[XeTeX] difficulty with ancient greek diacriticals in XeTeX with Gentium Plus

[Khaled Hosny]

On Sun, Jul 21, 2013 at 12:55:30AM +0200, Georg Duffner wrote:
> Is there a way to disable HB’s normalization?

AFAIK, no (short of dropping the composed characters from the font or
the cmap table).

Regards,
Khaled