How do I stop an active AutoHotkey script?

Question

Yesterday while debugging my AutoHotkey script, I accidentally triggered an endless loop of MouseMove and MouseClick events. Every 0.5 seconds my mouse

Answer 1

You could also make your script #SingleInstance force and watch for a "-quit" argument or something.

#SingleInstance force
#Persistent

If A_Args[1] == "--stop"
    ExitApp

; just some random stuff for the script to do
count := 0
Loop,
{
    count++
    Tooltip, %count%
    Sleep, 200
}

So you run the same script again but with the argument. And BAM its gone.

Just for completeness. @Stevoisiak's answer is already great for the purpose requested.