bug#55800: using rgrep function interactively with fido-mode or fido-vertical-mode causes errors

[Eli Zaretskii]

> From: Yilkal Argaw <yilkalargawworkneh@gmail.com>
> Date: Sun, 5 Jun 2022 04:11:02 +0300
> 
> using rgrep along with fido-mode or fido-vertical-mode causes the
> following error.

Could you please show a complete recipe, starting with "emacs -Q" and
listing all the commands needed to reproduce this problem?  That is,
start with "emacs -Q", then invoke the command to use
fido-vertical-mode, then the command to use rgrep with all of its
argument, and anything else that is needed for the error to appear.

Thanks.