apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', bool $bad_slug, string $slug )

5507		 *5508		 * @since 3.1.05509		 *5510		 * @param bool   $bad_slug Whether the slug would be bad as an attachment slug.5511		 * @param string $slug     The post slug.5512		 */5513		$is_bad_attachment_slug = apply_filters( 'wp_unique_post_slug_is_bad_attachment_slug', false, $slug );5514 5515		if ( $post_name_check5516			|| in_array( $slug, $feeds, true ) || 'embed' === $slug5517			|| $is_bad_attachment_slug5518		) {5519			$suffix = 2;