color(lab ...) has been removed from CSS Color 4, leaving lab(...) as the single way to specify a color in the CIE Lab color space. We should remove color(lab ...).
Created attachment 430154 [details] Patch
Created attachment 430161 [details] Patch
Committed r278268 (238305@main): <https://commits.webkit.org/238305@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 430161 [details].
<rdar://problem/78673380>