[Tex/LaTex] XeLaTeX warning: Redefining document command \oldstylenums with arg. spec. ‘m’

fontspecwarningsxetex

I updated my MiKTeX to the newest version a few days ago, and after this when I compile documents with the fontspec package included, there's a warning. For example:

\documentclass{article}
\usepackage{fontspec}

\setmainfont{Adobe Garamond Pro}

\begin{document}
  Hello, world!
\end{document}

Build Output shows:

*************************************************
* LaTeX warning: "xparse/redefine-command"
* 
* Redefining document command \oldstylenums with arg. spec. 'm' on line 107.
*************************************************

Why this happens? How to solve it?

Best Answer

It should be possible to silence this kind of messages via

\usepackage[log-declarations=false]{xparse}
\usepackage[quiet]{fontspec}

but the option to xparse is currently broken and has no effect. The version I'm referring is

xparse.sty 3471 2012-02-26

All these packages are quite new and developing, so warning messages can help debug problems. However, the message you're referring to is completely harmless.

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