Re: [dom] setAttributeNode and setAttributeNodeNS can be an aliases (#117)

Yes, keeping only the `setAttributeNodeNS` behavior sums it up nicely.

Only `setAttributeNode` calls where the Attr object has a non-lowercase localName would be affected, and you can get those from `createAttributeNS` or cloning attributes from a non-HTML element/document. Then the risk would be that the code depends on other attributes being removed, e.g. by calling `getAttribute` and assuming it will return the new attribute's value.

This all seems similar in risk to making `createAttribute` lowercase its input, i.e. a bit far-fetched.

---
Reply to this email directly or view it on GitHub:
https://github.com/whatwg/dom/issues/117#issuecomment-158973893