keymap_mac.json

{
  "title": "Map Option+Backward-delete to Ctrl+Backward-Delete.",
  "rules": [
    {
      "description": "Map Option+Backward-delete to Ctrl+Backward-Delete. (delete current word).",
      "type": "basic",
      "manipulators": [
        {
          "from": {
            "key_code": "delete_or_backspace",
            "modifiers": {
              "mandatory": [
                "option"
              ]
            }
          },
          "to": [
            {
              "key_code": "delete_or_backspace",
              "modifiers": [
                "control"
              ]
            }
          ]
        }
      ]
    }
  ]
}