Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 41a9dfe94ed23b7aef4c13e21d891aaba0e7925b
      
https://github.com/WebKit/WebKit/commit/41a9dfe94ed23b7aef4c13e21d891aaba0e7925b
  Author: Andrew Martinez <[email protected]>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    A LayoutTests/fast/css/min-max-size-shorthands-disabled-expected.txt
    A LayoutTests/fast/css/min-max-size-shorthands-disabled.html
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-invalid-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-invalid.html
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-shorthand-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-shorthand.html
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-valid-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-valid.html
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-invalid-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-invalid.html
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-shorthand-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-shorthand.html
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-valid-expected.txt
    A 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-valid.html
    M 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/size-shorthand-serialization.tentative-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/size-shorthand-serialization.tentative.html
    M Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml
    M Source/WebCore/css/CSSProperties.json
    M Source/WebCore/css/ShorthandSerializer.cpp
    M Source/WebCore/css/StyleProperties.cpp

  Log Message:
  -----------
  [css-sizing] Add `min-size` and `max-size` shorthands
rdar://187494905
https://bugs.webkit.org/show_bug.cgi?id=324272

Reviewed by Tim Nguyen.

Add min-size and max-size shorthands for the min-width/min-height and
max-width/max-height longhands, using the same CoalescingPair pattern as
the existing size shorthand.

The longhands do not collapse into the shorthands when serializing, matching
the behavior of width/height and size. Neither shorthand
collides with an @page descriptor, so no page-size remapping is needed.

Tests: fast/css/min-max-size-shorthands-disabled.html
       
imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-invalid.html
       
imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-shorthand.html
       
imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-valid.html
       
imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-invalid.html
       
imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-shorthand.html
       
imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-valid.html

* LayoutTests/fast/css/min-max-size-shorthands-disabled-expected.txt: Added.
* LayoutTests/fast/css/min-max-size-shorthands-disabled.html: Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-invalid-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-invalid.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-shorthand-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-shorthand.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-valid-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/max-size-valid.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-invalid-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-invalid.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-shorthand-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-shorthand.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-valid-expected.txt:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/parsing/min-size-valid.html:
 Added.
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/size-shorthand-serialization.tentative-expected.txt:
* 
LayoutTests/imported/w3c/web-platform-tests/css/css-sizing/size-shorthand-serialization.tentative.html:
* Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml:
* Source/WebCore/css/CSSProperties.json:
* Source/WebCore/css/ShorthandSerializer.cpp:
(WebCore::ShorthandSerializer::serialize):
* Source/WebCore/css/StyleProperties.cpp:
(WebCore::canUseShorthandForLonghand):

Canonical link: https://commits.webkit.org/321699@main



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