LGTM1 The WebKit standards position was only filed yesterday, but this seems straightforward and aligns with spec+Firefox, so I don't think we should wait on it. In the unlikely event there is feedback, please ping this thread.
On Fri, Nov 7, 2025 at 9:44 AM Rune Lillesveen <[email protected]> wrote: > *Contact emails* > [email protected] > > *Specification* > https://www.w3.org/TR/SVG2/struct.html#UseElement > > *Summary* > Align the Blink implementation with the SVG2 specification for matching > CSS rules in <use> element trees. > > Match selectors against the <use> instantiation elements instead of the > originating element subtree. This means selectors will no longer match > ancestor and sibling elements outside the cloned subtree. More importantly, > state selectors like :hover will now start matching in <use> instances. > > *Blink component* > Blink>SVG > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ESVG%22> > > *Web Feature ID* > Missing feature > > *Motivation* > CSS selectors match against the wrong tree for <use> instantiations, which > means selectors do not match correctly for structural relationships and > user interaction state (see :hover issue that will be fixed shipping this > feature: https://crbug.com/40663285) > > *Initial public proposal* > *No information provided* > > *TAG review* > *No information provided* > > *TAG review status* > Not applicable > > *Risks* > > > *Interoperability and Compatibility* > Firefox has shipped the SVG2 behavior for years. Bug for WebKit: > https://bugs.webkit.org/show_bug.cgi?id=249080 > > *Gecko*: Shipped/Shipping ( > https://bugzilla.mozilla.org/show_bug.cgi?id=265894#c190) Shipped in > Firefox 56 > > *WebKit*: No signal ( > https://github.com/WebKit/standards-positions/issues/571) > > *Web developers*: Positive 44 votes on the crbug issue, and additional 5 > votes on the :hover bug https://crbug.com/40663285 > > *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* > *No information provided* > > *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/svg/linking/reftests/use-descendant-combinator-003.html > https://wpt.fyi/svg/struct/reftests/use-inheritance-001.svg > https://wpt.fyi/svg/struct/reftests/use-inheritance-nth-child-of.svg > https://wpt.fyi/svg/struct/reftests/use-inheritance-nth-last-child-of.svg > > https://wpt.fyi/svg/styling/use-element-attr-selector-transition.tentative.html > > https://wpt.fyi/svg/styling/use-element-id-selector-transition.tentative.html > > *Flag name on about://flags* > #enable-experimental-web-platform-features > > *Finch feature name* > Svg2Cascade > > *Rollout plan* > Will ship enabled for all users > > *Requires code in //chrome?* > False > > *Tracking bug* > https://crbug.com/40550039 > > *Estimated milestones* > Shipping on desktop 144 > Shipping on Android 144 > Shipping on WebView 144 > > *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/5134266027606016?gate=6607474169872384 > > This intent message was generated by Chrome Platform Status > <https://chromestatus.com/>. > > -- > Rune Lillesveen > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CACuPfeQQp_NW%3DnoTwk2jpcjGzMb6wFyqj4KGm%3DqpMVyAM767tg%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CACuPfeQQp_NW%3DnoTwk2jpcjGzMb6wFyqj4KGm%3DqpMVyAM767tg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAARdPYcTTt4PNoX7oxUT_bTN2QGhbELKgFK7M_ojnne1NZgTfQ%40mail.gmail.com.
