diff --git a/src/wp-includes/class-walker-nav-menu.php b/src/wp-includes/class-walker-nav-menu.php
index c97188b..83dbfed 100644
a
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b
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public function start_lvl( &$output, $depth = 0, $args = array() ) { |
59 | 59 | } |
60 | 60 | $indent = str_repeat( $t, $depth ); |
61 | 61 | |
| 62 | // Default class. |
| 63 | $classes = array( 'sub-menu' ); |
| 64 | |
62 | 65 | /** |
63 | 66 | * Filters the CSS class(es) applied to a menu list element. |
64 | 67 | * |
… |
… |
public function start_lvl( &$output, $depth = 0, $args = array() ) { |
68 | 71 | * @param stdClass $args An object of `wp_nav_menu()` arguments. |
69 | 72 | * @param int $depth Depth of menu item. Used for padding. |
70 | 73 | */ |
| 74 | $class_names = join( ' ', apply_filters( 'nav_menu_submenu_css_class', $classes, $args, $depth ) ); |
| 75 | $class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : ''; |
71 | 76 | |
72 | | $classes = array( 'sub-menu' ); |
73 | | $classes = apply_filters( 'nav_menu_submenu_css_class', $classes, $args, $depth ); |
74 | | $class_names = join( ' ', $classes ); |
75 | | |
76 | | $output .= "{$n}{$indent}<ul class='" . esc_attr( $class_names ) . "'>{$n}"; |
| 77 | $output .= "{$n}{$indent}<ul $class_names>{$n}"; |
77 | 78 | } |
78 | 79 | |
79 | 80 | /** |