Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 2cecd19a550c17d516cccd728888aba0098e6263
https://github.com/WebKit/WebKit/commit/2cecd19a550c17d516cccd728888aba0098e6263
Author: Ahmad Saleem <[email protected]>
Date: 2025-12-02 (Tue, 02 Dec 2025)
Changed paths:
A
LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/at-property-optional-initial-value-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/at-property-optional-initial-value.html
M Source/WebCore/css/parser/CSSVariableParser.cpp
Log Message:
-----------
The `initial-value` descriptor when registering Custom Properties can be
optional
https://bugs.webkit.org/show_bug.cgi?id=276223
rdar://131288198
Reviewed by Antti Koivisto.
This patch aligns WebKit with Web Specification [1]:
[1]
https://drafts.css-houdini.org/css-properties-values-api/#initial-value-descriptor
"If the value of the syntax descriptor is the universal syntax definition, then
the initial-value descriptor is optional. If omitted, the initial value of the
property is the guaranteed-invalid value."
This patch removes early return in cases of parsing declaration value and
initial
value for universal syntax.
Test:
imported/w3c/web-platform-tests/css/css-properties-values-api/at-property-optional-initial-value.html
*
LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/at-property-optional-initial-value-expected.txt:
Added.
*
LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/at-property-optional-initial-value.html:
Added.
* Source/WebCore/css/parser/CSSVariableParser.cpp:
(WebCore::CSSVariableParser::parseDeclarationValue):
(WebCore::CSSVariableParser::parseInitialValueForUniversalSyntax):
Canonical link: https://commits.webkit.org/303757@main
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