pandoc-2.0: test/command/3407.md

```
% pandoc -f native -t rst
[Para [Span ("",[],[("role","foo")]) [Str "text"]]]
^D
:foo:`text`
```

```
% pandoc -f rst -t native
:foo:`text`
^D
[Para [Span ("",[],[("role","foo")]) [Str "text"]]]
```