So compared to plain bash without autocomplete and Ctrl+R it may be useful. It is probably a step back for everyone else.

I think it could be much worse than even a plain shell with ^R, as the llm will be slower than the normal history search and probably has less context than the $HISTFILE.

One alternative are monadic types like result or maybe, that can contain either a value or an error/no value.

Having the commands listed at the bottom by default is one thing i personally dislike about nano, because they take up space while being useless to someone knowing the commands (or at least knowing how to open the help in, which is what you can do in vim to achieve the cheat sheet). The alternative that vim uses, is to show the commands when starting the editor without opening a file.

(when-not (> a b) (> b a))