Tween-like notification for twittering-mode

gistfile1.sls

(add-hook 'twittering-new-tweets-hook
          #'(lambda ()
              (let ((n twittering-new-tweets-count)
                    (statuses twittering-new-tweets-statuses))
                (start-process "twittering-notify" nil "notify-send"
                               "-i" "/usr/share/pixmaps/gnome-emacs.png"
                               (format "New %d tweet%s"
                                       n (if (> n 1) "s" ""))
                               (let ((func (lambda (stat)
                                             (concat (cdr (assq 'user-screen-name stat))
                                                     ": "
                                                     (let ((text (cdr (assq 'text stat))))
                                                       (if (> (length text) 20)
                                                           (concat (substring text 0 20) "...")
                                                         text))))))
                                 (if (< n 4)
                                     (mapconcat func statuses "\n")
                                   (concat (mapconcat func (butlast statuses (- n 3)) "\n") "\n...")))))))