karabiner elements 自定义切换输入法规则

karabiner.json

{
    "global": {
        "check_for_updates_on_startup": false,
        "show_in_menu_bar": false
    },
    "profiles": [
        {
            "complex_modifications": {
                "rules": [
                    {
                        "description": "短按left_shift切换中英文",
                        "manipulators": [
                            {
                                "from": {
                                    "key_code": "left_shift",
                                    "modifiers": { "optional": ["any"] }
                                },
                                "parameters": {
                                    "basic.to_if_alone_timeout_milliseconds": 250,
                                    "basic.to_if_held_down_threshold_milliseconds": 250
                                },
                                "to": [
                                    {
                                        "key_code": "left_shift",
                                        "lazy": true
                                    }
                                ],
                                "to_if_alone": [
                                    {
                                        "hold_down_milliseconds": 10,
                                        "key_code": "f18"
                                    }
                                ],
                                "to_if_held_down": [{ "key_code": "left_shift" }],
                                "type": "basic"
                            }
                        ]
                    }
                ]
            },
            "devices": [
                {
                    "identifiers": { "is_keyboard": true },
                    "simple_modifications": [
                        {
                            "from": { "key_code": "caps_lock" },
                            "to": [{ "key_code": "left_control" }]
                        }
                    ]
                }
            ],
            "name": "Default profile",
            "selected": true,
            "virtual_hid_keyboard": { "keyboard_type_v2": "ansi" }
        }
    ]
}