test file:
==========================
\RequirePackage[l2tabu, orthodox]{nag}
\documentclass[a4paper,fontsize=11pt, oneside]{scrbook}
\begin{document}
test
\end{document}
==========================
$ hunspell -l -t -i utf-8 test.tex
l2tabu
test file:
==========================
\RequirePackage[l2tabu, orthodox]{nag}
\documentclass[a4paper,fontsize=11pt, oneside]{scrbook}
\begin{document}
test
\end{document}
==========================
$ hunspell -l -t -i utf-8 test.tex
l2tabu