bug#19194: 24.4.50; `window-body-width' is not dynamic relative to font size changes

[martin rudalics]

>> Hmm... I'm lost.  Which face is referenced by the default face?
>
> The face whose symbol is 'default', e.g.:
>
>    (face-font 'default)
>     => "-outline-Courier New-normal-normal-normal-mono-15-*-*-*-c-*-iso8859-1"

But that is a font.  I must be stuck in some biased assumption about
fonts and face.

martin