More work on Global getVariabke.

Global.cpp

@@ -55,6 +55,11 @@ namespace jet {
       coreutils::MString name = variable.getTokenInclude("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._-");
       if(variable.ifNext("]"))
 	return name;
+      if(variable.startsWith("$[")) {
+	 name << getVariable(variable);
+	 return name;
+      }	 
+      return coreutils::MString("");
    }
    
 }