Index: __init__.py
===================================================================
--- __init__.py	(revision 3137)
+++ __init__.py	(working copy)
@@ -75,6 +75,8 @@
 BLOCK_TAG_END = '%}'
 VARIABLE_TAG_START = '{{'
 VARIABLE_TAG_END = '}}'
+SINGLE_VARIABLE_TAG_START = '{'
+SINGLE_VARIABLE_TAG_END = '}'
 
 ALLOWED_VARIABLE_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.'