hm, I am currently stuck with this thing\:
https://play.nim-lang.org/#pasty=XjhEKafP
I thought this should be very simple\:
zip two string sequences as far as the longest sequence, while repeating the
shorter sequence if needed.
but the compiler tells me, it expected a different syntax for the func return
type L7. is `seq[tuple[T, T]]` not how I would type it?