Issue #3335623: hook_help function missing in .module file

codesnippet.module

@@ -6,7 +6,27 @@
  */
 
 use Drupal\editor\Entity\Editor;
+use Drupal\Core\Routing\RouteMatchInterface;
 
+/**
+ * Implements hook_help().
+ */
+function codesnippet_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    // Main module help for the codesnippet module.
+    case 'help.page.codesnippet':
+      $output = '';
+      $output .= '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('This module enables the CodeSnippet plugin from CKEditor.com in your WYSIWYG.
+      It includes the highlightjs library and all available styles for it. If you have ever wanted to
+      drop code examples in your Drupal content and have it highlighted in a pretty format, this is
+      for you. This project is available for Drupal 7 as WYSIWYG CodeSnippet. Since that project
+      relies on WYSIWYG module, and this one only requires D8 core, it made sense to rename it.') . '</p>';
+      return $output;
+
+    default:
+  }
+}
 /**
  * Implements hook_ckeditor_css_alter().
  *

[Alberto Paderno]

It should be all the available styles for it.

[Alberto Paderno]

this is the module for you is probably better.

[Alberto Paderno]

I am not sure the note about renaming the module is relevant for using the module.

Actually, not even the part about the Drupal 7 module seems relevant, for a site running of Drupal 8 or higher versions.

[Alberto Paderno]

There is no need to add the default case without code.