An annoyance when using eco and you pass it a backbone model, you must bind Model#escape yourself.

eco_backbone_annoyance.js

//This is a template generated by eco
var ecoTemplate = function (__obj) {
  if (!__obj) __obj = {};
  var __out = [], __capture = function(callback) {
    var out = __out, result;
    __out = [];
    callback.call(this);
    result = __out.join('');
    __out = out;
    return __safe(result);
  }, __sanitize = function(value) {
    if (value && value.ecoSafe) {
      return value;
    } else if (typeof value !== 'undefined' && value != null) {
      return __escape(value); //<-- here's the offending line
    } else {
      return '';
    }
  }, __safe, __objSafe = __obj.safe, __escape = __obj.escape;
  __safe = __obj.safe = function(value) {
    if (value && value.ecoSafe) {
      return value;
    } else {
      if (!(typeof value !== 'undefined' && value != null)) value = '';
      var result = new String(value);
      result.ecoSafe = true;
      return result;
    }
  };
  if (!__escape) {
    __escape = __obj.escape = function(value) {
      return ('' + value)
        .replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;');
    };
  }
  (function() {
    
      __out.push('I has info: ');
    
      __out.push(__sanitize(this.hasInfo()));
    
      __out.push('\n');
    
  }).call(__obj);
  __obj.safe = __objSafe, __obj.escape = __escape;
  return __out.join('');
};

//And here's a backbone model that has a method on it
var MyModel = Backbone.Model.extend({
  hasInfo: function(){ return true; }
});

eco_backbone_annoyance_spec.js

describe('eco calling __obj.escape()',function(){
  context("without binding #escape", function(){
    it("explodes",function(){
      expect(function(){
        ecoTemplate(new MyModel())
      }).toThrow();
    });
  });
  
  context("when binding #escape", function(){
    var myModel;
    beforeEach(function(){
      myModel = new MyModel();
      _.bindAll(myModel);
    });
    it("does *NOT* explode",function(){
      expect(function(){
        ecoTemplate(myModel)
      }).not.toThrow();
    });
  });
});