LGTM
On 2/6/25 5:32 PM, Mason Freed wrote:
{Highlighting this since it isn't obvious from this intent:
this is a deprecation trial for sites that might be broken by
the select parser relaxation, and would like extra time to
migrate to the new behavior. The OT will restore the *old*
behavior, while the feature launches in M134 and changes
Chrome to the *new* behavior. }
Contact emails
jar...@chromium.org, mas...@chromium.org
Explainer
https://open-ui.org/components/customizableselect
Specification
https://github.com/whatwg/html/pull/10557
Summary
This change makes the HTML parser allow additional tags in <select>
besides <option>, <optgroup>, and <hr>. This change is in support of
the customizable <select> feature but is being shipped first because
it can be done separately and has some compat risk which I'd like to
get feedback on. This feature is gated by the temporary policy
(SelectParserRelaxationEnabled). This is a temporary transition
period, and the policy will stop working on milestone M141.
Customizable select explainer:
https://open-ui.org/components/customizableselect/ I did a compat
analysis and determined that the vast majority of sites which would
see the effects of the parser changes would not have their behavior
changed. More details here:
https://github.com/whatwg/html/issues/10310 If there are major issues
with this change, I will reassess and make adjustments to the parser
as needed.
Blink component
Blink>HTML>Parser
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EHTML%3EParser%22>
TAG review
https://github.com/w3ctag/design-reviews/issues/1007
TAG review status
Pending
Risks
Interoperability and Compatibility
I believe there is low interop risk because other vendors are
reviewing the proposal in WHATWG and are not objected to changing the
parser behavior here. There is a compat risk if websites are relying
on the old parser behavior. As I mentioned in the main description, I
have done an analysis and based on the websites I have investigated I
believe there is low risk. If we encounter issues then I will adjust
the parser as needed.
/Gecko/: Positive
(https://github.com/mozilla/standards-positions/issues/1086) Positive
of experimenting:
https://github.com/whatwg/html/issues/10310#issuecomment-2189178702
/WebKit/: No signal
(https://github.com/WebKit/standards-positions/issues/414)
/Web developers/: No signals
(https://github.com/mozilla/standards-positions/issues/1086)
/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
Goals for experimentation
Ongoing technical constraints
While the OT is going, the old parser behavior will need to be
maintained. This isn't a significant maintenance burden.
Debuggability
None
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
Flag name on about://flags
SelectParserRelaxation
Finch feature name
SelectParserRelaxation
Requires code in //chrome?
False
Tracking bug
https://crbug.com/335456114
Estimated milestones
Shipping on desktop 134
Origin trial desktop first 134
Origin trial desktop last 140
DevTrial on desktop 128
Shipping on Android 134
Origin trial Android first 134
Origin trial Android last 140
DevTrial on Android 128
Shipping on WebView 134
Origin trial WebView first 134
Origin trial WebView last 140
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5145948356083712?gate=5084392347926528
Links to previous Intent discussions
Intent to Ship:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAK6btw%2B2u4-MY3c2x5uci_dOJWw8UdDNGfr_BiSfNESQwmPh5w%40mail.gmail.com
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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