js/libs/ember-1.5.1.js
function bind(property, options, preserveContext, shouldDisplay, valueNormalizer, childProperties) {
  var data = options.data,
      fn = options.fn,
      inverse = options.inverse,
      view = data.view,
      currentContext = this,
      normalized, observer, i;

  normalized = normalizePath(currentContext, property, data);

  // Set up observers for observable objects
  if ('object' === typeof this) {
    if (data.insideGroup) {
      observer = function() {
        Ember.run.once(view, 'rerender');
      };

      var template, context, result = handlebarsGet(currentContext, property, options);

      result = valueNormalizer ? valueNormalizer(result) : result;

      context = preserveContext ? currentContext : result;
      if (shouldDisplay(result)) {
        template = fn;
      } else if (inverse) {
        template = inverse;
      }

      template(context, { data: options.data });
    } else {
      // Create the view that will wrap the output of this template/property
      // and add it to the nearest view's childViews array.
      // See the documentation of Ember._HandlebarsBoundView for more.
      var bindView = view.createChildView(Ember._HandlebarsBoundView, {
        preserveContext: preserveContext,
        shouldDisplayFunc: shouldDisplay,
        valueNormalizerFunc: valueNormalizer,
        displayTemplate: fn,
        inverseTemplate: inverse,
        path: property,
        pathRoot: currentContext,
        previousContext: currentContext,
        isEscaped: !options.hash.unescaped,
        templateData: options.data
      });

      if (options.hash.controller) {
        bindView.set('_contextController', this.container.lookupFactory('controller:'+options.hash.controller).create({
          container: currentContext.container,
          parentController: currentContext,
          target: currentContext
        }));
      }

      view.appendChild(bindView);

      observer = function() {
        Ember.run.scheduleOnce('render', bindView, 'rerenderIfNeeded');
      };
    }

    // Observes the given property on the context and
    // tells the Ember._HandlebarsBoundView to re-render. If property
    // is an empty string, we are printing the current context
    // object ({{this}}) so updating it is not our responsibility.
    if (normalized.path !== '') {
      view.registerObserver(normalized.root, normalized.path, observer);
      if (childProperties) {
        for (i=0; i<childProperties.length; i++) {
          view.registerObserver(normalized.root, normalized.path+'.'+childProperties[i], observer);
        }
      }
    }
  } else {
    // The object is not observable, so just render it out and
    // be done with it.
    data.buffer.push(handlebarsGetEscaped(currentContext, property, options));
  }
}
function bind(property, options, preserveContext, shouldDisplay, valueNormalizer, childProperties) {
  var data = options.data,
      fn = options.fn,
      inverse = options.inverse,
      view = data.view,
      currentContext = this,
      normalized, observer, i;

  normalized = normalizePath(currentContext, property, data);

  // Set up observers for observable objects
  if ('object' === typeof this) {
    if (data.insideGroup) {
      observer = function() {
        Ember.run.once(view, 'rerender');
      };

      var template, context, result = handlebarsGet(currentContext, property, options);

      result = valueNormalizer ? valueNormalizer(result) : result;

      context = preserveContext ? currentContext : result;
      if (shouldDisplay(result)) {
        template = fn;
      } else if (inverse) {
        template = inverse;
      }

      template(context, { data: options.data });
    } else {
      // Create the view that will wrap the output of this template/property
      // and add it to the nearest view's childViews array.
      // See the documentation of Ember._HandlebarsBoundView for more.
      var bindView = view.createChildView(Ember._HandlebarsBoundView, {
        preserveContext: preserveContext,
        shouldDisplayFunc: shouldDisplay,
        valueNormalizerFunc: valueNormalizer,
        displayTemplate: fn,
        inverseTemplate: inverse,
        path: property,
        pathRoot: currentContext,
        previousContext: currentContext,
        isEscaped: !options.hash.unescaped,
        templateData: options.data
      });

      if (options.hash.controller) {
        bindView.set('_contextController', this.container.lookupFactory('controller:'+options.hash.controller).create({
          container: currentContext.container,
          parentController: currentContext,
          target: currentContext
        }));
      }

      view.appendChild(bindView);

      observer = function() {
        Ember.run.scheduleOnce('render', bindView, 'rerenderIfNeeded');
      };
    }

    // Observes the given property on the context and
    // tells the Ember._HandlebarsBoundView to re-render. If property
    // is an empty string, we are printing the current context
    // object ({{this}}) so updating it is not our responsibility.
    if (normalized.path !== '') {
      view.registerObserver(normalized.root, normalized.path, observer);
      if (childProperties) {
        for (i=0; i<childProperties.length; i++) {
          view.registerObserver(normalized.root, normalized.path+'.'+childProperties[i], observer);
        }
      }
    }
  } else {
    // The object is not observable, so just render it out and
    // be done with it.
    data.buffer.push(handlebarsGetEscaped(currentContext, property, options));
  }
}
Binds a property into the DOM. This will create a hook in DOM that the KVO system will look for and update if the property changes.