Add custom Twig loader to remove last new line of a file

packages/guides/resources/config/guides.php

@@ -57,6 +57,7 @@
 use phpDocumentor\Guides\Twig\EnvironmentBuilder;
 use phpDocumentor\Guides\Twig\GlobalMenuExtension;
 use phpDocumentor\Guides\Twig\Theme\ThemeManager;
+use phpDocumentor\Guides\Twig\TrimFilesystemLoader;
 use phpDocumentor\Guides\Twig\TwigTemplateRenderer;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
 use Symfony\Component\DependencyInjection\Reference;
@@ -223,11 +224,12 @@
             param('phpdoc.guides.base_template_paths'),
         )
 
-        ->set(FilesystemLoader::class)
+        ->set(TrimFilesystemLoader::class)
         ->arg(
             '$paths',
             param('phpdoc.guides.base_template_paths'),
         )
+        ->alias(FilesystemLoader::class, TrimFilesystemLoader::class)
 
         ->set(LoadSettingsFromComposer::class)
         ->tag('event_listener', ['event' => PostProjectNodeCreated::class])

packages/guides/src/Twig/TrimFilesystemLoader.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link https://phpdoc.org
+ */
+
+namespace phpDocumentor\Guides\Twig;
+
+use Twig\Loader\FilesystemLoader;
+use Twig\Source;
+
+use function preg_replace;
+
+/**
+ * A file system loader that trims the last line ending from the template
+ * content.
+ */
+class TrimFilesystemLoader extends FilesystemLoader
+{
+    // phpcs:disable SlevomatCodingStandard.TypeHints.ParameterTypeHint.MissingNativeTypeHint
+
+    /** @param string $name */
+    public function getSourceContext($name): Source
+    {
+        // phpcs:enable
+        $source = parent::getSourceContext($name);
+
+        return new Source(
+            preg_replace('/\R$/', '', $source->getCode()) ?? $source->getCode(),
+            $source->getName(),
+            $source->getPath(),
+        );
+    }
+}