Ah, that's true, I couldn't recall which version fixed it. Usually I assume v4 because any other distro automatically updates to the latest v4 version or latest

Ah, that's true, I couldn't recall which version fixed it. Usually I assume v4 because any other distro automatically updates to the latest v4 version or latest version af all. macOS is the only one out there missing on this. The other big feature that was only added after bash 3 and is missing on mac is associative arrays