In Firefox, I want to change the "ctrl-1" keyboard shortcut (that brings up the first tab in the browse) to the key sequence "ctrl,ctrl,1", that is press "ctrl", then "ctrl" again and then "1".
Does anyone know which configuration items, add-ons (and anything else) I need to change in order to accomplish this?
If you are working in Linux, you might be able to capture the key-down and key-up events of the CTRL key. Even though Ctrl technically is a modifier, it still fires individual events. Visible through the xev command like this for down, then up:
KeyPress event, serial 37
state 0x10
KeyRelease event, serial 37
state 0x14
Key events can also be captured by Python scripts, in case you want to cook up something.
This is impossible to do.
The Ctrl key is a modifier that gets added to the next key
to be pressed. It's not a key by itself. This means that
Ctrl+1 just sends to Firefox (or any process)
the character 1 with an indication that Ctrl was pressed when the 1
key was pressed.
Therefore pressing Ctrl twice will not have any effect different than pressing it once. The modifier indication is only added once.
You could use instead of CTRL some other modifier key, such as Alt, or perhaps Ctrl-F1, or any other key combination. The add-on Shortkeys could help.
