keybindingskeyboardmacos
After looking it up I discover I can permanently change the behavior of the fn key – How do you make the fn keyboard button work like a Ctrl button?
But I’d like this to be a conditional change. Specifically, I want the fn key on my macbook keyboard to behave exactly like control except for the fn keys that appear in the touchbar, I want it to still show the fn keys (f1, f2, f3, etc)
Is this possible on macOS?
Here's how you can get ⌃ Control+arrow keys to work like you describe. Copy the following property list into ~/Library/KeyBindings/DefaultKeyBinding.dict (you can create the directory if it doesn't already exist):
{
"^\UF703" = ("moveWordForward:", "moveWordForward:", "moveWordBackward:");
"^$\UF703" = ("moveWordForwardAndModifySelection:", "moveWordForwardAndModifySelection:", "moveWordBackwardAndModifySelection:");
}
This will set up ⌃ Control+arrow to navigate to the beginning of the next word (by using OS X's normal navigation three times: to the end of the current word, end of the next word, then back to the beginning of the next word). I also included a version that works with ⇧ Shift so you can select text as you go.
Caveat: this will only work in Cocoa apps, but I think the normal ⌥ Option+arrow navigation does too. Also, make sure to relaunch your apps!
Download and install Karabiner
Open Karabiner Elements and set the Target Device in the dropdown
Map fn to left_control and left_control to fn as below
Best Answer
Consider this tool, perhaps it can solve your problem
https://pqrs.org/osx/karabiner/