pandoc-2.11.4: test/command/6993.md

```
% pandoc -f mediawiki -t native
'''Should be bold '''
^D
[Para [Strong [Str "Should",Space,Str "be",Space,Str "bold"]]]
```

```
% pandoc -f mediawiki -t native
''' Should be bold'''
^D
[Para [Strong [Str "Should",Space,Str "be",Space,Str "bold"]]]
```

```
% pandoc -f mediawiki -t native
'' Should be emph ''
^D
[Para [Emph [Str "Should",Space,Str "be",Space,Str "emph"]]]
```