getopt: How does arraySep work?

[Andre Pany via Digitalmars-d-learn]

Hi,

by reading the documentation of std.getopt I would assume, this 
is a valid call

dmd -run sample.d --modelicalibs a b

``` d
import std;

void main(string[] args)
{
    string[] modelicaLibs;
    getopt(args, "modelicalibs", &modelicaLibs);
    assert(modelicaLibs == ["a", "b"]);
}
```

but it fails, as array modelicaLIbs only contains ["a"].

The std.getopt : arraySep documentation hints that it should work:
The string used to separate the elements of an array or 
associative array (default is "" which means the elements are 
separated by whitespace).

Is my understanding wrong, or is this a bug?

Kind regards
André