fix(typeahead): evaluate matches source against a correct scope

Closes #1238

src/typeahead/test/typeahead.spec.js

@@ -462,6 +462,18 @@ describe('typeahead tests', function () {
 
       expect(element).toBeOpenWithActive(2, 0);
     });
+
+    it('issue #1238 - allow names like "query" to be used inside "in" expressions ', function () {
+
+      $scope.query = function() {
+        return ['foo', 'bar'];
+      };
+
+      var element = prepareInputEl("<div><input ng-model='result' typeahead='item for item in query($viewValue)'></div>");
+      changeInputValueTo(element, 'bar');
+
+      expect(element).toBeOpenWithActive(2, 0);
+    });
   });
 
   describe('input formatting', function () {

src/typeahead/typeahead.js

@@ -97,7 +97,7 @@ angular.module('ui.bootstrap.typeahead', ['ui.bootstrap.position', 'ui.bootstrap
 
         var locals = {$viewValue: inputValue};
         isLoadingSetter(originalScope, true);
-        $q.when(parserResult.source(scope, locals)).then(function(matches) {
+        $q.when(parserResult.source(originalScope, locals)).then(function(matches) {
 
           //it might happen that several async queries were in progress if a user were typing fast
           //but we are interested only in responses that correspond to the current view value