The python script needs to be fixed: https://webkit-search.igalia.com/webkit/source/Source/WebCore/css/makeSelectorPseudoClassAndCompatibilityElementMap.py#37-43
Created attachment 432583 [details] Patch
Comment on attachment 432583 [details] Patch Can you also verify that -internal pseudo classes don't work on author stylesheet? I'm not sure what the status of that is.
Actually I see there is a test for that!
Created attachment 432584 [details] Patch
Committed r279408 (239273@main): <https://commits.webkit.org/239273@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 432584 [details].
<rdar://problem/79962739>