\documentclass{article}
\usepackage{miller}

%\usepackage{ushort}
%\ushortCreate:\overline{oshort}
%\renewcommand\millerminus{\oshort}

\listfiles

\begin{document}

\hkl[110]

\hkl(1-10)

\hkl<123>

\hkl{-1-10}

\hkl{-a-bc}

\hkl{-1-120}

\end{document}
