Isolation not fully supported

[r12a]

Safari still doesn't apply bidi isolation to an element that has a dir attribute (although a shim based on CSS works fine).

This creates significant issues for managing bidirectional text.

(The old Edge still doesn't support directional isolation, but Edge has now moved to Blink, which does support it.)

[r12a]

The first comment in this issue contains text that will automatically appear in the Adlam gap-analysis document as a subsection with the same title as this issue. Any edits made to that comment will be immediately available in the document. Proposals for changes or discussion of the content can be made in comments below this point.

[r12a]

Safari does now support this. Test results and links to tests can be found at https://w3c.github.io/i18n-tests/results/the-dir-attribute-isolation

Therefore, i'm closing this item.