pdfcomment and polyglossia incompatibility?

Question

I would like to use the pdfcomment package to make some annotations to a pdf. It seems to conflict with polyglossia:

\documentclass{memoir}
\usepackage{xcolor,pdfcomment,polyglossia}
\setmainlanguage{english}
\setotherlanguage{german}
\begin{document}
Some text.
\pdfmarkupcomment[markup=Squiggly,color=green,author={somebody}]{Some \emph{more} text. \textgerman{Etwas Text}.}{some suggestion}
\end{document}                    

Gives me the following error:

! Argument of \\textgerman has an extra }.
<inserted text> 
                \par 
l.7 ... \textgerman{Etwas Text}.}{some suggestion}

If I replace the \textgerman by \emph the file builds fine.

Answer 1

You can register \textgerman with soul:

\documentclass{memoir}
\usepackage{xcolor,polyglossia}
\usepackage[draft]{pdfcomment}
\setmainlanguage{english}
\setotherlanguage{german}

\AtBeginDocument{\soulregister{\textgerman}{1}}

\begin{document}

Some text.
\pdfmarkupcomment[
  markup=Squiggly,
  color=green,
  author={somebody}
]{Some \emph{more} text. \textgerman{Etwas Text}.}{some suggestion}

\end{document}