# How to enable OpenType font features for Hangul?

In my document, I need to typeset some Hangul syllables that are not available as composite characters. I tried to set this up as in this MWE:

\documentclass{article}
\usepackage{fontspec}
\usepackage{xeCJK}
\setCJKmainfont[Script=Hangul,Language=Korean]{Source Han Sans KR}

\begin{document}
가
\end{document}


The text is typeset in the correct font but as separate Jamo, not a composed syllable. Using \fontspec as in the example below works, but requires me to mark which text is Hangul manually.

\documentclass{article}
\usepackage{fontspec}

\begin{document}
\fontspec[Script=Hangul,Language=Korean]{Source Han Sans KR}
가
\end{document}


The xeCJK documentation is less than helpful, being written in Chinese.

It was a known issue and had been fixed in xeCJK revision 737.
Make sure you are using xeCJK version 2014/11/10 v3.2.15 or later. Update your packages when necessary.