Associative array with duplicated keys?

[tcak via Digitalmars-d-learn]

On Thursday, 5 November 2015 at 08:55:10 UTC, Andrea Fontana 
wrote:
> Check this:
> http://dpaste.dzfl.pl/ebbb3ebac60e
>
> It doesn't give any error or warning. And writeln seems 
> confused (do you see that "," at the end?)

I am sure the coder of writeln was lazy to prevent putting ", " 
after last item. You can report it as a bug I guess.