LGTM3
On 9/29/25 11:20 a.m., 'Dan Clark' via blink-dev wrote:
LGTM2
On Monday, September 29, 2025 at 11:20:09 AM UTC-7
[email protected] wrote:
LGTM1
On Thursday, September 25, 2025 at 11:39:17 PM UTC-7 Chromestatus
wrote:
*Contact emails*
[email protected]
*Explainer*
None
*Specification*
https://www.w3.org/TR/css-fonts-4/#font-language-override-prop
*Summary*
This feature introduces support for the font-language-override
CSS property in Chromium. The property allows developers to
override the system language used for OpenType glyph
substitution by specifying a four-character language tag
directly in CSS. This enables fine-grained typographic
control, particularly useful for multilingual content or fonts
with language-specific glyph variants.
*Blink component*
Blink>Fonts
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EFonts%22>
*Web Feature ID*
font-language-override
<https://webstatus.dev/features/font-language-override>
*TAG review*
None
*TAG review status*
Not applicable
*Risks*
*Interoperability and Compatibility*
None
/Gecko/:
Shipped/Shipping (https://bugzilla.mozilla.org/show_bug.cgi?id=1347821)
/WebKit/: No
signal (https://github.com/WebKit/standards-positions/issues/556)
/Web developers/: Positive 13 users have indicated that they
are affected by this issue and its related duplicates, as
noted in https://issues.chromium.org/issues/40891154 and
https://issues.chromium.org/issues/41170551
/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? None
*Debuggability*
Existing DevTools capabilities already cover this.
*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>?*
Yeshttps://wpt.fyi/results/css/css-fonts/font-language-override-01.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-fonts/font-language-override-01.html?label=experimental&label=master&aligned>
https://wpt.fyi/results/css/css-fonts/font-language-override-02.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-fonts/font-language-override-02.html?label=experimental&label=master&aligned>
https://wpt.fyi/results/css/css-fonts/font-language-override-03.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-fonts/font-language-override-03.html?label=experimental&label=master&aligned>
https://wpt.fyi/results/css/css-fonts/parsing/font-language-override-computed.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-fonts/parsing/font-language-override-computed.html?label=experimental&label=master&aligned>
https://wpt.fyi/results/css/css-fonts/parsing/font-language-override-invalid.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-fonts/parsing/font-language-override-invalid.html?label=experimental&label=master&aligned>
https://wpt.fyi/results/css/css-fonts/parsing/font-language-override-valid.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-fonts/parsing/font-language-override-valid.html?label=experimental&label=master&aligned>
*Flag name on about://flags*
*Finch feature name*
FontLanguageOverride
*Rollout plan*
Will ship enabled for all users
*Requires code in //chrome?*
False
*Tracking bug*
https://issues.chromium.org/issues/41170551
*Estimated milestones*
Shipping on desktop 142
Shipping on Android 142
Shipping on WebView 142
Shipping on iOS 142
*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). None
*Link to entry on the Chrome Platform Status*
https://chromestatus.com/feature/5149766073843712?gate=4807908353245184
This intent message was generated by Chrome Platform Status
<https://chromestatus.com>.
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