Indentation with ng-model

I have a simple ui-codemirror page with ng-model bind to a string of code like this

``` javascript
$scope.str = "Hello\
I'm Jhon";
```

But ui-codemirror not respect indentation so I put

``` javascript
$scope.str = "Hello\n\
I'm Jhon";
```

And It works fine.

Is there a solution without using `\n` default?
