Karabiner-Elements Complex Modifications

1507752111.json

{
  "title": "Change caps_lock key",
  "rules": [
    {
      "description": "Change caps_lock key to control. (Post escape key when pressed alone)",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "caps_lock",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_control"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "escape"
            }
          ]
        }
      ]
    },
    {
      "description": "Change caps_lock key to command+control+option+shift. (Post escape key when pressed alone)",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "caps_lock",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_shift",
              "modifiers": [
                "left_command",
                "left_control",
                "left_option"
              ]
            }
          ],
          "to_if_alone": [
            {
              "key_code": "escape"
            }
          ]
        }
      ]
    },
    {
      "description": "Change caps_lock key to command+control+option+shift. (Use shift+caps_lock as caps_lock)",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "caps_lock",
            "modifiers": {
              "mandatory": [
                "shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "caps_lock"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "caps_lock",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_shift",
              "modifiers": [
                "left_command",
                "left_control",
                "left_option"
              ]
            }
          ]
        }
      ]
    },
    {
      "description": "Change caps_lock to control if pressed with other keys, to escape if pressed alone.",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "caps_lock",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_control"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "escape"
            }
          ]
        }
      ]
    }
  ]
}

1507753034.json

{
  "title": "Change shift key",
  "rules": [
    {
      "description": "Change left_shift to caps_lock if pressed alone",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "left_shift",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_shift"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "caps_lock"
            }
          ]
        }
      ]
    },
    {
      "description": "Change right_shift to caps_lock if pressed alone",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "right_shift",
            "modifiers": {
              "optional": [
                "any"
              ]
            }
          },
          "to": [
            {
              "key_code": "right_shift"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "caps_lock"
            }
          ]
        }
      ]
    },
    {
      "description": "Toggle caps_lock by pressing left_shift + right_shift at the same time",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "left_shift",
            "modifiers": {
              "mandatory": [
                "right_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "caps_lock"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "left_shift"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "right_shift",
            "modifiers": {
              "mandatory": [
                "left_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "caps_lock"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "right_shift"
            }
          ]
        }
      ]
    },
    {
      "description": "Toggle caps_lock by pressing left_shift + right_shift at the same time and if pressed alone",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "left_shift",
            "modifiers": {
              "mandatory": [
                "right_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "left_shift"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "caps_lock"
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "right_shift",
            "modifiers": {
              "mandatory": [
                "left_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "right_shift"
            }
          ],
          "to_if_alone": [
            {
              "key_code": "caps_lock"
            }
          ]
        }
      ]
    }
  ]
}

README.md

These are some of my custom complex modifications for Karabiner-Elements.

1. Place these files in ~/.config/karabiner/assets/complex_modifications
2. Add the preferred rules under the Complex Modifications tab in Karabiner-Elements Preference

My preference is to use the following rules:

• "Change caps_lock to control if pressed with other keys, to escape if pressed alone."
• "Toggle caps_lock by pressing left_shift + right_shift at the same time"