packages feed

pandoc-3.14: test/command/11961.md

```
% pandoc -f html -t docx -o - | pandoc -f docx -t html
<p><em>Emph <em>in emph <em>flip</em> flops</em></em> and more</p>
^D
<p><em>Emph</em> in emph <em>flip</em> flops and more</p>

```