karabiner-elements.json

{
    "title": "nekoya",
    "rules": [
        {
            "description": "backslash",
            "manipulators": [
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "international3"},
                    "to": [{"key_code": "international3", "modifiers": "option"}],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "HHKB kana toggle",
            "manipulators": [
                {
                    "conditions": [{"input_sources": [{"language": "en"}],"type": "input_source_if"}],
                    "from": {"key_code": "international4"},
                    "to": [{"key_code": "japanese_kana"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "ja"}],"type": "input_source_if"}],
                    "from": {"key_code": "international4"},
                    "to": [{"key_code": "japanese_eisuu"}],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "HHKB eisuu plus esc",
            "manipulators": [
                {
                    "from": {"key_code": "international5"},
                    "to": [
                        {"key_code": "japanese_eisuu"},
                        {"key_code": "escape"}
                    ],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "HHKB right-alt to command",
            "manipulators": [
                {
                    "from": {"key_code": "international2"},
                    "to": [{"key_code": "left_gui"}],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "HHKB quote",
            "manipulators": [
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "non_us_pound"},
                    "to": [{"key_code": "7", "modifiers": "shift"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "non_us_pound", "modifiers": {"optional": ["shift"]}},
                    "to": [{"key_code": "2", "modifiers": "shift"}],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "kana toggle",
            "manipulators": [
                {
                    "conditions": [{"input_sources": [{"language": "ja"}],"type": "input_source_if"}],
                    "from": {"key_code": "japanese_kana"},
                    "to": [{"key_code": "japanese_eisuu"}],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "eisuu plus esc",
            "manipulators": [
                {
                    "from": {"key_code": "japanese_eisuu"},
                    "to": [
                        {"key_code": "japanese_eisuu"},
                        {"key_code": "escape"}
                    ],
                    "type": "basic"
                }
            ]
        },
        {
            "description": "ascii like chars only IME-disabled",
            "manipulators": [
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "2", "modifiers": {"mandatory": ["shift"]}},
                    "to": [{"key_code": "open_bracket"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "open_bracket", "modifiers": {"optional": ["shift"]}},
                    "to": [{"key_code": "close_bracket"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "close_bracket", "modifiers": {"optional": ["shift"]}},
                    "to": [{"key_code": "backslash"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "backslash"},
                    "to": [{"key_code": "7", "modifiers": "shift"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "backslash", "modifiers": {"mandatory": ["shift"]}},
                    "to": [{"key_code": "2", "modifiers": "shift"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "7", "modifiers": {"mandatory": ["shift"]}},
                    "to": [{"key_code": "equal_sign"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "hyphen", "modifiers": {"mandatory": ["shift"]}},
                    "to": [{"key_code": "international1"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "international1"},
                    "to": [{"key_code": "open_bracket", "modifiers": "shift"}],
                    "type": "basic"
                },
                {
                    "conditions": [{"input_sources": [{"language": "en"}], "type": "input_source_if"}],
                    "from": {"key_code": "equal_sign"},
                    "to": [{"key_code": "hyphen", "modifiers": "shift"}],
                    "type": "basic"
                }
            ]
        }
    ]
}

~/.config/karabiner/assets/complex_modifications/karabiner.json