[2] Bug 10919 – Allow role="presentation" to override the default role of any element
( ( 版))
http://www.w3.org/Bugs/Public/show_bug.cgi?id=10919
[4] allow none on any element that allows presentation
(@sideshowbarker著, )
https://github.com/w3c/html-aria/commit/f36423affee6ed698976565a821bcb17879a2ae1
[5] allow role=none on all elements which support role=presentation · Issue #78 · w3c/html-aria
()
https://github.com/w3c/html-aria/issues/78
[6] Update allowed roles for <hr>
(scottaohara著, )
https://github.com/w3c/html-aria/commit/1c719104aa729fb21adb6d96b9da7074f74ccefd