] = args[0]
            end
          end

          original_link_to args[0], args[1], html_options
        end
      end

      def is_tag? str
        str.match /^</
      end
    end
  end
end