foreach UFCS

[Rene Zwanenburg via Digitalmars-d-learn]

On Thursday, 31 March 2016 at 13:39:25 UTC, ixid wrote:
> What is going on with UFCS and foreach?
>
> foreach(i;0..5).writeln;
>
> This prints five line breaks.
>
> foreach(i;0..5).i.writeln;
>
> This will not compile.
>
> foreach(i;0..5).writeln(i);
>
> This writes out 1 to 4 on separate lines. Is this supposed to 
> work? I thought a.b would be rewritten to b(a) with UFCS but 
> writeln(foreach(i;0..5)) is nonsensical and does not compile 
> and should be the same as foreach(i;0..5).writeln;

The compiler interprets it as a foreach without curly braces. 
With curlies it would look like:
foreach(i; 0..5)
{
   .writeln();
}

In this context the dot means the writeln lookup should happen 
from the module level scope.