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I would like my document to have clickable hyperlinks inside \overset environments. I'm using XeLaTeX because of the fonts…

This is a (rather) minimal example:

\documentclass[a4paper, 12pt]{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage[xetex, colorlinks=true, citecolor=blue, linkcolor=blue]{hyperref}

\begin{document}

\begin{equation}
    a = b \label{eq} \tag{$\ast$}
\end{equation}

\[ \eqref{eq} \] % working hyperlink here.

\[ c = a \overset{\eqref{eq}}{=} b \] % existing but non-clickable hyperlink here.

\end{document}

Any help is greatly appreciated!

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  • 1
    Welcome to TeX.SE, and thanks for providing a complete MWE. Interesting that it works fine with pfdLaTeX, but not XeLaTeX.
    – Peter Grill
    Feb 26, 2013 at 3:43
  • @PeterGrill Thanks for pointing that out! I tried to compile my document with LuaLaTeX and amazingly it simply worked and showed the correct hyperlinks! While this doesn't explain the behaviour of XeLaTeX, it's a simpler workaround than I could have dreamed of! Cheers!
    – sjakobi
    Feb 26, 2013 at 4:12
  • If you use (\ref{eq}) rather than \eqref{eq} it will work, even with xelatex
    – Ari Brodsky
    Feb 26, 2013 at 4:56
  • 2
    The problem occurs any time you have \text{\ref{eq}} in a math size other than \displaystyle. So in display math mode you need a superscript to produce the problem (\overset implicitly creates a superscript, and \eqref uses the \textup command that unravels to \text), but in inline math the problem occurs without a superscript.
    – Ari Brodsky
    Feb 26, 2013 at 7:43
  • 2
    $ c = a \overset{\mbox{\scriptsize\eqref{eq}}}{=} b $ works.
    – user4686
    Feb 26, 2013 at 8:21

1 Answer 1

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This is a workaround for XeLaTeX as pointed out by @user700902:

\documentclass[a4paper, 12pt]{article}
\usepackage{amsmath}
\usepackage[xetex, colorlinks=true, linkcolor=blue]{hyperref}

\begin{document}

\begin{equation}
    a = b \label{eq} \tag{$\ast$}
\end{equation}

\[ c  = a \overset{\mbox{\scriptsize\eqref{eq}}}{=} b\] % thanks user700902 

\end{document}

I however chose to use LuaLaTeX, which didn't require any change of the source code.

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