- fix for collector #2339 (unicode decode error when using the 'structure'

  directive
- ZopeContext: added evaluateStructure() method in order to catch 
  UnicodeDecodeErrors and handle them properly using the unicode conflict
  resolver

lib/python/Products/PageTemplates/Expressions.py

@@ -217,11 +217,19 @@ class ZopeContext(Context):
             return value
         return bool(value)
 
+    def evaluateStructure(self, expr):
+        text = super(ZopeContext, self).evaluateStructure(expr)
+        return self._handleText(text, expr)
+
     def evaluateText(self, expr):
         """ customized version in order to get rid of unicode
             errors for all and ever
         """
         text = self.evaluate(expr)
+        return self._handleText(text, expr)
+
+
+    def _handleText(self, text, expr):
 
         if text is self.getDefault() or text is None:
             # XXX: should be unicode???

lib/python/Products/PageTemplates/tests/testZopePageTemplate.py

@@ -121,6 +121,16 @@ class ZPTUnicodeEncodingConflictResolution(ZopeTestCase):
         result = zpt.pt_render()
         self.assertEqual(result.startswith(unicode('<div></div>', 'iso-8859-15')), False)
 
+    def testStructureWithAccentedChars(self):
+        manage_addPageTemplate(self.app, 'test', 
+                               text='<div tal:content="structure python: %s" />' % "''",
+                               encoding='iso-8859-15')
+        zpt = self.app['test']
+        self.app.REQUEST.set('HTTP_ACCEPT_CHARSET', 'iso-8859-15,utf-8')
+        self.app.REQUEST.set('data', unicode('', 'iso-8859-15').encode('utf-8'))
+        result = zpt.pt_render()
+        self.assertEqual(result.startswith(unicode('<div></div>', 'iso-8859-15')), True)
+
 
 class ZopePageTemplateFileTests(ZopeTestCase):