search404.module

<?php

/**
 * @file
 * The search404 module file, does all the searching when a 404 occurs.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Drupal\Core\Link;

/**
 * Implements hook_help().
 *
 * @inheritdoc
 */
function search404_help($route_name, RouteMatchInterface $route_match) {
  $output = '';
  switch ($route_name) {
    // Main module help for the download_all_files module.
    case 'help.page.search404':
      $config_link = Url::fromRoute('search404.settings');
      $link = Link::fromTextAndUrl(t('@text', ['@text' => 'search 404 settings']), $config_link)->toString();
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Instead of showing a default "Page not found"
      for a 404 error, this module performs a search on the keywords in
      the URL and display results based on the search. You can add basic
      settings for the 404 resulting page and other search404
      configurations in @link page.', ['@link' => $link]) . '</p>';
      return $output;
  }
}