bug#49761: file-cache-minibuffer-complete has become unusable for duplicate file names in MacOSX 27.x emacs

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: Eli Zaretskii <eliz@gnu.org>,  49761@debbugs.gnu.org
> Date: Fri, 30 Jul 2021 01:49:18 +0300
> 
> 4. 'make C-TAB' then the completions buffer is displayed and the cursor
>    jumps to the beginning because there are completions that don't begin
>    with the same prefix "make" such as flymake.el, pmake.el, ob-makefile.el.

Is this reasonable behavior?  It seems to try second-guessing what the
user will do next, but that guess is not necessarily correct.