On Fri, 26 Jul 2013 22:38:10 +0200
Philipp Gesang <philipp.ges...@alumni.uni-heidelberg.de> wrote:

> Hi John!
> 
> ···<date: 2013-07-26, Friday>···<from: john Culleton>···
> 
> > I am tryihg to follow the wiki on "Fonts in Luatex." It suggests the
> > following statement for Linux systems:
> > 
> > export OSFONTDIR="/usr/local/share/fonts;$HOME/.fonts"
> > 
> > But I store my fonts in /usr/share/fonts so I used:
> > 
> > export OSFONTDIR="/usr/share/fonts"
> > 
> > The net effect of this statement was to wipe out all my text fonts
> > used with XFCE4 or KDE, at least when I use my regular user
> > signon.  I examined my /etc/profile, $HOME/.profile, @HOME/.bashrc
> > files and deleted or commented out all references to OSFONTDIR. I
> > still have no gui fonts. 
> 
> Can you clarify what you mean by “wipe out”? Were the font files
> deleted? Are other kinds of fonts (e.g. bitmap/pfb) still
> working?
> 
> > If anyone has any suggestions on how I can revive my gui fonts that
> > would be welcome. Only my regular user signon is affected, But I
> > really want to know what kind of OSFONTDIR statement I can use that
> > won't wipe out my gui fonts. 
> 
> OSFONTDIR is a tex specific (kpathsea and Context) variable that
> I don’t think is used by the system (fontconfig, desktop
> environment). While you were fiddling with font paths, is it
> possible that you accidentally modified something else, like
> ~/.config/fontconfig or /etc/fonts/* ?
> 
> Best regards,
> Philipp

When signed on as my usual username and I fire up the gui I get
squares instead of characters. It works OK if I sign on as an alternate 
user or root. 

I'll try the sudo fc-cache -fv route and see what happens.
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