Simple AutoHotKey v2 Extend Layer

extend-layer.ahk

; Extend Layer
; Based on https://dreymar.colemak.org/layers-extend.html
; Note: I experimented with a lot of different implementations for caps lock as
; an extend key using `GetKeyState("CapsLock", "P")`. All of them broke when
; typing really fast. In the end this reddit post (https://www.reddit.com/r/AutoHotkey/comments/1fox8q1/typing_too_fast_breaks_my_script/)
; solved it by not relying on `GetKeyState` but instead using direct key 
; combinations.

#Requires AutoHotkey v2+
#SingleInstance Force
SendMode('Event')

SetCapsLockState("AlwaysOff")

; Modifiers
CapsLock & a::Alt
CapsLock & d::Shift
CapsLock & f::Ctrl

; Commands
CapsLock & f::Ctrl
CapsLock & z::^z
CapsLock & x::^x
CapsLock & c::^c
CapsLock & v::^v

; Arrows
CapsLock & i::Up
CapsLock & k::Down
CapsLock & j::Left
CapsLock & l::Right

; Navigation
CapsLock & w::WheelUp
CapsLock & s::WheelDown
CapsLock & u::Home
CapsLock & o::End
CapsLock & y::PgUp
CapsLock & h::PgDn

; Misc
CapsLock & q::Esc
CapsLock & `;::BackSpace
CapsLock & '::AppsKey
CapsLock & Space::^Space