Bug 258258

Summary:	Update `:empty` pseudo-class to also match elements with only whitespace
Product:	WebKit	Reporter:	Niklas Ljunglöf <slipped-gazette.0w>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ntim, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	All
OS:	All

Description Niklas Ljunglöf 2023-06-17 18:29:52 PDT

According to Selectors Level 4 (https://www.w3.org/TR/selectors-4/#the-empty-pseudo), the `:empty` pseudo-class should match whitespace-only elements. Currently it only matches elements with no child elements or content nodes.

Comment 1 Tim Nguyen (:ntim) 2023-06-17 19:09:01 PDT

See also: https://github.com/w3c/csswg-drafts/issues/8106

Comment 2 Radar WebKit Bug Importer 2023-06-24 18:30:16 PDT

<rdar://problem/111273263>