diff -u b/core/includes/install.core.inc b/core/includes/install.core.inc
--- b/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1647,7 +1647,7 @@
       $operations[] = array('locale_translation_batch_fetch_import', array('drupal', $language->getId(), array()));
     }
 
-    include_once(drupal_get_path('module', 'locale') . '/locale.fetch.inc');
+    include_once drupal_get_path('module', 'locale') . '/locale.fetch.inc';
     $batch = array(
       'operations' => $operations,
       'title' => t('Updating translations.'),
@@ -1696,7 +1696,7 @@
             'status' => 1,
           );
           \Drupal::service('locale.project')->set($data['name'], $data);
-          include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+          include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
           locale_translation_check_projects_local(array('drupal'), array($langcode));
         }
       }
diff -u b/core/includes/module.inc b/core/includes/module.inc
--- b/core/includes/module.inc
+++ b/core/includes/module.inc
@@ -92,7 +92,7 @@
 
   $path = drupal_get_path('module', $module) . "/$module.install";
   if (file_exists($path)) {
-    include_once($path);
+    include_once $path;
     return TRUE;
   }
   return FALSE;
diff -u b/core/modules/content_translation/content_translation.module b/core/modules/content_translation/content_translation.module
--- b/core/modules/content_translation/content_translation.module
+++ b/core/modules/content_translation/content_translation.module
@@ -386,7 +386,7 @@
   }
 
   if ($field->isTranslatable()) {
-    include_once(drupal_get_path('module', 'content_translation') . '/content_translation.admin.inc');
+    include_once drupal_get_path('module', 'content_translation') . '/content_translation.admin.inc';
     $element = content_translation_field_sync_widget($field);
     if ($element) {
       $form['third_party_settings']['content_translation']['translation_sync'] = $element;
@@ -533,7 +533,7 @@
  * Implements hook_form_FORM_ID_alter() for language_content_settings_form().
  */
 function content_translation_form_language_content_settings_form_alter(array &$form, FormStateInterface $form_state) {
-  include_once(drupal_get_path('module', 'content_translation') . '/content_translation.admin.inc');
+  include_once drupal_get_path('module', 'content_translation') . '/content_translation.admin.inc';
   _content_translation_form_language_content_settings_form_alter($form, $form_state);
 }
 
@@ -541,7 +541,7 @@
  * Implements hook_preprocess_HOOK() for language-content-settings-table.html.twig.
  */
 function content_translation_preprocess_language_content_settings_table(&$variables) {
-  include_once(drupal_get_path('module', 'content_translation') . '/content_translation.admin.inc');
+  include_once drupal_get_path('module', 'content_translation') . '/content_translation.admin.inc';
   _content_translation_preprocess_language_content_settings_table($variables);
 }
 
diff -u b/core/modules/locale/locale.batch.inc b/core/modules/locale/locale.batch.inc
--- b/core/modules/locale/locale.batch.inc
+++ b/core/modules/locale/locale.batch.inc
@@ -179,7 +179,7 @@
     if (isset($source->type)) {
       if ($source->type == LOCALE_TRANSLATION_REMOTE || $source->type == LOCALE_TRANSLATION_LOCAL) {
         $file = $source->files[LOCALE_TRANSLATION_LOCAL];
-        include_once(drupal_get_path('module', 'locale') . '/locale.bulk.inc');
+        include_once drupal_get_path('module', 'locale') . '/locale.bulk.inc';
         $options += array(
           'message' => t('Importing translation for %project.', array('%project' => $source->project)),
         );
@@ -214,7 +214,7 @@
  *   Batch results.
  */
 function locale_translation_batch_fetch_finished($success, $results) {
-  include_once(drupal_get_path('module', 'locale') . '/locale.bulk.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.bulk.inc';
   if ($success) {
     \Drupal::state()->set('locale.translation_last_checked', REQUEST_TIME);
   }
diff -u b/core/modules/locale/locale.bulk.inc b/core/modules/locale/locale.bulk.inc
--- b/core/modules/locale/locale.bulk.inc
+++ b/core/modules/locale/locale.bulk.inc
@@ -85,7 +85,7 @@
  *   An array of interface translation files keyed by their URI.
  */
 function locale_translate_get_interface_translation_files(array $projects = array(), array $langcodes = array()) {
-  include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
   $files = array();
   $projects = $projects ? $projects : array_keys(locale_translation_get_projects());
   $langcodes = $langcodes ? $langcodes : array_keys(locale_translatable_language_list());
diff -u b/core/modules/locale/locale.fetch.inc b/core/modules/locale/locale.fetch.inc
--- b/core/modules/locale/locale.fetch.inc
+++ b/core/modules/locale/locale.fetch.inc
@@ -27,7 +27,7 @@
  *   Batch definition array.
  */
 function locale_translation_batch_update_build($projects = array(), $langcodes = array(), $options = array()) {
-  include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
   $projects = $projects ? $projects : array_keys(locale_translation_get_projects());
   $langcodes = $langcodes ? $langcodes : array_keys(locale_translatable_language_list());
   $status_options = $options;
diff -u b/core/modules/locale/locale.module b/core/modules/locale/locale.module
--- b/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -226,7 +226,7 @@
   \Drupal::service('locale.storage')->deleteTranslations(array('language' => $language->id()));
 
   // Remove interface translation files.
-  include_once(drupal_get_path('module', 'locale') . '/locale.bulk.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.bulk.inc';
   locale_translate_delete_translation_files(array(), array($language->id()));
 
   // Remove translated configuration objects.
@@ -355,7 +355,7 @@
   // and a translatable language was set.
   // Update tasks are added to the queue here but processed by Drupal's cron.
   if ($frequency = \Drupal::config('locale.settings')->get('translation.update_interval_days') && locale_translatable_language_list()) {
-    include_once(drupal_get_path('module', 'locale') . '/locale.translation.inc');
+    include_once drupal_get_path('module', 'locale') . '/locale.translation.inc';
     locale_cron_fill_queue();
   }
 }
@@ -407,14 +407,14 @@
   // built-in support for translation imports in the installer.
   if (!drupal_installation_attempted() && locale_translatable_language_list()) {
     if (\Drupal::config('locale.settings')->get('translation.import_enabled')) {
-      include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+      include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
 
       // Update the list of translatable projects and start the import batch.
       // Only when new projects are added the update batch will be triggered.
       // Not each enabled module will introduce a new project. E.g. sub modules.
       $projects = array_keys(locale_translation_build_projects());
       if ($list = array_intersect($list, $projects)) {
-        include_once(drupal_get_path('module', 'locale') . '/locale.fetch.inc');
+        include_once drupal_get_path('module', 'locale') . '/locale.fetch.inc';
         // Get translation status of the projects, download and update
         // translations.
         $options = _locale_translation_default_update_options();
@@ -449,7 +449,7 @@
   $components += array('module' => array(), 'theme' => array());
   $list = array_merge($components['module'], $components['theme']);
   if ($language_list = locale_translatable_language_list()) {
-    include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+    include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
     \Drupal::moduleHandler()->loadInclude('locale', 'bulk.inc');
 
     // Only when projects are removed, the translation files and records will be
@@ -882,7 +882,7 @@
 function locale_translation_get_status($projects = NULL, $langcodes = NULL) {
   $result = array();
   $status = \Drupal::state()->get('locale.translation_status');
-  include_once(drupal_get_path('module', 'locale') . '/locale.translation.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.translation.inc';
   $projects = $projects ? $projects : array_keys(locale_translation_get_projects());
   $langcodes = $langcodes ? $langcodes : array_keys(locale_translatable_language_list());
 
@@ -922,7 +922,7 @@
   // improve performance for large sites.
 
   // Load the translation status or build it if not already available.
-  include_once(drupal_get_path('module', 'locale') . '/locale.translation.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.translation.inc';
   $status = locale_translation_get_status();
   if (empty($status)) {
     $projects = locale_translation_get_projects(array($project));
diff -u b/core/modules/locale/locale.pages.inc b/core/modules/locale/locale.pages.inc
--- b/core/modules/locale/locale.pages.inc
+++ b/core/modules/locale/locale.pages.inc
@@ -17,7 +17,7 @@
  * @see locale_menu()
  */
 function locale_translation_manual_status() {
-  include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+  include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
 
   // Check the translation status of all translatable projects in all languages.
   // First we clear the cached list of projects. Although not strictly
diff -u b/core/modules/locale/locale.translation.inc b/core/modules/locale/locale.translation.inc
--- b/core/modules/locale/locale.translation.inc
+++ b/core/modules/locale/locale.translation.inc
@@ -61,7 +61,7 @@
     // https://www.drupal.org/node/1777106 is a follow-up issue to make the
     // check for possible out-of-date project information more robust.
     if ($row_count == 0) {
-      include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+      include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
       // At least the core project should be in the database, so we build the
       // data if none are found.
       locale_translation_build_projects();
@@ -352,7 +352,7 @@
   // For each project+language combination a number of tasks are added to
   // the queue.
   if ($updates) {
-    include_once(drupal_get_path('module', 'locale') . '/locale.fetch.inc');
+    include_once drupal_get_path('module', 'locale') . '/locale.fetch.inc';
     $options = _locale_translation_default_update_options();
     $queue = \Drupal::queue('locale_translation', TRUE);
 
diff -u b/core/modules/locale/src/Tests/LocaleUpdateTest.php b/core/modules/locale/src/Tests/LocaleUpdateTest.php
--- b/core/modules/locale/src/Tests/LocaleUpdateTest.php
+++ b/core/modules/locale/src/Tests/LocaleUpdateTest.php
@@ -21,8 +21,8 @@
    */
   protected function setUp() {
     parent::setUp();
-    include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
-    include_once(drupal_get_path('module', 'locale') . '/locale.fetch.inc');
+    include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
+    include_once drupal_get_path('module', 'locale') . '/locale.fetch.inc';
     $admin_user = $this->drupalCreateUser(array('administer modules', 'administer site configuration', 'administer languages', 'access administration pages', 'translate interface'));
     $this->drupalLogin($admin_user);
     // We use German as test language. This language must match the translation
@@ -35,7 +35,7 @@
    * Checks if a list of translatable projects gets build.
    */
   public function testUpdateProjects() {
-    include_once(drupal_get_path('module', 'locale') . '/locale.compare.inc');
+    include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
 
     // Make the test modules look like a normal custom module. i.e. make the
     // modules not hidden. locale_test_system_info_alter() modifies the project
diff -u b/core/modules/node/node.module b/core/modules/node/node.module
--- b/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -690,13 +690,13 @@
       $nids = \Drupal::entityQuery('node')
         ->condition('uid', $account->id())
         ->execute();
-      include_once(drupal_get_path('module', 'node') . '/node.admin.inc');
+      include_once drupal_get_path('module', 'node') . '/node.admin.inc';
       node_mass_update($nids, array('status' => 0), NULL, TRUE);
       break;
 
     case 'user_cancel_reassign':
       // Anonymize all of the nodes for this old account.
-      include_once(drupal_get_path('module', 'node') . '/node.admin.inc');
+      include_once drupal_get_path('module', 'node') . '/node.admin.inc' ;
       $vids = \Drupal::entityManager()->getStorage('node')->userRevisionIds($account);
       node_mass_update($vids, array(
         'uid' => 0,
diff -u b/core/modules/tracker/src/Controller/TrackerPage.php b/core/modules/tracker/src/Controller/TrackerPage.php
--- b/core/modules/tracker/src/Controller/TrackerPage.php
+++ b/core/modules/tracker/src/Controller/TrackerPage.php
@@ -18,7 +18,7 @@
    * Content callback for the tracker.page route.
    */
   public function getContent() {
-    include_once(drupal_get_path('module', 'tracker') . '/tracker.pages.inc');
+    include_once drupal_get_path('module', 'tracker') . '/tracker.pages.inc' ;
     return tracker_page();
   }
 }
diff -u b/core/modules/tracker/src/Controller/TrackerUserRecent.php b/core/modules/tracker/src/Controller/TrackerUserRecent.php
--- b/core/modules/tracker/src/Controller/TrackerUserRecent.php
+++ b/core/modules/tracker/src/Controller/TrackerUserRecent.php
@@ -19,7 +19,7 @@
    * Content callback for the tracker.users_recent_content route.
    */
   public function getContent(UserInterface $user) {
-    include_once(drupal_get_path('module', 'tracker') . '/tracker.pages.inc');
+    include_once drupal_get_path('module', 'tracker') . '/tracker.pages.inc' ;
     return tracker_page($user);
   }
 }
diff -u b/core/modules/tracker/src/Controller/TrackerUserTab.php b/core/modules/tracker/src/Controller/TrackerUserTab.php
--- b/core/modules/tracker/src/Controller/TrackerUserTab.php
+++ b/core/modules/tracker/src/Controller/TrackerUserTab.php
@@ -19,7 +19,7 @@
    * Content callback for the tracker.user_tab route.
    */
   public function getContent(UserInterface $user) {
-    include_once(drupal_get_path('module', 'tracker') . '/tracker.pages.inc');
+    include_once drupal_get_path('module', 'tracker') . '/tracker.pages.inc' ;
     return tracker_page($user);
   }
 
diff -u b/core/modules/update/src/Tests/UpdateContribTest.php b/core/modules/update/src/Tests/UpdateContribTest.php
--- b/core/modules/update/src/Tests/UpdateContribTest.php
+++ b/core/modules/update/src/Tests/UpdateContribTest.php
@@ -297,7 +297,7 @@
    * Tests updates with a hidden base theme.
    */
   function testUpdateHiddenBaseTheme() {
-    include_once(drupal_get_path('module', 'update') . '/update.compare.inc');
+    include_once drupal_get_path('module', 'update') . '/update.compare.inc' ;
 
     // Install the subtheme.
     \Drupal::service('theme_handler')->install(array('update_test_subtheme'));
diff -u b/core/modules/update/update.install b/core/modules/update/update.install
--- b/core/modules/update/update.install
+++ b/core/modules/update/update.install
@@ -31,7 +31,7 @@
   $requirements = array();
   if ($phase == 'runtime') {
     if ($available = update_get_available(FALSE)) {
-      include_once(drupal_get_path('module', 'update') . '/update.compare.inc');
+      include_once drupal_get_path('module', 'update') . '/update.compare.inc';
       $data = update_calculate_project_data($available);
       // First, populate the requirements for core:
       $requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');
diff -u b/core/modules/update/update.module b/core/modules/update/update.module
--- b/core/modules/update/update.module
+++ b/core/modules/update/update.module
@@ -230,7 +230,7 @@
   if ((REQUEST_TIME - $last_email_notice) > $interval) {
     // If configured time between notifications elapsed, send email about
     // updates possibly available.
-    include_once(drupal_get_path('module', 'update') . '/update.fetch.inc');
+    include_once drupal_get_path('module', 'update') . '/update.fetch.inc';
     _update_cron_notify();
   }
 
@@ -313,7 +313,7 @@
  * @see \Drupal\Update\UpdateManager::getProjects()
  */
 function update_get_available($refresh = FALSE) {
-  include_once(drupal_get_path('module', 'update') . '/update.compare.inc');
+  include_once drupal_get_path('module', 'update') . '/update.compare.inc';
   $needs_refresh = FALSE;
 
   // Grab whatever data we currently have.
diff -u b/core/modules/user/user.api.php b/core/modules/user/user.api.php
--- b/core/modules/user/user.api.php
+++ b/core/modules/user/user.api.php
@@ -40,7 +40,7 @@
   switch ($method) {
     case 'user_cancel_block_unpublish':
       // Unpublish nodes (current revisions).
-      include_once(drupal_get_path('module', 'node') . '/node.admin.inc');
+      include_once drupal_get_path('module', 'node') . '/node.admin.inc';
       $nodes = \Drupal::entityQuery('node')
         ->condition('uid', $account->id())
         ->execute();
@@ -49,7 +49,7 @@
 
     case 'user_cancel_reassign':
       // Anonymize nodes (current revisions).
-      include_once(drupal_get_path('module', 'node') . '/node.admin.inc');
+      include_once drupal_get_path('module', 'node') . '/node.admin.inc';
       $nodes = \Drupal::entityQuery('node')
         ->condition('uid', $account->id())
         ->execute();
diff -u b/core/modules/views/src/Plugin/views/wizard/WizardPluginBase.php b/core/modules/views/src/Plugin/views/wizard/WizardPluginBase.php
--- b/core/modules/views/src/Plugin/views/wizard/WizardPluginBase.php
+++ b/core/modules/views/src/Plugin/views/wizard/WizardPluginBase.php
@@ -588,7 +588,7 @@
    * available).
    */
   protected function buildFilters(&$form, FormStateInterface $form_state) {
-    include_once(drupal_get_path('module', 'views_ui') . '/admin.inc');
+    include_once drupal_get_path('module', 'views_ui') . '/admin.inc';
 
     $bundles = entity_get_bundles($this->entityTypeId);
     // If the current base table support bundles and has more than one (like user).
@@ -893,7 +893,7 @@
       // Figure out the table where $bundle_key lives. It may not be the same as
       // the base table for the view; the taxonomy vocabulary machine_name, for
       // example, is stored in taxonomy_vocabulary, not taxonomy_term_data.
-      include_once(drupal_get_path('module', 'views_ui') . '/admin.inc');
+      include_once drupal_get_path('module', 'views_ui') . '/admin.inc';
       $fields = Views::viewsDataHelper()->fetchFields($this->base_table, 'filter');
       if (isset($fields[$this->base_table . '.' . $bundle_key])) {
         $table = $this->base_table;
diff -u b/core/scripts/generate-d6-content.sh b/core/scripts/generate-d6-content.sh
--- b/core/scripts/generate-d6-content.sh
+++ b/core/scripts/generate-d6-content.sh
@@ -96,7 +96,7 @@
 
 $node_id = 0;
 $revision_id = 0;
-include_once(drupal_get_path('module', 'node') . '/node.pages.inc');
+include_once drupal_get_path('module', 'node') . '/node.pages.inc';
 for ($i = 0; $i < 24; $i++) {
   $uid = intval($i / 8) + 3;
   $user = user_load($uid);
diff -u b/core/scripts/generate-d7-content.sh b/core/scripts/generate-d7-content.sh
--- b/core/scripts/generate-d7-content.sh
+++ b/core/scripts/generate-d7-content.sh
@@ -158,7 +158,7 @@
 }
 $node_id = 0;
 $revision_id = 0;
-include_once(drupal_get_path('module', 'node') . '/node.pages.inc');
+include_once drupal_get_path('module', 'node') . '/node.pages.inc';
 for ($i = 0; $i < 36; $i++) {
   $uid = intval($i / 8) + 3;
   $user = user_load($uid);
only in patch2:
unchanged:
--- a/core/includes/update.inc
+++ b/core/includes/update.inc
@@ -235,7 +235,7 @@ function update_invoke_post_update($function, &$context) {
   }
 
   list($module, $name) = explode('_post_update_', $function, 2);
-  module_load_include('php', $module, $module . '.post_update');
+  include_once drupal_get_path('module', $module) . '/' . $module . '.post_update.php';
   if (function_exists($function)) {
     try {
       $ret['results']['query'] = $function($context['sandbox']);
only in patch2:
unchanged:
--- a/core/modules/locale/src/Tests/LocaleUpdateDevelopmentReleaseTest.php
+++ b/core/modules/locale/src/Tests/LocaleUpdateDevelopmentReleaseTest.php
@@ -20,7 +20,7 @@ class LocaleUpdateDevelopmentReleaseTest extends WebTestBase {
 
   protected function setUp() {
     parent::setUp();
-    module_load_include('compare.inc', 'locale');
+    include_once drupal_get_path('module', 'locale') . '/locale.compare.inc';
     $admin_user = $this->drupalCreateUser(array('administer modules', 'administer languages', 'access administration pages', 'translate interface'));
     $this->drupalLogin($admin_user);
     $this->drupalPostForm('admin/config/regional/language/add', array('predefined_langcode' => 'hu'), t('Add language'));
only in patch2:
unchanged:
--- a/core/modules/system/src/Tests/Update/DbUpdatesTrait.php
+++ b/core/modules/system/src/Tests/Update/DbUpdatesTrait.php
@@ -53,7 +53,7 @@ protected function applyUpdates() {
    */
   public static function includeUpdates($module, $group) {
     if ($index = \Drupal::state()->get($module . '.db_updates.' . $group)) {
-      module_load_include('inc', $module, 'update/' . $group . '_' . $index);
+      include_once drupal_get_path('module', $module) . '/update/' . $group . '_' . $index . '.inc';
     }
   }