Re: on helm substantial differences - Re: [PATCH] Support "\n" in icomplete-separator

[Eli Zaretskii]

> Date: Thu, 12 Nov 2020 12:13:23 +0300
> From: Jean Louis <bugs@gnu.support>
> Cc: Eli Zaretskii <eliz@gnu.org>, rudalics@gmx.at, spacibba@aol.com,
>   monnier@iro.umontreal.ca, andreyk.mad@gmail.com, emacs-devel@gnu.org
> 
> Emacs completion is based on the minibuffer. Helm completion is based
> on the completion window.

No, the default Emacs completion is also based on a separate window
showing the completion candidates in a special buffer *Completions*,
when there are more than one.  It is optional features like icomplete
and ivy that use the minibuffer for showing the completion candidates.