I couldnt find much as for other bugs/feature requests, Bug 224463 would be similar but not really.

For javascript: we have an anonymous function with object that we expose back to window eg

(function(window)
{
  function somefunc()
  {
    // this method wont be exposed for code completion
    // as was not passed back to window object
  }

  // this obj should have code completion outside of anonymous function
  var obj = {
    method: function()
    {
      // more...code
      return obj.method.instance.meth1();
    },
    literal:{
      key1: 'val1'
    }
  };
// set some vars
obj.method.instance = new somelib();
// expose obj back to window
window.obj = obj;
})(window);

i utilise this pattern so i can instantiate an otherwise static object.

it would be nice if the editor could pick up on this fact and expose any object or var that was explicitly exposed (eg window.obj = obj;).

Just a thought.

Thanks