KEYNAV:GtkMenu, GtkMenuItem ... (bug 53544)

["Padraig O'Briain" <Padraig Obriain Sun COM>]

I am assuming that we will implement the change that F10 will popup the first 
menu in the menu bar but leave the focus in the menu bar.

I am trying to understand what should happen with mnemonic keys in this 
situation.

Focus in menu bar
=================
Should the mnemonics for the menu items in the currently displayed menu work?
Should the mnemonics for items in the menu bar work? Should these be entered by 
Alt+key?

Focus in menu 
=============
I assume that entering the mnemonic character for any menu item should activate 
the menu item.
Should mnemonics for menu items in previous menus or menu bar work?

Padraig