I think that the minimal example should be expanded to contain greek
text in the body--Otherwise it doesn't make any sense (to me), e.g. it
should read as:
\documentclass[greek,english]{scrbook}
\usepackage[utf8]{inputenc}
\usepackage[greek,english]{babel}
\usepackage[unicode]{hyperref}
\usepackage{bookmark}
\begin{document}
\mainmatter
\chapter{Introduction}
An introduction.
\begin{otherlanguage}{greek}
\addchap{\texorpdfstring{Per'ilhyh}{Περίληψη}}
Αμφιθυμία,
μια λέξη
ελληνική.
\end{otherlanguage}
\end{document}
The above does not work :-(
I have no luck sofar doing anykind of combination. Is it _really_
possible to mix greek, english, babel, utf8 encoding, hyperref with
unicode=true?
