_wp_block_theme_register_classic_sidebars()

2154function _wp_block_theme_register_classic_sidebars() {2155	global $wp_registered_sidebars;2156 2157	if ( ! wp_is_block_theme() ) {2158		return;2159	}2160 2161	$classic_sidebars = get_theme_mod( 'wp_classic_sidebars' );2162	if ( empty( $classic_sidebars ) ) {2163		return;2164	}2165 2166	// Don't use `register_sidebar` since it will enable the `widgets` support for a theme.2167	foreach ( $classic_sidebars as $sidebar ) {2168		$wp_registered_sidebars[ $sidebar['id'] ] = $sidebar;2169	}2170}