This is not really much possible right now from an extension without changes to mutter.
However, the dock supports a key combination (Super+Q by default) to see the accelerator numbers, so I hope this is enough to get what you need.
This is not really much possible right now from an extension without changes to mutter.
However, the dock supports a key combination (Super+Q by default) to see the accelerator numbers, so I hope this is enough to get what you need.