$args getting cleared out when using memcached module. Bug?

[jturmel]

We're having some really weird issues when trying to pass $args to the memcached
module.

Here is a snippet.

set $memcached_key $uri$is_args$args;
memcached_pass 127.0.0.1:11211;
error_page 404 = @fallback;

It will pass in $uri$is_args, which in our case is "/index.php?"

If we comment out the 3 lines with memcached stuff and do the following:

add_header "test" $uri$is_args$args;

You can see the entire value just fine.  It seems to be a bug in the way the
module interacts with Nginx but we can't nail it down.  We added a debug line at
the very beginning of the memcached module and it seems to be empty as soon as
it is called.

This seems to be a bug with all the extensive testing and configurations we've
tried.

Thank you,
Josh