[Maxima] Tellsimp and stack overflow.

[Grigory Sarnitskiy]

>  It's not clear to me what you're trying to do. Maybe if you state the
>  rules informally (not as Maxima declarations) I can help you formulate
>  the appropriate tellsimpafter incantation.

Imagine I need a function f, such that

f(a*b) = f(g(a) * g(b))

I don't want maxima to evaluate it ad infinitum, only n steps

so if

n = 1 then f(a*b) = f(g(a) * g(b))
n = 2 then f(a*b) = f(g(g(a)) * g(g(b)))
n = 3 then f(a*b) = f(g(g(g(a))) * g(g(g(b))))
..