Variables and includes

[Daniel L. Miller]

Is it possible to use a variable from one configuration in a included 
config file?  Example:

set $a = "hello";
include test.conf;

[test.conf]
if ($a = "hello") {
     set $a = "world";
}
# something that works with $a

Within the scope of the commands of test.conf, will $a be "hello" or 
"world"?  Currently my usage like this gives me a, "using unitialized 
variable" warning.
-- 
Daniel