5.1 is not stable though. It is based on scripts which try to copy from whatwg/html, but they are not very smart and several sections have become nonsensical because of this. It doesn't seem suitable as a reference by serious specs.
From: Mike West <mkwst@google.com>
Sent: Oct 7, 2015 03:42
To: Steve Faulkner
Cc: Wendy Seltzer; public-webappsec@w3.org; Webapps WG
Subject: Re: Reminder regarding normative references
On Wed, Oct 7, 2015 at 9:30 AM, Steve Faulkner <faulkner.steve@gmail.com<mailto:faulkner.steve@gmail.com>> wrote:
hi mike, i think you will find your example is in the W3C HTML 5.1:
http://www.w3.org/TR/html51/webappapis.html#creation-url
not saying there aren't other examples that would be concrete.
I am pleasantly surprised!
I assume this means that I ought to be reference HTML 5.1 and not 5 in whatever snapshots WebAppSec produces?
-mike