I would like to use the features of soulutf8 and compile a document containing greek letters with LuaLaTeX. However, this approach seems to gobble the letters that I chose for underlining. What can be done?
\documentclass{scrbook}
\usepackage{fontspec}
\usepackage{libertine}
\usepackage{soulutf8}
\begin{document}
ὦ \ul{Ἀχιλεῦ}, Πηλῆος υἱέ, μέγα φέρτατ’ \ul{Ἀχαιῶν},
\end{document}
soulutf8, justsoul. – egreg Apr 24 '18 at 21:34