udevmon-capslock-navigation

Interception plugin for mapping capslock to navigation keys near the home row:

• j -> left
• k -> down
• i -> up
• l -> right
• h -> home
• ; -> end
• backspace -> delete
• capslock up+down is translated to esc up+down, unless other keys are pressed while capslock is down

What is it?

Yet another plugin for interception tools to recreate some functionality of a MacOS karabiner setup. The purpose is to recapture the useless caps-lock key for something useful. In this case it's the ESC key and arrow navigation.

Built on top of these two existing plugins

• https://github.com/kbairak/s2arrows
• https://gitlab.com/interception/linux/plugins/caps2esc

Dependencies

• Interception Tools

Building

git clone [email protected]:unkhz/udevmon-capslock-navigation
cd udevmon-capslock-navigation
mkdir build
cd build
cmake ..
make
sudo make install

Enabling

udevmon

udevmon-capslock-navigation is an Interception Tools plugin. A suggested udevmon job configuration (/etc/udevmon.yaml) is:

- JOB: "intercept -g $DEVNODE | udevmon-capslock-navigation | uinput -d $DEVNODE"
  DEVICE:
    EVENTS:
      EV_KEY: [KEY_CAPSLOCK, KEY_ESC, KEY_BACKSPACE, KEY_DELETE, 
               KEY_H, KEY_I, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON,
               KEY_HOME, KEY_LEFT, KEY_DOWN, KEY_UP, KEY_RIGHT,
               KEY_END]

systemd

A suggested systemd service to run udevmon can be setup by creating the following file (/etc/systemd/udevmon.service):

[Unit]
Description=udevmon
After=systemd-user-sessions.service

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

[Install]
WantedBy=multi-user.target

Then, you can enable and start the service like any other:

sudo systemctl enable --now udevmon.service

License