Same author also wrote a nice, short intro on how to get started with Emacs bug hunting: <a href="https:&#x2F;&#x2F;lars.ingebrigtsen.no&#x2F;2014&#x2F;11&#x2F;13&#x2F;welcome-new-emacs-developers&#x2F;" rel="nofollow">https:&#x2F;&#x2F;lars.ingebrigtsen.no&#x2F;2014&#x2F;11&#x2F;13&#x2F;welcome-new-emacs-de...</a>