Table of glyphs with XeTeX

glyps.tex

% via http://tex.stackexchange.com/questions/23863/generating-a-table-of-glyphs-with-xetex
\documentclass[landscape]{article}
\usepackage{geometry}
\usepackage{fontspec}
\setmainfont{Linux Libertine O}
\usepackage{multicol}
\setlength{\columnseprule}{0.4pt}
\usepackage{multido}
\setlength{\parindent}{0pt}
\begin{document}

\begin{multicols}{10}
\multido{\i=0+1}{"10000}{% from U+0000 to U+FFFF
  \iffontchar\font\i
    \makebox[3em][l]{\i}%
    \symbol{\i}\endgraf
  \fi
}
\end{multicols}
\end{document}