pandoc/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" ]
    ]
]
```