insertAdjacentHTML should return a NodeList

I was referred here by annevk as WHATWG deals with insertAdjacentElement() spec, whilst w3c manages insertAdjacentHTML() spec - a bit confusing to a newcomer :)

At the moment of writing insertAdjacentElement() returns the resulting element, yet insertAdjacentHTML() doesn't have a return value. In my mind it should return a NodeList if successful. Has this been discussed in the past? Having a return (NodeList or otherwise) removes the need to do a querySelector/querySelectorAll/getElementByID after insertion - making it cleaner to use.

It makes more sense to me than the insertAdjacentElement() use case, where you already have a pre-existing reference to the attached element - however insertAdjacentHTML() starts from scratch, necessitating the lookup after insertion if you want to reference it later.

Start by reading the insertAdjacentHTML and insertAdjacentElement specifications referenced in the issue, then review the DOM Parsing repository's current specification entry points. Done means the standards discussion reaches a documented decision about whether insertAdjacentHTML should return a value and what that value should be.