But it not work. There are some bugs in /xoopseditor/ckeditor/ckeditor.php:
First. Path to '/xoopseditor/ckeditor/module' is invalid.
Second. Argument for file_exists has to be PATH not URL.
Lines 63-64 should look like
if ( file_exists( XOOPS_ROOT_PATH . $this->rootPath . '/module/config.'.$dirname.'.js' ) )
$GLOBALS['xoTheme']->addScript( XOOPS_URL . $this->rootPath . '/module/config.'.$dirname.'.js' );
and lines 80-81
if ( file_exists( XOOPS_ROOT_PATH . $this->rootPath . '/module/config.'.$dirname.'.js' ) )
$ret .= '<script src="' . XOOPS_URL . $this->rootPath . '/module/config.'.$dirname.'.js' . '" type="text/javascript"></script>';
EDIT: I add this to BugTracker.