[XeTeX] Fwd: Text figures (Old style figure) in XeTeX

[kmc.best]

---------- Forwarded message ----------
From: "kmc.best" <kmc.b... at gmail.com>
Date: Dec 19, 6:54 pm
Subject: Text figures (Old style figure) in XeTeX
To: comp.text.tex


Hi all,

I'm using XeTeX 0.997 on MiKTeX 2.7 to explore some features of a
professional font (Minion Pro):

\usepackage[cm-default]{fontspec}
\setmainfont[Numbers=OldStyle]{Minion Pro}

I found that the text figures can be displayed in the resulting PDF
but they can't be searched/copied, which indicates that they're not
well embedded. Is this a know issue?

Thanks