Is it possible to enable rules only for specific keyboard layout (karabiner)?

[avatar-lavventura]

On Karabiner I am enabling multiples rules under its complex modifications setup, such as Emacs key bindings.

I was wondering is it possible to use those enables rules only for a specific keyboard layout such as U.S. and automatically disable those rules when I switch to an another keyboard layout.

Link: https://stackoverflow.com/q/60329520/2402577

[thoelze1]

Take a look at the device_if example and the Conditions documentation

[avatar-lavventura]

On my end actually I just want to disable Swap {} and [] when I am using Turkish keyboard but enable it when I am using U.S. keyboard.

I couldn't find the code for the examples on the first link. On which file should I make the changes, on ~/.config/karabiner/karabiner.json ?

[thoelze1]

So you have a rule called Swap {} and []? How did you add it?

[avatar-lavventura]

Usıng import with the help of this answer: ( https://stackoverflow.com/a/60286402/2402577 ). Like for coding I use U.S. keyboard but if I switch to different languagle it makes swapped characters upper case when I press . In turkish keyboard [ is assigned to ğ

[thoelze1]

If you imported the rule, then it is saved as a json file in ~/.config/karabiner/assets/complex_modifications/, as something like ~/.config/karabiner/assets/complex_modifications/1589318523.json. This json file stores the rules as elements in manipulators. To each of these manipulators elements, you need to add a conditions item that checks what language your keyboard is. I think you should use input_source_if for this.

So the original file looks like this:

{
  "description": "Swap {} and []",
  "manipulators": [
    {
      "type": "basic",
      "from": {
        "key_code": "open_bracket"
      },
      "to": [
        {
          "modifiers": ["left_shift"],
          "key_code": "open_bracket"
        }
      ]
    },
    ...
}

You should modify each of the manipulators so it looks something like this:

{
  "description": "Swap {} and []",
  "manipulators": [
    {
      "type": "basic",
      "conditions": [
        {
          "type": "input_source_if",
          "input_sources": [
            {
              "language": "en"
            }
          ]
        }
      ], 
      "from": {
        "key_code": "open_bracket"
      },
      "to": [
        {
          "modifiers": ["left_shift"],
          "key_code": "open_bracket"
        }
      ]
    },
    ...
}

This way, if the input language is English, then the brackets will be swapped. Otherwise, the swapping won't happen. If this is the opposite of what you want, then you can replace the en with tr (I think). I haven't tried this code but I think it's what you want.

[avatar-lavventura]

Thanks @thoelze1, it took some time to code it in json but it works. I just added if cases for the en.

I share the gist link in case if someone might need it in future: https://gist.github.com/avatar-lavventura/3c6f3b07a08c66a5bfd5222617d2729c