Hi:

Could you please try the attached patch (where the mode is enabled by default).

On Sun, Aug 23, 2020 at 09:45:17PM +0300, Juri Linkov wrote:
>
>Easier can be only one thing: to use arrows and navigation keys to navigate
>completions from the minibuffer.  So the main question is on what condition
>to activate these keys (instead of allowing them to search in history)?
>
I enabled the keys only when the *Completions* buffer is shown and the
highlight completions is active. And added a hook to remove the bindings
when minibuffer-hide-completions.

>Since making TAB more DWIM doesn't work, what about the following solution:
>activate completions navigation keys and display the completions buffer
>only when there is some input in the minibuffer, i.e. when the minibuffer's
>content is different from its default value.
>
Please try this closer to zsh experience implementation.

>Or similar to this https://api.jqueryui.com/autocomplete/#option-minLength
>activate completions only when input is longer than the minimum number
>of characters.
>

I will give a look.

If this patch is too much code for adding in simple and minibuffer, I
would try to make a separate file with a mode. WDYT?

Best,
Ergus