keyd.conf

# NOTE: to use this, rename this file to default.conf and put in /etc/keyd/

# Mac-Like Configuration Example
#
# Uses "Alt" button to the left of spacebar as "Cmd" key
#
# Note:
#   This 'trick' generally requires that the press+release of the Meta
#   key will do nothing. On my system, I had to disable the "overlay-key"
#   in mutter to make it inert:
#     - `gsettings set org.gnome.mutter overlay-key ''`

[ids]
046d:c548 #Logitech USB Receiver Mouse (/dev/input/event21)
0001:0001 #AT Translated Set 2 keyboard (/dev/input/event0)
#*

[main]

# Create a new "Cmd" button, with various Mac OS-like features below
leftalt = layer(meta_mac)

# Swap meta/alt
leftmeta = layer(alt_mac)

# Use 'capslock' as both esc + control (just like xcape)
capslock = overload(ctrl_vim, esc)

# Also add a little vim-like navigational ease when holding caps+hjkl
[ctrl_vim:C]
h = C-pageup
j = pagedown
k = pageup
l = C-pagedown

[alt_mac:A]

# meta_mac modifier layer; inherits from 'Ctrl' modifier layer
#
# The main part! Using this layer, we can remap our new "Cmd" key to
# do almost everything our muscle memory might need...
[meta_mac:C]

# Meta-Space: Open the Launcher (a feature of gnome-shell)
# keybinding: ? how did we arrive at M-/ ?
space = M-/

# Switch directly to an open tab (e.g. Firefox, VS code)
1 = A-1
2 = A-2
3 = A-3
4 = A-4
5 = A-5
6 = A-6
7 = A-7
8 = A-8
9 = A-9

# Copy
c = C-insert
# Paste
v = S-insert
# Cut
x = S-delete

# Move cursor to beginning of line
left = home
# Move cursor to end of Line
right = end

# As soon as tab is pressed (but not yet released), we switch to the
# "app_switch_state" overlay where we can handle Meta-Backtick differently.
# Also, send a 'M-tab' key tap before entering app_switch_sate.
tab = swapm(app_switch_state, M-tab)

# Meta-Backtick: Switch to next window in the application group
# - A-f6 is the default binding for 'cycle-group' in gnome
# - keybinding: `gsettings get org.gnome.desktop.wm.keybindings cycle-group`
` = A-f6


# app_switch_state modifier layer; inherits from 'Meta' modifier layer
[app_switch_state:M]

# Meta-Tab: Switch to next application
# - keybinding: `gsettings get org.gnome.desktop.wm.keybindings switch-applications`
tab = M-tab
right = M-tab

# Meta-Backtick: Switch to previous application
# - keybinding: `gsettings get org.gnome.desktop.wm.keybindings switch-applications-backward`
` = M-S-tab
left = M-S-tab