pandoc/test/command/4819.md

```
% pandoc -f markdown -t native -s
---
foo: 42
...
^D
Pandoc
  ( Meta
    { unMeta = fromList [ ( "foo", MetaInlines [ Str "42" ] ) ] }
  ) []
```

```
% pandoc -f markdown -t native -s
---
foo: true
...
^D
Pandoc
  ( Meta { unMeta = fromList [ ( "foo", MetaBool True ) ] } ) []
```

```
% pandoc -f markdown -t native -s
---
foo: True
...
^D
Pandoc
  ( Meta { unMeta = fromList [ ( "foo", MetaBool True ) ] } ) []
```

```
% pandoc -f markdown -t native -s
---
foo: FALSE
...
^D
Pandoc
  ( Meta { unMeta = fromList [ ( "foo", MetaBool False ) ] } ) []
```

```
% pandoc -f markdown -t native -s
---
foo: no
...
^D
Pandoc
  ( Meta
    { unMeta = fromList [ ( "foo", MetaInlines [ Str "no" ] ) ] }
  ) []
```