My minimal non-working example is:
\documentclass[12pt]{article}
\usepackage{fontspec}
\setmainfont{EB Garamond}
\begin{document}
This is a test. Quisque
{\addfontfeature{RawFeature=+hlig}standard, acta, \textit{speak, skies, standard, select}}
\end{document}
I got the code of \addfontfeature from EB Garamond's specimen file. However, I'm not getting the ligatures as they should appear. Does anyone have a clue to how to get them to work? I'm not a font expert :-(