/*
     * Check for a valid return options dictionary.
     */

    result = TclDictGet(NULL, objv[2], "-level", &valuePtr);
    if (result != TCL_OK || valuePtr == NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"missing return option \"-level\"", -1));
	TclPrintfResult(interp, "missing return option \"-level\"");
	Tcl_SetErrorCode(interp, "TCL", "ARGUMENT", "MISSING", (char *)NULL);
	return TCL_ERROR;
    }
    if (Tcl_GetIntFromObj(interp, valuePtr, &level) == TCL_ERROR) {
	return TCL_ERROR;
    }
    result = TclDictGet(NULL, objv[2], "-code", &valuePtr);
    if (result != TCL_OK || valuePtr == NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"missing return option \"-code\"", -1));
	TclPrintfResult(interp, "missing return option \"-code\"");
	Tcl_SetErrorCode(interp, "TCL", "ARGUMENT", "MISSING", (char *)NULL);
	return TCL_ERROR;
    }
    if (Tcl_GetIntFromObj(interp, valuePtr, &code) == TCL_ERROR) {
	return TCL_ERROR;
    }

	    }
	    if (Tcl_GetIntFromObj(interp, objv[i], &timeout) != TCL_OK) {
		result = TCL_ERROR;
		goto done;
	    }
	    if (timeout < 0) {
		Tcl_ResetResult(interp);
		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"timeout must be positive", -1));
		TclPrintfResult(interp, "timeout must be positive");
		Tcl_SetErrorCode(interp, "TCL", "EVENT", "NEGTIME", (char *)NULL);
		result = TCL_ERROR;
		goto done;
	    }
	    break;
	case OPT_LAST:
	    i++;

	    TCL_UNREACHABLE();
	}
    }

  endOfOptionLoop:
    if ((mask & (TCL_FILE_EVENTS | TCL_IDLE_EVENTS |
	    TCL_TIMER_EVENTS | TCL_WINDOW_EVENTS)) == 0) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"can't wait: would block forever", -1));
	TclPrintfResult(interp, "can't wait: would block forever");
	Tcl_SetErrorCode(interp, "TCL", "EVENT", "NO_SOURCES", (char *)NULL);
	result = TCL_ERROR;
	goto done;
    }

    if ((timeout > 0) && ((mask & TCL_TIMER_EVENTS) == 0)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"timer events disabled with timeout specified", -1));
	TclPrintfResult(interp, "timer events disabled with timeout specified");
	Tcl_SetErrorCode(interp, "TCL", "EVENT", "NO_TIME", (char *)NULL);
	result = TCL_ERROR;
	goto done;
    }

    for (result = TCL_OK; i < objc; i++) {
	result = Tcl_TraceVar2(interp, TclGetString(objv[i]), NULL,

	result = TCL_ERROR;
	goto done;
    }

    if (!(mask & TCL_FILE_EVENTS)) {
	for (i = 0; i < numItems; i++) {
	    if (vwaitItems[i].mask) {
		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"file events disabled with channel(s) specified", -1));
		TclPrintfResult(interp,
			"file events disabled with channel(s) specified");
		Tcl_SetErrorCode(interp, "TCL", "EVENT", "NO_FILE_EVENT", (char *)NULL);
		result = TCL_ERROR;
		goto done;
	    }
	}
    }

	    ((!any && (done < numItems)) || (any && !done))) {
	foundEvent = Tcl_DoOneEvent(mask);
	if (Tcl_Canceled(interp, TCL_LEAVE_ERR_MSG) == TCL_ERROR) {
	    break;
	}
	if (Tcl_LimitExceeded(interp)) {
	    Tcl_ResetResult(interp);
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("limit exceeded", -1));
	    TclPrintfResult(interp, "limit exceeded");
	    Tcl_SetErrorCode(interp, "TCL", "EVENT", "LIMIT", (char *)NULL);
	    break;
	}
	if ((numItems == 0) && (timeout == 0)) {
	    /*
	     * Behavior like "update": clear interpreter's result because
	     * event handlers could have executed commands.
	     */
	    Tcl_ResetResult(interp);
	    result = TCL_OK;
	    goto done;
	}
    }

    if (!foundEvent) {
	Tcl_ResetResult(interp);
	Tcl_SetObjResult(interp, Tcl_NewStringObj((numItems == 0) ?
		"can't wait: would wait forever" :
		"can't wait for variable(s)/channel(s): would wait forever",
	TclPrintfResult(interp, "can't wait%s: would wait forever",
		numItems ? " for variable(s)/channel(s)" : "");
		-1));
	Tcl_SetErrorCode(interp, "TCL", "EVENT", "NO_SOURCES", (char *)NULL);
	result = TCL_ERROR;
	goto done;
    }

    if (!done && !timedOut) {
	/*

    while (Tcl_DoOneEvent(flags) != 0) {
	if (Tcl_Canceled(interp, TCL_LEAVE_ERR_MSG) == TCL_ERROR) {
	    return TCL_ERROR;
	}
	if (Tcl_LimitExceeded(interp)) {
	    Tcl_ResetResult(interp);
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("limit exceeded", -1));
	    TclPrintfResult(interp, "limit exceeded");
	    return TCL_ERROR;
	}
    }

    /*
     * Must clear the interpreter's result because event handlers could have
     * executed commands.