Index: generic/nsf.c
===================================================================
diff -u -r9124d823b4eb4a8b5969b9fa1b6eab7252ba83b4 -r364a9eda329acd7d20173a4165d71394d3061aae
--- generic/nsf.c	(.../nsf.c)	(revision 9124d823b4eb4a8b5969b9fa1b6eab7252ba83b4)
+++ generic/nsf.c	(.../nsf.c)	(revision 364a9eda329acd7d20173a4165d71394d3061aae)
@@ -16412,11 +16412,12 @@
   *outObjPtr = objPtr;
 
   /*
-   * If argument checking is turned off, and we do not have an converter, do
-   * nothing.
+   * Omit argument checking, provided that ...
+   * ... argument checking is turned off *and* no converter is specified, or
+   * ... the ruling parameter option is 'initcmd'
    */
-  if (unlikely(doCheck == 0) && (pPtr->flags & (NSF_ARG_IS_CONVERTER|NSF_ARG_INITCMD)) == 0) {
-    /*fprintf(stderr, "*** omit  argument check for arg %s flags %.6x\n", pPtr->name, pPtr->flags);*/
+  if ((unlikely(doCheck == 0) && (pPtr->flags & (NSF_ARG_IS_CONVERTER)) == 0) || (pPtr->flags & (NSF_ARG_INITCMD))) {
+    /* fprintf(stderr, "*** omit  argument check for arg %s flags %.6x\n", pPtr->name, pPtr->flags); */
     *clientData = ObjStr(objPtr);
     return TCL_OK;
   }