How to get same shell completion as Arch Linux ISO

Question

I noticed this when booting the arch linux ISO:

1. e.g. type shift at prompt
2. then press tab
3. auto-completion list pops-up below (inside red rectangle in screenshot)
4. press tab tab
5. use arrow keys to navigate

I installed arch linux a few years ago, I run updates regularly, I installed bash-completion, but I have not got this feature.

What's the name or how do I get this feature or how do I set it up correctly?

Answer 1

The Arch ISO uses Zsh and the grml config. This is documented on the wiki:

To get the same setup as the monthly ISO releases (which use Zsh by default), install grml-zsh-config. It includes the many tweaks and advanced optimizations from grml.