wp-includes/functions.php:5444Appends the Widgets menu to the themes main menu.
function wp_widgets_add_menu() { global $submenu; if ( ! current_theme_supports( 'widgets' ) ) { return; } $menu_name = __( 'Widgets' ); if ( wp_is_block_theme() ) { $submenu['themes.php'][] = array( $menu_name, 'edit_theme_options', 'widgets.php' ); } else { $submenu['themes.php'][8] = array( $menu_name, 'edit_theme_options', 'widgets.php' ); } ksort( $submenu['themes.php'], SORT_NUMERIC );}Introduced in 2.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.