It dawned on me (after untold years of
set -o vi on boxes belonging to other people),
that sudo must have some variable to indicate who the invoking user is;
it does. The variable is called
Starting right now, Ansible is dropping this template into
/etc/profile.d/jpm.sh on a lot of machines.
That marks the end of
sudo su - for me. From now on, it shall be
Life can be good.