Capslock to Escape+Ctrl Remap

.dual-function-keys.yaml

# ~/.dual-function-keys.yaml
TIMING:
  TAP_MILLISEC: 200
  DOUBLE_TAP_MILLISEC: 150

MAPPINGS:
  - KEY: KEY_CAPSLOCK
    TAP: KEY_ESC
    HOLD: KEY_LEFTCTRL
  - KEY: KEY_ESC
    TAP: KEY_CAPSLOCK
    HOLD: KEY_CAPSLOCK

readme.md

Based on the tutorial off https://emacsredux.com/blog/2020/07/05/remap-enter-to-control-in-gnu-linux-2020-edition/

udevmon.service

# /etc/systemd/system/udevmon.service

[Unit]
Description=udevmon
Wants=systemd-udev-settle.service
After=systemd-udev-settle.service

[Service]
ExecStart=/usr/bin/nice -n -20 /usr/bin/udevmon -c /etc/udevmon.yaml

[Install]
WantedBy=multi-user.target

udevmon.yaml

# /etc/udevmon.yaml
- JOB: "intercept -g $DEVNODE | dual-function-keys -c ~/.dual-function-keys.yaml | uinput -d $DEVNODE"
  DEVICE:
    EVENTS:
      EV_KEY: [KEY_ESC, KEY_CAPSLOCK]