[XeTeX] Extra trailing space in IPA font with xltxtra

[Philip Taylor (Webmaster, Ret'd)]

P.S. This may be a more elegant solution :

\documentclass{article}
\usepackage{xltxtra} %or xunicode
\usepackage{linguex}
\setmainfont{Charis SIL}
\begin{document}
\def\implementTIPAtextx#1{\scantokens{#1\endinput}\egroup}
\ex. \textipa{DOES THIS WORK?}

\end{document}

** Phil.