Subject: bug#9543: 23.3.50; help-echo property

From: Stefan Monnier <[email-masked]>
Date: Mon, 19 Sep 2011 08:57:43 -0400

>   (setq x '(:eval (propertize "x" 'help-echo (message "Wow"))))

Hint: try to replace `help-echo' with `toto' and see what happens.

        Stefan