Incorrect parsing for interpolation in a directive

[stefan2718]

There is incorrect parsing in the case of interpolating the translation ID inside a directive. The following line is pulled into the language file like so:

File.jade:

span(translate="{{$ctrl.cardData.comparisonString}}") {{$ctrl.cardData.comparisonString}}

en.json:

"{{$ctrl": {
    "cardData": {
        "comparisonString}}": ""
     }
}

[firehist]

Hey @stefan2718
Thanks for this report!! 😭

I'll add unit test for this use case but not before April (I'm off few days).
I also duplicate this issue to the new core project of this grunt task: angular-translate-extract ==> Boulangerie/angular-translate-extract#9