Contact emails

[email protected]

Explainer

https://github.com/w3c/csswg-drafts/blob/main/css-cascade-5/revert-rule-explainer.md

Specification

https://drafts.csswg.org/css-cascade-5/#revert-rule-keyword

Summary

The revert-rule keyword rolls back the cascade to the previous rule,
similar to how revert-layer rolls back the cascade to the previous layer.
For example:

div { color: green; }

div { color: revert-rule; /* Effectively green */ }

This is especially useful in combination with conditionals, as it allows
eliminating the current rule if some condition is not met:

div {

  display: if(style(--layout: fancy): grid; else: revert-rule);

}

Blink component

Blink>CSS
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ECSS%22>

Web Feature ID

No information provided

Motivation

No information provided

Initial public proposal

https://github.com/w3c/csswg-drafts/issues/10443

TAG review

https://github.com/w3ctag/design-reviews/issues/1193 (Recently filed)

TAG review status

Pending

Risks


Interoperability and Compatibility

No information provided

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/1358)
(Recently filed)

WebKit: No signal (https://github.com/WebKit/standards-positions/issues/617)
(Recently filed)

Web developers: No signals

Other signals:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that
it has potentially high risk for Android WebView-based applications?

No information provided


Debuggability

The new keyword is clickable, leading to the reverted-to declaration.

Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, ChromeOS, Android, and Android WebView)?

Yes

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?

Yes

https://wpt.fyi/results/css?label=master&label=experimental&aligned&q=revert-rule

Flag name on about://flags

No information provided

Finch feature name

CSSRevertRule

Rollout plan

Will ship enabled for all users

Requires code in //chrome?

False

Tracking bug

https://issues.chromium.org/issues/393582263

Estimated milestones

Shipping on desktop

148

Shipping on Android

148

Shipping on WebView

148

Note: This I2S is targeting 148 (next milestone + 1) to give other vendors
and TAG a reasonable time window to raise any concerns.

Anticipated spec changes

Open questions about a feature may be a source of future web compat or
interop issues. Please list open issues (e.g. links to known github issues
in the project for the feature specification) whose resolution may
introduce web compat/interop risk (e.g., changing to naming or structure of
the API in a non-backward-compatible way).

No information provided

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5146458504429568?gate=5104230520193024

Links to previous Intent discussions

Intent to Prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAKFBnUrPRGxEbO1Uz3NnLJongnyknP%2BQ3zTRdpP%3DeFEJiza-Zg%40mail.gmail.com


This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.

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