Merge pull request #2064 from usagov/USAGOV-2069-tome-slashes

Usagov 2069 tome slashes

web/modules/custom/usagov_ssg_postprocessing/src/EventSubscriber/TomeEventSubscriber.php

@@ -189,11 +189,13 @@ public function modifyHtml(ModifyHtmlEvent $event) {
   public function excludeInvalidPaths(PathPlaceholderEvent $event) {
     $path = $event->getPath();
 
-    if ($path === '/es/') {
-      // Tome should never request the spanish homepage with a trailing-slash.
-      // If it does request it, that is due to the path being linked in content.
-      // When tome runs, Drupal will redirect the request to `/es`, causing Tome
-      // to rewrite the contents of `es/index.html` with a refresh redirect.
+    if ($path !== '/' && str_ends_with($path, '/')) {
+      // Tome should never request the Spanish homepage or any other local path
+      // with a trailing-slash. If it does request it, that is because the path
+      // was found in the content of a node or term.
+      // For example, when tome runs and it finds a link to `/es/`, Drupal will
+      // redirect the request for `/es/` to `/es`. The response causes Tome to
+      // save it in  the contents of `es/index.html` with an refresh redirect.
       $event->setInvalid();
       return;
     }