JESS: Strange behaviour of defadvice

  Hi everybody,

I have a problem with defadvice's behavior. It looks like you can't add 
both a "before" and an "after" advice to the same function.
Here is an example that demonstrates it

(deffunction f ()
     (printout t "during f" crlf))

(defadvice before f (printout t "before f" crlf))
(defadvice after f (printout t "after f" crlf))

(f)


It prints:
Jess> (batch "test.clp")
during f
after f
Jess>

Looks like the after overwrote the before one and there is no way to 
define both at the same time...
I'm new to Jess so I hope this question is not stupid but i looked in 
documentation and in the old mailling-list messages and found no 
explaination for it. Is it the intended behaviour (in which case it 
would be good to precise it in the doc) or a bug? I'm using the last 
Jess71p2.

I needed this to unbind global variables before a bsave and rebind after 
the bsave (this variable refers to a java Logger which is not 
serializable). I've found another solution wihtout using defadvice but I 
find the defadvice more elegant.


Best regards

-- 
***********************************
Gaëtan PRUVOST

LIMSI-CNRS BP 133
91403 Orsay Cedex France
Tel:+33 1 69858110

http://www.limsi.fr/Individu/pruvost/
***********************************

begin:vcard
fn;quoted-printable:Ga=C3=ABtan Pruvost
n;quoted-printable:Pruvost;Ga=C3=ABtan
email;internet:[email protected]
tel;work:+33 1
x-mozilla-html:TRUE
version:2.1
end:vcard