angular/angular.js — pull request #6453 by fredericbonjour (2014-02-26 14:56:04+00:00)
Title: feat($interpolate): Added 'strictMode' option on $interpolateProvider to tell $compileProvider not to denormalize directives template.

With this option set to true, the default symbols '{{' and '}}' are left as is in the templates, and only the startSymbol and endSymbol defined by the developer are used.