[racket] In universe, what does this mean?

On Jan 8, 2013, at 5:24 PM, Marco Morazan wrote:

> When using universe I encountered the following error:
> 
>         World to remove for mail list not found
> 
> What does this mean?


I don't know. I have grepped thru the implementation of universe/world and the word 'remove' does not show up. When you try to send mail to a world that has been removed your console will display an error of this format: 

 SomeWorld not on list 

But you don't seem to be doing this. 


> I can trace to:
> 
> (make-bundle (make-univ empty INIT-WORLD) empty (univ-worlds u))
> 
> univ is a structure that contains a list of iworlds and a structure
> called world.
> 
> In essence, I am trying to disconnect all worlds from the
> server/universe when a game ends. It was my understanding this should
> result in the server restarting. Instead, the server disappears with
> the above error is reported.


This was a bug. In essence, there was a path to disconnect a world w/o looking checking for emptiness. 

I will commit a fix after I re-run the world-universe tests. 

-- Matthias