>   In icomplete--render-vertical:
>   icomplete.el:1015:11: Warning: Unused lexical variable `comp'
>   icomplete.el:1019:10: Warning: Unused lexical variable `comp'
>
> Can you fix this, please?

Fixed.

> These entries should be under "Changes in Specialized Modes and
> Packages in Emacs 31.1", in a new sub-section "Icomplete".
>

Moved to the right section.

> We use the US English spelling: "behavior".

Oops, fixed.

--

Please find attached the newest version of this patch.