```
% pandoc -f native -t textile
[Figure ("fig-id",[],[]) (Caption Nothing [Para [Str "Caption"]]) [Para [Image ("",[],[]) [] ("foo.png", "")]]]
^D
```
```
% pandoc -f native -t textile
[Figure ("fig-id",[],[]) (Caption Nothing []) [Para [Image ("",[],[]) [] ("foo.png", "")]]]
^D
```