\input regression-test.tex
\documentclass{article}
\usepackage{osglecture-modes}
\usepackage{semcat}
\FinalizeLectureModes

\begin{document}
\START
\IfLectureModeTF{article}{\TYPE{article-active=yes}}{\TYPE{article-active=no}}
\IfLectureModeTF{slides}{\TYPE{slides-active=yes}}{\TYPE{slides-active=no}}

\begin{SemCatMark}[mode=slides,category=B]
should not appear
\end{SemCatMark}
\TYPE{after-hidden-box=reached}

\begin{SemCatMark}[mode=article,category=B]
should appear
\end{SemCatMark}
\TYPE{after-shown-box=reached}

\begin{SemCatMark}[category=C]
unconditional
\end{SemCatMark}
\TYPE{after-unconditional-box=reached}

\SemCatDefine{E}[title={Bar style}, style=bar]
\begin{SemCatMark}[category=E]
first paragraph of a bar-styled block, spanning several lines of
repeated text repeated text repeated text repeated text repeated text.

second paragraph, still inside the same barred block.
\end{SemCatMark}
\TYPE{after-bar-box=reached}

\SemCatDefine{F}[
  title={Mode-varied}, style=box,
  variants={ slides = {style=bar} }
]
\begin{SemCatMark}[category=F]
active mode is article, so this stays a box, not the slides bar variant.
\end{SemCatMark}
\TYPE{after-variant-box=reached}

\TYPE{done=yes}
\END
\end{document}