Index: compile_rules_graph.py
==================================================================
--- compile_rules_graph.py
+++ compile_rules_graph.py
@@ -37,10 +37,12 @@
 def genTokenLines (sTokenLine, dDef):
     "tokenize a string and return a list of lines of tokens"
     lToken = sTokenLine.split()
     lTokenLines = None
     for i, sToken in enumerate(lToken):
+        if sToken.startswith("({") and sToken.endswith("})") and sToken[1:-1] in dDef:
+            sToken = "(" + dDef[sToken[1:-1]] + ")"
         if sToken.startswith("{") and sToken.endswith("}") and sToken in dDef:
             sToken = dDef[sToken]
         if ( (sToken.startswith("[") and sToken.endswith("]")) or (sToken.startswith("([") and sToken.endswith("])")) ):
             bSelectedGroup = sToken.startswith("(") and sToken.endswith(")")
             if bSelectedGroup: