Index: generic/nsf.h
===================================================================
diff -u -r1e14e709ba184c6daf7a2f94605a2cff65d7706c -r2510d1890d89e9b98cfdbf2106c1d4e50c9dba6a
--- generic/nsf.h	(.../nsf.h)	(revision 1e14e709ba184c6daf7a2f94605a2cff65d7706c)
+++ generic/nsf.h	(.../nsf.h)	(revision 2510d1890d89e9b98cfdbf2106c1d4e50c9dba6a)
@@ -98,6 +98,7 @@
 #define TCL_STACK_ALLOC_TRACE 1
 #define VAR_RESOLVER_TRACE 1
 #define CMD_RESOLVER_TRACE 1
+#define NRE_CALLBACK_TRACE 1
 */
 
 #if defined(PARSE_TRACE_FULL)