Marko Version: 4.18.4

Details

I use some facebook markup that I let facebook parse from DOM:

      <fb:login-button 
        auto-logout-link="false"
        button-type="continue_with" 
        size="large"
        scope="public_profile,email" 
        use-continue-as="true">
      </fb:login-button>

In my onMount I then let the facebook API do it's thing with th

Relevant spec sections:

https://drafts.csswg.org/selectors-4/#the-dir-pseudo
https://html.spec.whatwg.org/multipage/semantics-other.html#selector-ltr

The interesting cases to test are from the definition of "directionality" in HTML:
https://html.spec.whatwg.org/multipage/dom.html#the-directionality

• element with dir="ltr" matches :dir(ltr) (#26159)
• root element without `