wpautop bad code

[jim5471]

post content

<a href="document.htm"><div>Text</div></a>

generated markup - note wrong HTML

<p><a href="document.htm"></p>
<div>Text</div>
<p></a></p>

related: #40135

[noisysocks]

I can reproduce this. Possibly same root cause as #27350.

Picked through the diff. Looks like this only touches formatting.php, but wpautop also has a JS version in @wordpress/autop that usually needs the same fix to stay in sync.

The other thing on wpautop is regressions. Do the existing Tests_Formatting_wpAutop cases still pass, or just the new ones? Happy to run it if you haven't.

Thanks @wpankit — you are right about keeping the JavaScript implementation synchronized.

The @wordpress/autop source is maintained in Gutenberg (the wordpress-develop dist files are ignored generated output), so I added the matching implementation and regression coverage in WordPress/gutenberg#80232: ​https://github.com/WordPress/gutenberg/pull/80232

Validation completed:

• Full PHP Tests_Formatting_wpAutop class: 26 tests, 36 assertions passed.
• Targeted PHP ticket group: 1 test, 2 assertions passed.
• Full JavaScript packages/autop/src/test/index.test.ts: 19/19 tests passed.
• JavaScript ESLint and the packages/autop TypeScript check passed.

So both the existing PHP and JavaScript regression suites pass, not only the new cases.