apply_filters( 'term_search_min_chars', int $characters, WP_Taxonomy $taxonomy_object, string $search )

139	 * @since 4.0.0140	 *141	 * @param int         $characters      The minimum number of characters required. Default 2.142	 * @param WP_Taxonomy $taxonomy_object The taxonomy object.143	 * @param string      $search          The search term.144	 */145	$term_search_min_chars = (int) apply_filters( 'term_search_min_chars', 2, $taxonomy_object, $search );146 147	/*148	 * Require $term_search_min_chars chars for matching (default: 2)149	 * ensure it's a non-negative, non-zero integer.150	 */151	if ( ( 0 === $term_search_min_chars ) || ( strlen( $search ) < $term_search_min_chars ) ) {