struct requiring this access for template?

[mgen]

I encountered an odd error while using template, it reduced to this... and I 
was wondering whats going on.

//Regex.d(20): Error: need 'this' to access member x

module templating;

import tango.io.Stdout;

public class TemplatedClass
{
        const char[] pattern;
        public this(char[] pattern){this.pattern=pattern;}
        public char[] x()
        {
                return this.pattern;
        }
}
public static TemplatedClass Templated()(char[] pattern)
{
        return new TemplatedClass(pattern);
}
public static TemplatedStruct Templated(char[] pattern)()
{
        return TemplatedStruct(pattern);
}
public struct TemplatedStruct
{
        const char[] x;
}
void main(char[][] args)
{
        TemplatedStruct x = Templated!("123");
        auto xCheck = Templated!(x.x);//Causes problems?
        
        auto y = Templated(args[1]);
        auto yCheck = Templated(y.x);//OK
        
        //Check if we got the right types...
        Stdout("x : ")(typeid(typeof(x))).newline;
        Stdout("y : ")(typeid(typeof(y))).newline;
        Stdout("--BEGIN--").newline;
        Stdout(x.x).newline;
        Stdout(y.x).newline;
        Stdout("--END--").newline;
}