I have a broken key on my Mac's keyboard and I need to remap it to some other key, by double press. Temporarily.
It's not a special but an alphabet letter one. I want to remap it this way:
"f" (broken) --> "double a"
How can one do it? Preferably without any third-party tool.
This hasn't worked - double a won't get replaced with f whenever I type "aa" anywhere on my laptop. I want it to replace double a with f on the fly.