Command_to_kana_eisuu.lua

local prevKeyCode
local leftCommand = 0x37
local rightCommand = 0x36
local eisuu = 0x66
local kana = 0x68
local alert_eikana

local function keyStroke(modifiers, character)
  hs.eventtap.keyStroke(modifiers, character, 1000)
end

local function handleEvent(e)
  local keyCode = e:getKeyCode()
  local isCmdKeyUp = not(e:getFlags()['cmd']) and e:getType() == hs.eventtap.event.types.flagsChanged
  if isCmdKeyUp and prevKeyCode == leftCommand then
    keyStroke({}, eisuu)
    hs.alert.closeSpecific(alert_eikana)
    alert_eikana = hs.alert.show("ABC", 0.3)
  elseif isCmdKeyUp and prevKeyCode == rightCommand then
    keyStroke({}, kana)
    hs.alert.closeSpecific(alert_eikana)
    alert_eikana = hs.alert.show("Hiragana", {fillColor = {blue = 1, alpha = 0.75}}, 0.3)
  end
  prevKeyCode = keyCode
end

eventtap = hs.eventtap.new({hs.eventtap.event.types.flagsChanged, hs.eventtap.event.types.keyDown, hs.eventtap.event.types.keyUp}, handleEvent)
eventtap:start()