apply_filters( 'wp_query_search_exclusion_prefix', string $exclusion_prefix )

1483		 *1484		 * @since 4.7.01485		 *1486		 * @param string $exclusion_prefix The prefix. Default '-'. Returning1487		 *                                 an empty value disables exclusions.1488		 */1489		$exclusion_prefix = apply_filters( 'wp_query_search_exclusion_prefix', '-' );1490 1491		foreach ( $query_vars['search_terms'] as $term ) {1492			// If there is an $exclusion_prefix, terms prefixed with it should be excluded.1493			$exclude = $exclusion_prefix && str_starts_with( $term, $exclusion_prefix );1494			if ( $exclude ) {1495				$like_op  = 'NOT LIKE';