Autohotkey script to turn CapsLock in a new independent meta key for special characters. Assumes a Colemak layout underneath.

colemak_specialchars.ahk

#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
; #Warn  ; Enable warnings to assist with detecting common errors.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

SetCapsLockState AlwaysOff

; left hand , top row
CapsLock & q::
	Send £
return
CapsLock & w::
	Send &
return
CapsLock & f::
	Send *
return
CapsLock & p::
	Send ~
return
CapsLock & g::
	Send `:
return

; left hand, home row
CapsLock & a::
	Send {RAlt}``
return
CapsLock & r::
	Send {#}
return
CapsLock & s::
	Send @
return
CapsLock & t::
	Send $
return
CapsLock & d::
	Send `%
return
; left hand, bottom row
CapsLock & c::
	Send {^}
return
CapsLock & v::
	Send ``
return

; right hand, top row
CapsLock & j::
	Send `-
return
CapsLock & l::
	Send )
return
CapsLock & u::
	Send ]
return
CapsLock & y::
	Send {}}
return
CapsLock & `;::
	Send >
return

; right hand, home row
CapsLock & h::
	Send _
return
CapsLock & n::
	Send (
return
CapsLock & e::
	Send [
return
CapsLock & i::
	Send {{}
return
CapsLock & o::
	Send <
return

; right hand, bottom row
CapsLock & k::
	Send {=}
return
CapsLock & m::
	Send {+}
return
CapsLock & ,::
	Send `\
return
CapsLock & .::
	Send `|
return
CapsLock & /::
	Send {!}
return

; NUMPAD
; right hand, top row
#if GetKeyState("CapsLock", "P")
Shift & l::
	Send 1
return
Shift & U::
	Send 2
return
Shift & Y::
	Send 3
return
; right hand, home row
Shift & N::
	Send 4
return
Shift & E::
	Send 5
return
Shift & I::
	Send 6
return
; right hand, bottom row
Shift & M::
	Send 7
return
Shift & <::
	Send 8
return
Shift & >::
	Send 9
return
Shift & ?::
	Send 0
return