@ska I'm at that point, too.
http://jdebp.info/Softwares/nosh/guide/virtual-terminal-login.html
The last step was sh -c 'exec -a -"${SHELL}" "${SHELL}"' which was excessive. I remembered that someone had done a loginshell tool, and didn't want to be gratuitously incompatible, but I remembered the wrong someone. (-:
I need one more tool, which M. Jarc also did something similar to.