Temporary changing the behavior of a function

[Marcin Borkowski]

Hi list,

so there is this function `foo', which calls the function `bar'.  The
function `bar' is responsible for asking the user for some value and
passing that value to the guts of `foo'.

Now I want to call `foo' in the Mafia-mode;-), i.e., it should ask no
further questions.  What do I do?  AFAIU, `cl-flet' won't help, since it
is lexical.  The best I can think of is to temporarily advice `bar' with
:override - but then, instead of a `let'-like, local construct, I have
to explicitly add and then remove the advice, right?

Any other ideas?

TIA,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University