tracker issue : CF-3135083

Problem Description:
I would like to immediately invoke a function when it is returned from calling a function, but CF will not compile it.

Steps to Reproduce:
{code:java}
function function returnfunction(){
		var x = " with closure";
		return function(a="returnFunction default argument") {return a & x;};
	}
	writeOutput( returnFunction()() );
{code}


Actual Result:
Throws a syntax error:
Invalid CFML construct found on line 34 at column 38.
ColdFusion was looking at the following text:
(

Expected Result:
I expect the returned function to be invoked immediately, due to the second set of parentheses (). This is counterintuitive because of the way structs and arrays are addressable immediately after a function call. For example:
{code:java}
struct function getStruct() {
		return {a:1,b:2,c:3};
	}
	writeOutput( getStruct()["b"] );
{code}

This code works as expected and prints "2" and the same works for arrays. It just seems like I should be able to immediately invoke the returned function without setting an extra variable.

Any Workarounds:
Set a variable to the returned function and invoke that.

----------------------------- Additional Watson Details -----------------------------

Watson Bug ID:	3135083

External Customer Info:
External Company:  
External Customer Name: mrnate
External Customer Email:  
External Test Config: My Hardware and Environment details:

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