The LaTeX input below gave this output:
[image: image.png]
\documentclass[11pt]{report}
\usepackage{fontspec}
\setmainfont{Noto Sans Grantha} [Mapping=velthuis-sanskrit-grantha]
\begin{document}
a aa i ii u uu .r .R k ka kaa khi khii gu guu gh.r gh.R
atha trairaa"sike kara.nasuutrav.rttam---
\end{document}
velthuis-sanskrit-grantha.tec was made with
teckit_compile velthuis-sanskrit-grantha.map
sudo mktexlsr
in ../localtexmf/fonts/misc/xetex/fontmapping
Best,
Dominik
