% pandoc -f html -t native
<figure>
  <img src="foo.png" title="voyage">
  <figcaption>bar</figcaption>
</figure>
^D
[Para [Image ("",[],[]) [Str "bar"] ("foo.png","fig:voyage")]]

% pandoc -f html -t native
<figure>
  <figcaption>bar</figcaption>
  <img src="foo.png" title="voyage">
</figure>
^D
[Para [Image ("",[],[]) [Str "bar"] ("foo.png","fig:voyage")]]

% pandoc -f html -t native
<figure>
  <img src="foo.png" title="voyage">
</figure>
^D
[Para [Image ("",[],[]) [] ("foo.png","fig:voyage")]]

% pandoc -f html -t native
<figure>
  <p><img src="foo.png" title="voyage"></p>
  <figcaption>bar</figcaption>
</figure>
^D
[Para [Image ("",[],[]) [Str "bar"] ("foo.png","fig:voyage")]]

% pandoc -f html -t native
<figure><img src="foo.png" title="voyage" alt="this is ignored"><figcaption>bar <strong>baz</strong></figcaption></figure>
^D
[Para [Image ("",[],[]) [Str "bar",Space,Strong [Str "baz"]] ("foo.png","fig:voyage")]]