Wikimedia Bugzilla is closed!

Extension tags in plain text content should be escaped in the serializer:

echo 'some <section>foo</section>' | node parse --html2wt --extensions section
some <section>foo</section>

Expected output:
some <nowiki><section></nowiki>foo<nowiki></section></nowiki>

Alternative expected output:
&lt;section&gt;foo&lt;/section&gt;

Fixing this will break round-tripping of section tags, which are a special case as <section> is also an HTML5 tag. See bug 47936 for details on that aspect.