pandoc-3.10.1: test/command/11715.md
```
% pandoc -f native -t markdown -s
Pandoc Meta {unMeta = fromList [ ("format_version", MetaString "3.10") ] } []
^D
---
format_version: "3.10"
---
```
```
% pandoc -f native -t markdown -s
Pandoc Meta {unMeta = fromList [ ("format_version", MetaString "3.10") ] } []
^D
---
format_version: "3.10"
---
```