Tab accelerator not working on Linux

[probablykasper]

Not sure if it's just happening for me, but Tab does not seem to work for menu bar accelerators on Linux. The shortcut shows up correctly as Tab in the menu, but doesn't trigger when I press Tab.

Judging by the source code, it looks like Tab should work.

I'm running Ubuntu 20.04.

[amrbashir]

related discussion Guake/guake#152

[amrbashir]

Guake solved this in Guake/guake#1902 by keeping a map of keybindings (aka accelerators) and their action, then listened to key-press event on the window and if it matched one of the keybindings, they manually execute the associated action. This is manual and I think they don't even rely on gtk menu accelerators at all.

I don't think we can do much here but tao users can listen to tao::WindowEvent::Key and execute their action if it matched their Tab accelerator.