[XeTeX] using glyph from private use area

[François Patte]

Bonjour,

I want to reproduce a wrong(?) ligature in grantha characters.
I use the  NotoSerifGrantha-Regular.otf font and would like to use the 
glyph "yaPhalaa_gran" which has no unicode id. I can see this glyph, 
using fontforge and it is reported as: 151 0x97 u+???? "yaPhalaa_gran"

Is this possible and how?

Thank you for any help.
-- 
François Patte
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. +33 (0)6 7892 5822
http://www.math-info.univ-paris5.fr/~patte
FSF
https://www.fsf.org/blogs/community/presenting-shoetool-happy-holidays-from-the-fsf

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