[nem-en] About opening namespace

[vc]

   > Yes, I would say it is bug in complier - aliases should be expanded in
   > such kind of code.
   
   I report bug http://nemerle.org/bugs/view.php?id=730
   
   Kamil, please, when you will fix this bug intend that the code of
expanding alias will be necessary in completion engine.
   
   PS
   
   Whether should work the following code?
   
   using System;
   
   namespace X
   {
     // It assumes, that namespace System is opened earlier
     using Collections;
     ...
   }
   
   In C# this code will not work, but in my opinion it's logical.