known issue <https://github.com/nim-lang/Nim/issues/13804>
- Tuple unpacking and '_' - not being discarded? ElAfalw
- Tuple unpacking and '_' - not being discarded? jrfondren
- Tuple unpacking and '_' - not being discarded? ElAfalw
- Tuple unpacking and '_' - not being discarded? jrfondren
- Tuple unpacking and '_' - not being discarded? SolitudeSF
