keymapper.conf

# define some aliases
Alt     = AltLeft
AltGr   = AltRight
Win     = Meta
Command = Meta

# immediately forward common modifier keys (also used as mouse modifiers)
@forward-modifiers Shift Control Alt

# define a virtual "boss" key, which can be toggled using the scroll-lock key
# when the boss key is "pressed", the keyboard should be intuitively useable
Boss = Virtual1
ScrollLock >> Boss
Boss{Any} >> Any

# map Capslock to Backspace
Control{CapsLock} >> CapsLock
CapsLock          >> Backspace

# define an additional modifier "Ext" (angular bracket key on some keyboards)
Ext = IntlBackslash

# the Ext modifier alone should have no effect
Ext >>

# map Ext-S/D/F to Alt/Shift/Control
Ext{S}               >> Alt
Ext{D}               >> Shift
Ext{F}               >> Control
Ext{A}               >> Alt   # also map A because of S/D rollover

# Ext-W and the navigation keys should step in/out/over during debugging
Ext{W{L}}            >> debug_step_into
Ext{W{J}}            >> debug_step_out
Ext{W{K}}            >> debug_step_over
Ext{W{Any}}          >>

# map Ext-I/J/K/L to cursor keys...
Ext{I}               >> ArrowUp
Ext{K}               >> ArrowDown
Ext{J}               >> ArrowLeft
Ext{L}               >> ArrowRight
Ext{U}               >> cursor_home
Ext{O}               >> cursor_end
Ext{Y}               >> PageUp
Ext{H}               >> PageDown

Ext{Semicolon}       >> Backspace
Ext{Q}               >> navigate_escape
Ext{Space}           >> Space
Ext{M}               >> Enter

Ext{X}               >> edit_cut
Ext{C}               >> edit_copy
Ext{V}               >> edit_paste
Ext{E}               >> find
Ext{Z}               >> edit_undo
(Ext Shift){Z}       >> edit_redo

Ext{Comma}           >> navigate_back
Ext{Period}          >> navigate_fore
Ext{T}               >> open_file
Ext{G}               >> go_to_definition
Ext{BracketRight}    >> AudioVolumeUp
Ext{BracketLeft}     >> AudioVolumeDown
Ext{R}               >> Delete
Ext{B}               >> build

# map Ext-number keys to function keys
Ext{1}               >> F1
Ext{2}               >> edit_rename
Ext{3}               >> F3
Ext{4}               >> F4
Ext{5}               >> F5
Ext{6}               >> F6
Ext{7}               >> F7
Ext{8}               >> F8
Ext{9}               >> F9
Ext{0}               >> F10
Ext{Minus}           >> F11
Ext{Equal}           >> F12

# the Ext modifier together with other keys should have no effect
Ext{Any}             >>

# add some Windows-key commands
Win{C}               >> open_terminal
Win{Q}               >> close_window
Win{A}               >> lower_window
Win{Tab}             >> next_tab
(Win Shift){Tab}     >> prev_tab
(Win Control Alt){S} >> suspend_machine
(Win Control Alt){P} >> poweroff_machine
(Win Control Alt){R} >> reboot_machine

# pass other Windows key combinations unmapped
Win{Any}             >> Win{Any}

# colemak layout mapping
(Shift AltGr){I}         >> 'Ü'
AltGr{I}                 >> 'ü'
(Shift AltGr){A}         >> 'Ä'
AltGr{A}                 >> 'ä'
(Shift AltGr){Semicolon} >> 'Ö'
AltGr{Semicolon}         >> 'ö'
AltGr{D}                 >> 'ß'
AltGr{Q}                 >> '@'
AltGr{Backquote}         >> '°'

E                        >> F
R                        >> P
T                        >> G
Y                        >> J
U                        >> L
I                        >> U
O                        >> Z
Z                        >> Y
Shift{P}                 >> ':'
P                        >> ';'
S                        >> R
D                        >> S
F                        >> T
G                        >> D
J                        >> N
K                        >> E
L                        >> I
Semicolon                >> O
N                        >> K

Shift{Quote}             >> '"'
Quote                    >> "'"
Shift{Comma}             >> '<'
Shift{Period}            >> '>'
Shift{BracketLeft}       >> '{'
BracketLeft              >> '['
Shift{BracketRight}      >> '}'
BracketRight             >> ']'
Shift{Backquote}         >> Shift{Equal} Space  # dead key '`'
Backquote                >> '~'
Shift{2}                 >> '@'
Shift{3}                 >> '#'
Shift{6}                 >> Backquote Space   # dead key '^'
Shift{7}                 >> '&'
Shift{8}                 >> '*'
Shift{9}                 >> '('
Shift{0}                 >> ')'
Shift{Minus}             >> '_'
Minus                    >> '-'
Shift{Equal}             >> '+'
Equal                    >> '='
Shift{Backslash}         >> '|'
Backslash                >> '\'
Shift{Slash}             >> '?'
Slash                    >> '/'

# default mappings for abstract commands
open_terminal        >> Any
suspend_machine      >> Any
poweroff_machine     >> Any
reboot_machine       >> Any
close_window         >> Alt{F4}
navigate_escape      >> Escape
cursor_home          >> Home
cursor_end           >> End
open_file            >> Control{O}
navigate_back        >> Alt{ArrowLeft}
navigate_fore        >> Alt{ArrowRight}
next_tab             >> Control{PageUp}
prev_tab             >> Control{PageDown}
edit_copy            >> Control{C}
edit_cut             >> Control{X}
edit_paste           >> Control{V}
edit_undo            >> Control{Y}
edit_redo            >> Control{Z}
find                 >> Control{F}
build                >> Control{B}
debug_step_over      >> F10
debug_step_into      >> F11
debug_step_out       >> Shift{F11}
edit_rename          >> F2

# system/application specific mappings for abstract commands
[system="MacOS"]
  @macos-toggle-fn
  @macos-iso-keyboard
  
  close_window         >> Command{Q}
  cursor_home          >> Command{ArrowLeft}
  cursor_end           >> Command{ArrowRight}
  edit_cut             >> Command{X}
  edit_copy            >> Command{C}
  edit_paste           >> Command{V}
  edit_undo            >> Command{Y}
  edit_redo            >> (Command Shift){Y}
  find                 >> Command{F}

[system="Linux"]
  lower_window         >> (Alt Shift){PageDown}

[system = "Linux", class = "Thunar", title != "Rename"]
  cursor_home          >> Backspace
  cursor_end           >> Enter
  open_terminal        >> (Shift Control){C}

[system="Linux" class="tilix"]
  close_window         >> (Shift Control){W}
  edit_paste           >> (Shift Control){V}
  open_terminal        >> ContextMenu ^ Enter

[system="Windows"]
  suspend_machine      >> Win{X} 300ms U S
  poweroff_machine     >> Win{X} 300ms U U
  reboot_machine       >> Win{X} 300ms U R
  lower_window         >> Alt{Escape}
  open_terminal        >> $(start cmd)

[system="Windows" class="CabinetWClass"] # Windows Explorer
  open_terminal        >> F4 ^ Control{A} "cmd" Enter

[title="Mozilla Firefox"]
  open_file            >> Control{K}
  navigate_escape      >> Escape Control{F} Escape
  go_to_definition     >> Shift{Backslash}

[title="Chromium"]
  open_file            >> Control{L}
  navigate_escape      >> Control{L} F6

[title="Qt Creator"]
  open_file            >> Control{K}
  go_to_definition     >> F2
  edit_redo            >> (Control Shift){Y}
  edit_rename          >> (Control Shift){R}

[title=/Code - OSS|Visual Studio Code/]
  go_to_definition     >> F12
  navigate_back        >> (Control Alt){Slash}
  navigate_fore        >> (Control Shift){Slash}
  build                >> (Control Shift){B}

[system="MacOS" class="Code"]
  go_to_definition     >> F12
  navigate_back        >> (Control){Slash}
  navigate_fore        >> (Control Shift){Slash}
  build                >> (Control Shift){B}

[title="Visual Studio"]
  go_to_definition     >> F12
  navigate_back        >> Control{Slash}
  navigate_fore        >> (Control Shift){Slash}
  build                >> (Control Shift){B}

[title="Geany"]
  go_to_definition     >> (Control Shift){T}

[stage]
  ? "std:;" >> ":"