OK, so you want get the attribute directly because of the trimming but you need to use the attr.$attr object to get the original attribute name from the normalized version, in the case that the user has use data-ng-list or some other acceptable format.
http://docs.angularjs.org/api/ng.$compile.directive.Attributes#$attr
e.g.
```
var separateorAttribute = element[0].getAttribute(attr.$attr['ngList']);
```