val popFunction = (n: Int) =>
if args.nonEmpty then
val res = (argIndex until argIndex + n).map(args(_ % args.length))
argIndex += n
res
else ctx.pop(n)
e.g. "Sorry, user, you must have messed up when you typed 'foo bar' because that's an invalid command. You're an idiot and don't deserve to live. Bye."