fix regression in traversing to 'macros' on template-based browser views,...

fix regression in traversing to 'macros' on template-based browser views, which crept in somewhere on the way to 2.12

doc/CHANGES.rst

@@ -20,6 +20,8 @@ Features Added
 Bugs Fixed
 ++++++++++
 
+- Restore ability to traverse to 'macros' on template-based browser views.
+
 - Protect ZCTextIndex's clear method against storing Acquisition wrappers.
 
 - LP #195761: fixed ZMI XML export / import and restored it to the UI.

src/Products/Five/browser/metaconfigure.py

@@ -421,6 +421,8 @@ class ViewMixinForTemplates(BrowserView):
         raise NotFound(self, name, request)
 
     def __getitem__(self, name):
+        if name == 'macros':
+            return self.index.macros
         return self.index.macros[name]
 
     def __call__(self, *args, **kw):

src/Products/Five/browser/tests/test_metaconfigure.py

@@ -41,6 +41,12 @@ class ViewMixinForTemplatesTests(unittest.TestCase):
         index.macros = {}
         index.macros['aaa'] = aaa = object()
         self.failUnless(view['aaa'] is aaa)
+    
+    def test__getitem__gives_shortcut_to_index_macros(self):
+        view = self._makeOne()
+        view.index = index = DummyTemplate()
+        index.macros = {}
+        self.failUnless(view['macros'] is index.macros)
 
     def test___call___no_args_no_kw(self):
         view = self._makeOne()