Allow linking to taxonomy terms as well as posts when performing internal linking

wp_link_query_term_linking.php

<?php

add_filter( 'wp_link_query', 'seren_wp_link_query_term_linking', 99, 2 );
function seren_wp_link_query_term_linking( $results, $query ) {

  // Query taxonomy terms.
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'names' );
	$terms = get_terms( $taxonomies, array(
		'name__like' => $query['s'],
		'number'     => 20,
    'hide_empty' => false,
	) );

	// Check if any taxonomies were found.
	if ( ! empty( $terms ) ) {
		foreach ( $terms as $term ) {
      $results[] = array(
        'ID' => 'term-' . $term->term_id,
        'title' => html_entity_decode( $term->name, ENT_QUOTES, get_bloginfo( 'charset' ) ),
        'permalink' => get_term_link( intval( $term->term_id ), $term->taxonomy ),
        'info' => get_taxonomy( $term->taxonomy )->labels->singular_name,
      );
		}
	}

  return $results;
}

Hi @emzo

I've came across this when searching how to add taxonomies to the wp Insert/edit link popup layer. Did you ever experience an infinite loop of duplicated returned terms?