I'll write this to HACKING file.
http://mail.gnu.org/archive/html/emacs-devel/2004-03/msg00077.html
> From: Miles Bader
> Subject: Re: ruler support in hexl mode
> Date: Mon, 8 Mar 2004 16:00:06 -0500
> User-agent: Mutt/1.3.28i
>
> On Fri, Mar 05, 2004 at 02:29:15PM +0900, Masatake YAMATO wrote:
> > +(defface hexl-address-area-face
> > +(defface hexl-ascii-area-face
>
> Please do not use a `-face' suffix for face names -- it's unnecessary and
> redundant (faces have their own namespace). These faces should be called
> just `hexl-address-area' and `hexl-ascii-area'.
>
> Thanks,
>
> -Miles
> --
> `Life is a boundless sea of bitterness'
