documentcloud/backbone — comment on commit 34e0f7fb26c3c2a13e7dfdc072b33fd7b971c72b
File: backbone.js line 247
By Yahasana:

why not optimize to

``` js
if (!options.silent) {
for (var attr in changes) {
this.trigger('change:' + attr, this, changes[attr], options);
}
}
```