Ihor Radchenko <yantar92@posteo.net> writes:

> Again, we know this problem, and we normally force the prompt to be
> something more unique when creating sessions. But we do not touch the
> prompt when you point Org to an existing interactive shell buffer - that
> could be a surprise if Org mode changes the prompts by force in the
> shells you use interactively.

... on the other hand, Org mode simply hanging or emitting garbage is
also not great. So, maybe changing the prompt by force is good?

I am attaching tentative series of patches that will do exactly this -
setup prompt even in the existing shell buffers. I also changed the
babel prompt to be (1) shorter; (2) more "Babel"y.