Daniel D. Beck

> Is the `by_compat_key` status influenced by the feature group status, or would it always be the same across features? Right now they are not influenced by the group status,...

The headline status refers to the status of a feature in the `web-features` package (as opposed to the per-key statuses given by the extended JSON release artifact or a status...

This is probably a dupe of https://github.com/GoogleChrome/webstatus.dev/issues/1040.

These should be marked as partially implemented ([see guideline](https://github.com/mdn/browser-compat-data/blob/main/docs/data-guidelines/index.md#non-functional-defined-names-imply-partial_implementation)). This has a noticeable incompatibility impact as compared to a plain non-implementation: In a non-implementer (as implied by `"version_added": false`): ```css...

@caugner > The guideline points to #3904 for additional background, which actually _removed_ `partial_implementation: true` from CSS properties that were recognized but had no effect. That was a particular workaround...

I'm 👎 toward any proposal that's going to make mirroring more opaque with new hidden behaviors. This might make PRs easier to review, but makes exploring the committed data worse....

Florian and I chatted a bit about this at the BCD call yesterday. And I've had some time to think about this more. I'll respond to your specific points below,...

https://github.com/mdn/browser-compat-data/pull/23631 purports to resolve this, but it does so in an unclear way for `object-position` and it does not resolve the issue for `object-fit`. It has also produced a problem...

https://github.com/mdn/browser-compat-data/pull/25354 did the "revert" part of https://github.com/mdn/browser-compat-data/issues/23586#issuecomment-2425049201; what remains is to create subfeatures for each of the replaced elements (and test and populate that data).

This sounds promising, but I'm not quite clear on how I'd distinguish between a feature that needs a fallback versus one that doesn't (or, say, what's graceful versus ungraceful degradation)....