#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.

!u::Return          ; umlaut
!s::SendInput % "ß"

*u::umlaut("u","ü","Ü")
*a::umlaut("a","ä","Ä")
*o::umlaut("o","ö","Ö")

umlaut(regular,umlautOption,umlautShiftOption) {
  if (A_PriorHotKey = "!u" && A_TimeSincePriorHotkey < 2000) {
    if (GetKeyState("Shift")) {
      SendInput % umlautShiftOption
    } else {
      SendInput % umlautOption
    }
  } else {
    if (GetKeyState("Shift") or GetKeyState("Capslock","T")) {
      SendInput % "+" regular
    } else {
      SendInput % regular
    }
  }
}

^u::Send ^u
^!u::Send ^!u
^#u::Send ^#u
^+u::Send ^+u

!#u::Send !#u
!+u::Send !+u

#u::Send #u
#+u::Send #+u


^a::Send ^a
^!a::Send ^!a
^#a::Send ^#a
^+a::Send ^+a

!a::Send !a
!#a::Send !#a
!+a::Send !+a

#a::Send #a
#+a::Send #+a


^o::Send ^o
^!o::Send ^!o
^#o::Send ^#o
^+o::Send ^+o

!o::Send !o
!#o::Send !#o
!+o::Send !+o

#o::Send #o
#+o::Send #+o