for (ipPtr = ipFirstPtr; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
	    if (ipPtr->pkgPtr == pkgPtr) {
		return;
	    }
	}

	/*
	 * Package isn't loaded in the current interp yet. Mark it as now being
	 * loaded.
	 */

	ipPtr = ckalloc(sizeof(InterpPackage));
	ipPtr->pkgPtr = pkgPtr;
	ipPtr->nextPtr = ipFirstPtr;
	Tcl_SetAssocData(interp, "tclLoad", LoadCleanupProc, ipPtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TclGetLoadedPackages, TclGetLoadedPackagesEx --
 *
 *	This function returns information about all of the files that are
 *	loaded (either in a particular interpreter, or for all interpreters).
 *
 * Results:
 *	The return value is a standard Tcl completion code. If successful, a
 *	list of lists is placed in the interp's result. Each sublist

TclGetLoadedPackages(
    Tcl_Interp *interp,		/* Interpreter in which to return information
				 * or error message. */
    const char *targetName)	/* Name of target interpreter or NULL. If
				 * NULL, return info about all interps;
				 * otherwise, just return info about this
				 * interpreter. */
{
    return TclGetLoadedPackagesEx(interp, targetName, NULL);
}

int
TclGetLoadedPackagesEx(
    Tcl_Interp *interp,		/* Interpreter in which to return information
				 * or error message. */
    const char *targetName,	/* Name of target interpreter or NULL. If
				 * NULL, return info about all interps;
				 * otherwise, just return info about this
				 * interpreter. */
    const char *packageName)	/* Package name or NULL. If NULL, return info
				 * for all packages.
				 */
{
    Tcl_Interp *target;
    LoadedPackage *pkgPtr;
    InterpPackage *ipPtr;
    Tcl_Obj *resultObj, *pkgDesc[2];

    if (targetName == NULL) {




	resultObj = Tcl_NewObj();
	Tcl_MutexLock(&packageMutex);
	for (pkgPtr = firstPackagePtr; pkgPtr != NULL;
		pkgPtr = pkgPtr->nextPtr) {
	    pkgDesc[0] = Tcl_NewStringObj(pkgPtr->fileName, -1);
	    pkgDesc[1] = Tcl_NewStringObj(pkgPtr->packageName, -1);
	    Tcl_ListObjAppendElement(NULL, resultObj,
		    Tcl_NewListObj(2, pkgDesc));
	}
	Tcl_MutexUnlock(&packageMutex);
	Tcl_SetObjResult(interp, resultObj);
	return TCL_OK;
    }






    target = Tcl_GetSlave(interp, targetName);
    if (target == NULL) {
	return TCL_ERROR;
    }
    ipPtr = Tcl_GetAssocData(target, "tclLoad", NULL);

    /*
     * Return information about all of the available packages.
     */
    if (packageName) {
	resultObj = NULL;

	for (; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
	    pkgPtr = ipPtr->pkgPtr;

	    if (!strcmp(packageName, pkgPtr->packageName)) {
		resultObj = Tcl_NewStringObj(pkgPtr->fileName, -1);
		break;
	    }
	}

	if (resultObj) {
	    Tcl_SetObjResult(interp, resultObj);
	}
	return TCL_OK;
    }

    /*
     * Return information about only the packages that are loaded in a given
     * interpreter.
     */

    resultObj = Tcl_NewObj();
    for (; ipPtr != NULL; ipPtr = ipPtr->nextPtr) {
	pkgPtr = ipPtr->pkgPtr;
	pkgDesc[0] = Tcl_NewStringObj(pkgPtr->fileName, -1);
	pkgDesc[1] = Tcl_NewStringObj(pkgPtr->packageName, -1);
	Tcl_ListObjAppendElement(NULL, resultObj, Tcl_NewListObj(2, pkgDesc));
    }