Spec PR: https://github.com/whatwg/html/pull/4383 Spec changes are spread throughout the form elements section of HTML, plus a good amount in https://html.spec.whatwg.org/multipage/custom-elements.html#the-elementinternals-interface Tests PR: https://github.com/web-platform-tests/wpt/pull/15740 Mosts tests are in https://github.com/web-platform-tests/wpt/tree/master/custom-elements/form-associated Depends on https://bugs.webkit.org/show_bug.cgi?id=197960
<rdar://problem/91310336>
Pull request: https://github.com/WebKit/WebKit/pull/4988
Committed 258561@main (8ab7fbc063ef): <https://commits.webkit.org/258561@main> Reviewed commits have been landed. Closing PR #4988 and removing active labels.
Re-opened since this is blocked by bug 250601
Relanded in https://webkit.org/b/250687