Tell SearchWP's Term Highlight Extension to skip highlighting terms for searches performed with specific search engines

gistfile1.php

<?php

function my_searchwp_th_excluded_engines( $load_posts, $search_args ) {
    // DO NOT highlight terms when using the 'my_supplemental' search engine
    return array( 'my_supplemental' );
}

add_filter( 'searchwp_th_excluded_engines', 'my_searchwp_th_excluded_engines', 10, 2 );