Hello maintainers,

Emacs Lisp Package Archive (ELPA) now includes a package called 'corfu',
according to its documentation:

        Corfu enhances the default completion in region function with a
        completion overlay. The current candidates are shown in a popup
        below or above the point.  Corfu is the minimalistic
        ~completion-in-region~ counterpart of the
        [[https://github.com/minad/vertico][Vertico]] minibuffer UI.

Hence, this patch tries to add support for `completion-in-region' in
`notmuch-address-expand-name'.  By default, this behaviour is turned off
so that existing users can enjoy existing completion techniques.

Thank you,
Utkarsh Singh
-- 
Utkarsh Singh
https://utkarshsingh.xyz/