> Differences between the W3C HTML 5.2 spec and the WHATWG Living Spec: https://www.w3.org/wiki/HTML/W3C-WHATWG-Differences https://www.w3.org/wiki/HTML/W3C-WHA

> Differences between the W3C HTML 5.2 spec and the WHATWG Living Spec: https://www.w3.org/wiki/HTML/W3C-WHATWG-Differences https://www.w3.org/wiki/HTML/W3C-WHATWG-Differences FWIW, I'm pretty certain that is incomplete. It may well be the case that that is the set of deliberate changes from the WHATWG spec (at some revision), but we've had cases before where changes from the WHATWG spec have been copied only partially leading to the W3C spec, as published as a Recommendation (i.e., with two interoperable implementations) has been impossible to implement as written.