APG 1.0 entry for accordion is unclear on focus order

Happy Thursday.

I am coding an accordion using the multi-selectable tab implementation recommendation from ARIA APG 1.0 (in preparation for coding an updated version for 1.1).
http://www.w3.org/TR/wai-aria-practices/#accordion

Looking at the documentation, it is unclear to me how to ensure that at least one of the tabs in the accordion is in focus order.
For a single-select tab the APG recommendation says the active tab should be in the focus order, simple.
There is no such recommendation for multi-select tabs in this spec.
The closest the spec comes to making a recommendation is describing the tab key behavior, but it assumes the focus is already on one of the tabs in the accordion.
It says that if focus is on a focusable element in a tabpanel, pressing tab will move the focus to the first interactive element in the next open tabpanel, or to the first focusable element outside of the accordion if no subsequent tabpanel is open.
This does not allow the focus to land on a tab.

The entry for shift-tab says "Generally the reverse of Tab."
>From that I conclude that:
With focus on a focusable element inside an expanded a tabpanel, pressing shift-tab will:
1. If a previous tab is expanded, focus is moved to the last interactive element in that tabpanel.
2. If not, focus will move to the previous focusable component outside of the accordion.

Neither of these recommendations results in the focus actually landing on a tab, which is essential for keyboard navigation to, and operating the accordion.
Am I missing something, or is this one of the things we are fixing in 1.1 (yes, our 1.1 recommendation for accordions will be both simpler and better).
Thanks
-B

Received on Thursday, 30 June 2016 11:38:22 UTC