tomayac’s Twitter Archive—№ 13,847

@davidxcheng @ChromeDevTools @AMPhtml @jaffathecake @mathias This was my initial misreading as well, but as @jaffathecake wrote in github.com/whatwg/html/issues/5144, it should probably say the following instead: "If the document is an HTML document, attribute names are considered equivalent if they are an ASCII case-insensitive match".