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diff --git a/tcl8.6/unix/tclXtTest.c b/tcl8.6/unix/tclXtTest.c
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+/*
+ * tclXtTest.c --
+ *
+ * Contains commands for Xt notifier specific tests on Unix.
+ *
+ * Copyright (c) 1997 by Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef USE_TCL_STUBS
+# define USE_TCL_STUBS
+#endif
+#include <X11/Intrinsic.h>
+#include "tcl.h"
+
+static Tcl_ObjCmdProc TesteventloopCmd;
+extern DLLEXPORT Tcl_PackageInitProc Tclxttest_Init;
+
+/*
+ * Functions defined in tclXtNotify.c for use by users of the Xt Notifier:
+ */
+
+extern void InitNotifier(void);
+extern XtAppContext TclSetAppContext(XtAppContext ctx);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tclxttest_Init --
+ *
+ * This procedure performs application-specific initialization. Most
+ * applications, especially those that incorporate additional packages,
+ * will have their own version of this procedure.
+ *
+ * Results:
+ * Returns a standard Tcl completion code, and leaves an error message in
+ * the interp's result if an error occurs.
+ *
+ * Side effects:
+ * Depends on the startup script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tclxttest_Init(
+ Tcl_Interp *interp) /* Interpreter for application. */
+{
+ if (Tcl_InitStubs(interp, "8.1", 0) == NULL) {
+ return TCL_ERROR;
+ }
+ XtToolkitInitialize();
+ InitNotifier();
+ Tcl_CreateObjCommand(interp, "testeventloop", TesteventloopCmd,
+ NULL, NULL);
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TesteventloopCmd --
+ *
+ * This procedure implements the "testeventloop" command. It is used to
+ * test the Tcl notifier from an "external" event loop (i.e. not
+ * Tcl_DoOneEvent()).
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TesteventloopCmd(
+ ClientData clientData, /* Not used. */
+ Tcl_Interp *interp, /* Current interpreter. */
+ int objc, /* Number of arguments. */
+ Tcl_Obj *const objv[]) /* Argument objects. */
+{
+ static int *framePtr = NULL;/* Pointer to integer on stack frame of
+ * innermost invocation of the "wait"
+ * subcommand. */
+
+ if (objc < 2) {
+ Tcl_WrongNumArgs(interp, 1, objv, "option ...");
+ return TCL_ERROR;
+ }
+ if (strcmp(Tcl_GetString(objv[1]), "done") == 0) {
+ *framePtr = 1;
+ } else if (strcmp(Tcl_GetString(objv[1]), "wait") == 0) {
+ int *oldFramePtr;
+ int done;
+ int oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
+
+ /*
+ * Save the old stack frame pointer and set up the current frame.
+ */
+
+ oldFramePtr = framePtr;
+ framePtr = &done;
+
+ /*
+ * Enter an Xt event loop until the flag changes. Note that we do not
+ * explicitly call Tcl_ServiceEvent().
+ */
+
+ done = 0;
+ while (!done) {
+ XtAppProcessEvent(TclSetAppContext(NULL), XtIMAll);
+ }
+ (void) Tcl_SetServiceMode(oldMode);
+ framePtr = oldFramePtr;
+ } else {
+ Tcl_AppendResult(interp, "bad option \"", Tcl_GetString(objv[1]),
+ "\": must be done or wait", NULL);
+ return TCL_ERROR;
+ }
+ return TCL_OK;
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * tab-width: 8
+ * End:
+ */