packages feed

pandoc-3.0: test/command/7743.md

```
% pandoc -f markdown+mark -t html
==Hi==
^D
<p><mark>Hi</mark></p>
```

```
% pandoc -f markdown+mark -t latex
==Hi==
^D
\hl{Hi}
```

```
% pandoc -f markdown+mark -t rst
==Hi==
^D
:mark:`Hi`
```

```
% pandoc -f html -t markdown+mark
<mark>Hi</mark>
^D
==Hi==
```

```
% pandoc -f html -t markdown
<mark>Hi</mark>
^D
[Hi]{.mark}
```

```
% pandoc -f rst -t markdown+mark
:mark:`Hi`
^D
==Hi==
```

```
% pandoc -f markdown+mark -t docx -o - | pandoc -f docx -t markdown+mark
==Hi==
^D
==Hi==
```

```
% pandoc -f latex -t markdown+mark
\hl{Hi}
^D
==Hi==
```