diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index b25d28c..325c8e9 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1907,7 +1907,7 @@ function install_check_translations($langcode, $server_pattern) {
       'title'       => t('Internet'),
       'value'       => t('The translation server is offline.'),
       'severity'    => REQUIREMENT_ERROR,
-      'description' => t('The installer requires to contact the translation server to download a translation file. Check your internet connection and verify that your website can reach the translation server at <a href="!server_url">!server_url</a>.', array('!server_url' => $server_url)),
+      'description' => t('The installer requires to contact the translation server to download a translation file. Check your internet connection and verify that your website can reach the translation server at <a href=":server_url">!server_url</a>.', array(':server_url' => $server_url, '!server_url' => $server_url)),
     );
   }
   else {
diff --git a/core/modules/block_content/src/Controller/BlockContentController.php b/core/modules/block_content/src/Controller/BlockContentController.php
index f712367..4d65362 100644
--- a/core/modules/block_content/src/Controller/BlockContentController.php
+++ b/core/modules/block_content/src/Controller/BlockContentController.php
@@ -86,8 +86,8 @@ public function add(Request $request) {
     }
     if (count($types) === 0) {
       return array(
-        '#markup' => $this->t('You have not created any block types yet. Go to the <a href="!url">block type creation page</a> to add a new block type.', [
-          '!url' => Url::fromRoute('block_content.type_add')->toString(),
+        '#markup' => $this->t('You have not created any block types yet. Go to the <a href=":url">block type creation page</a> to add a new block type.', [
+          ':url' => Url::fromRoute('block_content.type_add')->toString(),
         ]),
       );
     }
diff --git a/core/modules/block_content/src/Plugin/Block/BlockContentBlock.php b/core/modules/block_content/src/Plugin/Block/BlockContentBlock.php
index b4596f1..a56df48 100644
--- a/core/modules/block_content/src/Plugin/Block/BlockContentBlock.php
+++ b/core/modules/block_content/src/Plugin/Block/BlockContentBlock.php
@@ -156,9 +156,9 @@ public function build() {
     }
     else {
       return array(
-        '#markup' => $this->t('Block with uuid %uuid does not exist. <a href="!url">Add custom block</a>.', array(
+        '#markup' => $this->t('Block with uuid %uuid does not exist. <a href=":url">Add custom block</a>.', array(
           '%uuid' => $this->getDerivativeId(),
-          '!url' => $this->urlGenerator->generate('block_content.add_page')
+          ':url' => $this->urlGenerator->generate('block_content.add_page')
         )),
         '#access' => $this->account->hasPermission('administer blocks')
       );
diff --git a/core/modules/block_content/src/Plugin/views/area/ListingEmpty.php b/core/modules/block_content/src/Plugin/views/area/ListingEmpty.php
index 0e25190..d5d9faa 100644
--- a/core/modules/block_content/src/Plugin/views/area/ListingEmpty.php
+++ b/core/modules/block_content/src/Plugin/views/area/ListingEmpty.php
@@ -78,7 +78,7 @@ public function render($empty = FALSE) {
       /** @var \Drupal\Core\Access\AccessResultInterface|\Drupal\Core\Cache\CacheableDependencyInterface $access_result */
       $access_result = $this->accessManager->checkNamedRoute('block_content.add_page', array(), $this->currentUser, TRUE);
       $element = array(
-        '#markup' => $this->t('Add a <a href="!url">custom block</a>.', array('!url' => Url::fromRoute('block_content.add_page')->toString())),
+        '#markup' => $this->t('Add a <a href=":url">custom block</a>.', array(':url' => Url::fromRoute('block_content.add_page')->toString())),
         '#access' => $access_result->isAllowed(),
         '#cache' => [
           'contexts' => $access_result->getCacheContexts(),
diff --git a/core/modules/content_translation/content_translation.install b/core/modules/content_translation/content_translation.install
index a8d4c49..6565a2b 100644
--- a/core/modules/content_translation/content_translation.install
+++ b/core/modules/content_translation/content_translation.install
@@ -23,12 +23,12 @@ function content_translation_install() {
 function content_translation_enable() {
   // Translation works when at least two languages are added.
   if (count(\Drupal::languageManager()->getLanguages()) < 2) {
-    $t_args = array('!language_url' => \Drupal::url('entity.configurable_language.collection'));
-    $message = t('Be sure to <a href="!language_url">add at least two languages</a> to translate content.', $t_args);
+    $t_args = array(':language_url' => \Drupal::url('entity.configurable_language.collection'));
+    $message = t('Be sure to <a href=":language_url">add at least two languages</a> to translate content.', $t_args);
     drupal_set_message($message, 'warning');
   }
   // Point the user to the content translation settings.
-  $t_args = array('!settings_url' => \Drupal::url('language.content_settings_page'));
-  $message = t('<a href="!settings_url">Enable translation</a> for <em>content types</em>, <em>taxonomy vocabularies</em>, <em>accounts</em>, or any other element you wish to translate.', $t_args);
+  $t_args = array(':settings_url' => \Drupal::url('language.content_settings_page'));
+  $message = t('<a href=":settings_url">Enable translation</a> for <em>content types</em>, <em>taxonomy vocabularies</em>, <em>accounts</em>, or any other element you wish to translate.', $t_args);
   drupal_set_message($message, 'warning');
 }
diff --git a/core/modules/image/src/ImageStyleListBuilder.php b/core/modules/image/src/ImageStyleListBuilder.php
index eb5cf32..b55a2fd 100644
--- a/core/modules/image/src/ImageStyleListBuilder.php
+++ b/core/modules/image/src/ImageStyleListBuilder.php
@@ -91,8 +91,8 @@ public function getDefaultOperations(EntityInterface $entity) {
    */
   public function render() {
     $build = parent::render();
-    $build['#empty'] = $this->t('There are currently no styles. <a href="!url">Add a new one</a>.', array(
-      '!url' => $this->urlGenerator->generateFromRoute('image.style_add'),
+    $build['#empty'] = $this->t('There are currently no styles. <a href=":url">Add a new one</a>.', array(
+      ':url' => $this->urlGenerator->generateFromRoute('image.style_add'),
     ));
     return $build;
   }
diff --git a/core/modules/user/src/AccountForm.php b/core/modules/user/src/AccountForm.php
index f6feb2e..f1c505d 100644
--- a/core/modules/user/src/AccountForm.php
+++ b/core/modules/user/src/AccountForm.php
@@ -151,10 +151,10 @@ public function form(array $form, FormStateInterface $form_state) {
         // The user may only change their own password without their current
         // password if they logged in via a one-time login link.
         if (!$form_state->get('user_pass_reset')) {
-          $form['account']['current_pass']['#description'] = $this->t('Required if you want to change the %mail or %pass below. <a href="!request_new_url" title="Send password reset instructions via e-mail.">Reset your password</a>.', array(
+          $form['account']['current_pass']['#description'] = $this->t('Required if you want to change the %mail or %pass below. <a href=":request_new_url" title="Send password reset instructions via e-mail.">Reset your password</a>.', array(
             '%mail' => $form['account']['mail']['#title'],
             '%pass' => $this->t('Password'),
-            '!request_new_url' => $this->url('user.pass'),
+            ':request_new_url' => $this->url('user.pass'),
           ));
         }
       }
diff --git a/core/modules/responsive_image/src/ResponsiveImageStyleForm.php b/core/modules/responsive_image/src/ResponsiveImageStyleForm.php
index 3badae1..301004e 100644
--- a/core/modules/responsive_image/src/ResponsiveImageStyleForm.php
+++ b/core/modules/responsive_image/src/ResponsiveImageStyleForm.php
@@ -118,7 +118,7 @@ public function form(array $form, FormStateInterface $form_state) {
         );
         $image_style_mapping = $responsive_image_style->getImageStyleMapping($breakpoint_id, $multiplier);
         if (\Drupal::moduleHandler()->moduleExists('help')) {
-          $description = $this->t('See the <a href="!responsive_image_help">Responsive Image help page</a> for information on the sizes attribute.', array('!responsive_image_help' => (\Drupal::url('help.page', array('name' => 'responsive_image')))));
+          $description = $this->t('See the <a href=":responsive_image_help">Responsive Image help page</a> for information on the sizes attribute.', array(':responsive_image_help' => (\Drupal::url('help.page', array('name' => 'responsive_image')))));
         }
         else {
           $description = $this->t('Enable the Help module for more information on the sizes attribute.');
diff --git a/core/modules/system/src/Form/CronForm.php b/core/modules/system/src/Form/CronForm.php
index 85b3c1a..8a5ad37 100644
--- a/core/modules/system/src/Form/CronForm.php
+++ b/core/modules/system/src/Form/CronForm.php
@@ -107,7 +107,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
     );

     $form['cron_url'] = array(
-      '#markup' => '<p>' . t('To run cron from outside the site, go to <a href="!cron">!cron</a>', array('!cron' => $this->url('system.cron', array('key' => $this->state->get('system.cron_key')), array('absolute' => TRUE)))) . '</p>',
+      '#markup' => '<p>' . t('To run cron from outside the site, go to <a href=":cron">!cron</a>', array(':cron' => $this->url('system.cron', array('key' => $this->state->get('system.cron_key')), array('absolute' => TRUE)))) . '</p>',
     );

     $form['cron'] = array(
diff --git a/core/modules/system/src/Form/PerformanceForm.php b/core/modules/system/src/Form/PerformanceForm.php
index 542d691..4d28ac7 100644
--- a/core/modules/system/src/Form/PerformanceForm.php
+++ b/core/modules/system/src/Form/PerformanceForm.php
@@ -141,7 +141,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
     $disabled = !$is_writable;
     $disabled_message = '';
     if (!$is_writable) {
-      $disabled_message = ' ' . t('<strong class="error">Set up the <a href="!file-system">public files directory</a> to make these optimizations available.</strong>', array('!file-system' => $this->url('system.file_system_settings')));
+      $disabled_message = ' ' . t('<strong class="error">Set up the <a href=":file-system">public files directory</a> to make these optimizations available.</strong>', array(':file-system' => $this->url('system.file_system_settings')));
     }

     $form['bandwidth_optimization'] = array(