[Chicken-users] Noob question: (re)compile FFI-accessing code within REPL

[Martin Percossi]

Hello, I apologize in advance if this question is silly. I'm playing 
around with chicken because a) it is scheme and b) it offers tight 
integration with existing libraries. In particular, I want to do play 
around with Window's sound and GUI APIs.

But right now I'm doing some testing on Linux, because I haven't quite 
figured out how to install MinGW and MSYS properly yet. In any case, 
here's a little test that uses the `dollar' FFI egg:

(use dollar)

(define (c-test)
 ($ printf "Hello Chicken, from C!"))

If I compile this using `csc -s test.scm', I get a shared library, which 
I can then load from `csi' using the command `(use test)'. I can then 
evaluate (c-test), as expected.

Now, supposing I wanted to change the c-test to:

(define (c-test)
 ($ printf "BOO!")

The question is: am I obliged to recompile outside of the REPL loop? In 
other words, is there a `compile' command which lets me recompile 
test.scm from within the REPL? This would allow me to do more 
incremental development -- and would make me less likely to separate FFI 
calling code from other code (whether or not that's a good idea is 
another question ;)

Couple of other questions, while I'm at it:
- Is quack generally preferred over hen in emacs? Quack looks pretty 
good; haven't tried hen yet. Keep in mind that I will be using windows 
eventually.
- When I download the readline egg, I get nice command completion on the 
csi REPL -- sweet! Unfortunately, it doesn't seem to work within emacs 
(quack), either in the REPL or when editing a scheme file. Is there any 
way to make this work?

Many thanks in advance,
Martin