Index: trunk/src/org/openstreetmap/josm/tools/template_engine/Tokenizer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/tools/template_engine/Tokenizer.java	(revision 4547)
+++ trunk/src/org/openstreetmap/josm/tools/template_engine/Tokenizer.java	(revision 4548)
@@ -42,5 +42,5 @@
     public enum TokenType { CONDITION_START, VARIABLE_START, CONTEXT_SWITCH_START, END, PIPE, APOSTROPHE, TEXT, EOF }
 
-    private final List<Character> specialCharaters = Arrays.asList(new Character[] {'$', '?', '{', '}', '|', '\''});
+    private final List<Character> specialCharaters = Arrays.asList(new Character[] {'$', '?', '{', '}', '|', '\'', '!'});
 
     private final String template;