RE: antlr-mode.el - need some support by python.el

[Wedler, Christoph]

> The only difference is that the submode doesn't provide "get-state" to
> the outer mode, instead the outer mode provides the
> "previous-chunk-descriptor" and the submode calls "get-state" on it if
> it wants to.

OK, that is fine with me.  And this PREVIOUS-CHUNK-DESCRIPTOR could then
be even a part of `indent-multi-mode-context' (or whatever the name is).

(I was too much on "adopting forward-sexpr" vs "use temporary buffer",
but both implementations are also possible with your API).

        Christoph