`NoHyper` environment could not be nested

[lvjr]

From TeXackers/tabularray#620

NoHyper environment in hyperref could not be nested. In the following example, the last link is still disabled.

\documentclass{article}
\usepackage{hyperref}
\hypersetup{colorlinks=true,linkcolor=blue}
\begin{document}

\hypertarget{test}{Target}

\hyperlink{test}{Link}

\begin{NoHyper}
\hyperlink{test}{Link}
\end{NoHyper}

\hyperlink{test}{Link}

\begin{NoHyper}
A
\begin{NoHyper}
\hyperlink{test}{Link}
\end{NoHyper}
C
\end{NoHyper}

\hyperlink{test}{Link}

\end{document}

[u-fischer]

From the code it is clear that you can not nest them, but I have no idea why the code changes \hyper@link globally. But there is also a \stop@hyper command which does all redefinitions locally.