staylor / WordPress

	}

	$term_group = 0;

	if ( $args['alias_of'] ) {

		$alias = get_term_by( 'slug', $args['alias_of'], $taxonomy );

		if ( ! empty( $alias->term_group ) ) {

			// The alias we want is already in a group, so let's use that one.

			$term_group = $alias->term_group;

		} elseif ( ! empty( $alias->term_id ) ) {

			/*

			 * The alias is not in a group, so we create a new one

			 * and add the alias to it.

			 */

			$term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1;

			wp_update_term( $alias->term_id, $taxonomy, array(

				'term_group' => $term_group,

			) );

		}

	}

	/*

	 * Prevent the creation of terms with duplicate names at the same level of a taxonomy hierarchy,

	$parsed_args['slug'] = $slug;

	$term_group = isset( $parsed_args['term_group'] ) ? $parsed_args['term_group'] : 0;

	if ( $args['alias_of'] ) {

		$alias = get_term_by( 'slug', $args['alias_of'], $taxonomy );

		if ( ! empty( $alias->term_group ) ) {

			// The alias we want is already in a group, so let's use that one.

			$term_group = $alias->term_group;

		} elseif ( ! empty( $alias->term_id ) ) {

			/*

			 * The alias is not in a group, so we create a new one

			 * and add the alias to it.

			 */

			$term_group = $wpdb->get_var("SELECT MAX(term_group) FROM $wpdb->terms") + 1;

			wp_update_term( $alias->term_id, $taxonomy, array(

				'term_group' => $term_group,

			) );

		}

		$parsed_args['term_group'] = $term_group;

	}

	/**

	 * Filters the term parent.