Love2d project-runner windows

--[[Works on windows,
    Running using cmd:
        start /d "path\to\lua5X\folder" lua5X.exe path\to\love2d\folder ./
    Running using notepad++:
    Insert into shortcuts.xml (Key "112" = alt, running as alt + f1):
      <Command name="Run as LOVE2d" Ctrl="no" Alt="yes" Shift="no" Key="112">
         path\to\lua5X.exe path\to\thisScript.lua path\to\LOVE2d\folder $(CURRENT_DIRECTORY)
      </Command>
    example:
    <Command...>C:\lua5.3\lua53.exe C:\script\runner.lua C:\LOVE\LOVE_0.10 $(CURRENT_DIRECTORY)</Command>
    ]]

function fileExists(path)
    local success, f = pcall(io.open, path,"r")
    return f and io.close(f) and true
end
-- Checking interpreter
interprepath = arg[1] or os.exit()
-- Init path
projpath = arg[2] and arg[2]:gsub('\\', '/') or os.exit()
projpath = projpath:sub(-1) == '/' and projpath:sub(1, -2) or projpath
-- Run debug when any additional flags
dbg = arg[3] and true or false

-- Finding folder with 'main.lua'-file
while projpath:find('/') do
    if fileExists(projpath..'/main.lua') then
        os.execute('start /d "'..interprepath..'" love.exe '..projpath)
        break
    end
    -- Up to the Folder Tree!
    projpath = projpath:match('(.*)%/')
end

if dbg then
    for k, v in pairs(arg) do
        print(k..':  '..v)
    end
end
os.exit()