autoref sometimes fails, a fix

Hi

The following MWE shows that (TL2023) autoref sometimes fails when used with mathtools and the showonlyrefs

\documentclass{article}
\usepackage{mathtools}
\mathtoolsset{showonlyrefs}
\usepackage[colorlinks]{hyperref}
\begin{document}
\section{Test}
\label{sec:test}
\begin{equation}
\label{eq:mathtools-autoref-solved:1}
  \int f dx =0
\end{equation}
\begin{equation}
\label{eq:mathtools-autoref-solved:2}
  a=b
\end{equation}
\subsection{Equation}
\label{sec:equation}
See  \autoref{eq:mathtools-autoref-solved:1} and \autoref{sec:test}
\subsection{Section}
\label{sec:section}
\autoref{sec:test}
\end{document}

a fix was proposed in fix

And consists in adding

\usepackage{xpatch}
\makeatletter
\xpretocmd\HyRef@autoref{\noeqref{#2}}{}{}% kleiner Hack
\makeatother

After \usepackage[colorlinks]{hyperref}

Could that this patch somehow be included in future releases of hyperref?

I will also open an issue on the mathtools github page.

Thanks

Uwe Brauer

Start by compiling the provided MWE with TL2023, mathtools, showonlyrefs, and hyperref, then inspect the \HyRef@autoref entry point. Compare the reported xpatch workaround against the failure and verify its compatibility. Done means a confirmed fix suitable for inclusion in a future hyperref release, with a regression case for the MWE.