My Karabiner settings to make Caps Lock useful on a German keyboard (drop into .config/karabiner/assets/complex_modifications/)

caps_lock_programming.json

{
  "title": "My Karabiner settings to make Caps Lock useful on a German keyboard",
  "rules": [{
    "description": "Map Caps Lock to {, and Shift-Caps Lock to }",
    "manipulators": [{
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": {} },
      "to": [{ "key_code": "8", "modifiers": ["left_option"] }]
    },
    {
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": { "mandatory": ["left_shift"] } },
      "to": [{ "key_code": "9", "modifiers": ["left_option"] }]
    },
    {
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": { "mandatory": ["right_shift"] } },
      "to": [{ "key_code": "9", "modifiers": ["left_option"] }]
    }]
  },
  {
    "description": "Map Option-Caps Lock to [, and Shift-Option-Caps Lock to ]",
    "manipulators": [{
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": { "mandatory": ["left_option"] } },
      "to": [{ "key_code": "5", "modifiers": ["left_option"] }]
    },
    {
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": { "mandatory": ["right_option"] } },
      "to": [{ "key_code": "5", "modifiers": ["left_option"] }]
    },
    {
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": { "mandatory": ["left_shift", "left_option"] } },
      "to": [{ "key_code": "6", "modifiers": ["left_option"] }]
    },
    {
      "type": "basic",
      "from": { "key_code": "caps_lock", "modifiers": { "mandatory": ["right_shift", "right_option"] } },
      "to": [{ "key_code": "6", "modifiers": ["left_option"] }]
    }]
  },
  {
    "description": "Allow locking the screen with Ctrl-Shift-Backspace (instead of Eject)",
    "manipulators": [{
      "type": "basic",
      "from": { "key_code": "delete_or_backspace", "modifiers": { "mandatory": ["left_control", "left_shift"] } },
      "to": [{ "key_code": "eject", "modifiers": ["left_control", "left_shift"] } ]
    }]
  }]
}