'Taggedblock' environment can't be used in \newcommand

[mmis-ptf]

It looks like with verbatim environment using of 'taggedblock' environment in \newcommand causes scanning error (File ended while scanning use of \next)

\documentclass[a4paper, oneside, 12pt]{extreport}
\usepackage{tagging}
\newcommand{\mycommand}{%
  Some text.
  \begin{taggedblock}{tag}
    Tagged text.
  \end{taggedblock}
}

\begin{document}
  \mycommand{}
\end{document}

[FrankMittelbach]

What works though in this case is if you drop the \begin and \end, ie

\newcommand{\mycommand}{%
  Some text.
  \taggedblock{tag}
    Tagged text.
  \endtaggedblock
}

However, the taggedblock is really only meant for top-level document not inside definitions and in your example it is rather pointless, because its feature (to allow \verb) is canceled by the fact that it is inside the argument of your command definition.

Also please note that Brent unfortunately passed away in 2021 and this package is orphaned.