```
% pandoc -t native
# hi _a
b_

# hi _c
c
^D
[ Header
    1 ( "hi-_a" , [] , [] ) [ Str "hi" , Space , Str "_a" ]
, Para [ Str "b_" ]
, Header
    1 ( "hi-_c" , [] , [] ) [ Str "hi" , Space , Str "_c" ]
, Para [ Str "c" ]
]
```