alias overloading strange error

[simendsjo via Digitalmars-d-learn]

On Friday, 31 July 2015 at 10:56:33 UTC, vitus wrote:
> //Why expression 'foobar(1);' doesn't work?
>
>
> void foo()(){}
> void bar(int){}
>
> alias foobar = foo;
> alias foobar = bar;
>
> void main(){
> 	.foobar(1);		//OK
> 	foobar(1);		//Error: overload alias 'foo' is not a variable
>
> }

foo is a template, while bar is a function. I would have thought 
the `.foobar(1)` should have failed too... Must be some strange 
lookup rules I don't know about (or a dmd bug).
`alias foobar = foo!();` should make it work in both cases though.