[XeTeX] Problem with xltxtra

[Marc van Dongen]

Dear all,


In the following miminal example, \textvisiblespace breaks
as, what appears to be, the result of xltxtra, which I need.
(The font GaramondPremrPro is locally defined and does not
have a meaningful glyph for a visual space.)

Am I doing something wrong?

\documentclass{minimal}

\usepackage{fontspec}
\usepackage{xltxtra}
\fontspec{GaramondPremrPro}
\setmainfont{GaramondPremrPro}

\begin{document}
   \textvisiblespace
\end{document}

Thanks in advance for your help.

Regards,


Marc van Dongen