在按下ESC时，ESC生效的同时将输入法切换为英文，可以应用在vim退出编辑模式时

karabiner_esc_to_en.json

{
    "description": "ESC: ESC and language to en",
    "manipulators": [
        {
            "type": "basic",
            "conditions": [
                {
                    "type": "input_source_unless",
                    "input_sources": [
                        {
                            "input_source_id": "^com\\.apple\\.keylayout\\.ABC$",
                            "language": "^en$"
                        }
                    ]
                }
            ],
            "from": {
                "key_code": "escape"
            },
            "to": [
                {
                    "key_code": "escape"
                },
                {
                    "select_input_source": {
                        "input_source_id": "^com\\.apple\\.keylayout\\.ABC$",
                        "language": "^en$"
                    }
                }
            ]
        }
    ]
}