packages feed

pandoc-3.1.1: test/command/8638.md

# Beamer tables must not use longtable footer
```
% pandoc -t beamer
| fruit   | price |
|---------|------:|
| apple   | 2.05  |
| oranges | 4.25  |
^D
\begin{frame}
\begin{longtable}[]{@{}lr@{}}
\toprule\noalign{}
fruit & price \\
\midrule\noalign{}
\endhead
apple & 2.05 \\
oranges & 4.25 \\
\bottomrule\noalign{}
\end{longtable}
\end{frame}
```