Subject: bug#4258: Preferring HTML parts

From: Stefan Monnier <[email-masked]>
Date: Thu, 04 Sep 2014 12:28:34 -0400

> + (defcustom rmail-mime-prefer-html
> +   t

We should only prefer html if we have a renderer (i.e. if
rmail-mime-render-html-function is non-nil).

I skipped the rest of the patch since I'm not familiar with Rmail and
even less with Rmail's MIME handling.

        Stefan