bug#19395: 25.0.50; Setting left fringe to 0 messes up window-width

[Eli Zaretskii]

> Date: Sat, 20 Dec 2014 17:03:33 +0100
> From: martin rudalics <rudalics@gmx.at>
> CC: Eli Zaretskii <eliz@gnu.org>, 19395@debbugs.gnu.org
> 
> BTW, do we have some character or letter spacing which we should
> consider as well?  IIRC somone asked here for an orthogonal function
> that would consider line spacing.

There is already default-line-height which does that for the font of
the default face.