diff --git a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
index cd00f44d57b00..d9a6cccc41d9b 100644
--- a/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
+++ b/src/Symfony/Bridge/Twig/Extension/CodeExtension.php
@@ -23,21 +23,19 @@
 class CodeExtension extends AbstractExtension
 {
     private $fileLinkFormat;
-    private $rootDir;
     private $charset;
     private $projectDir;
 
     /**
      * @param string|FileLinkFormatter $fileLinkFormat The format for links to source files
-     * @param string                   $rootDir        The project root directory
+     * @param string                   $projectDir     The project directory
      * @param string                   $charset        The charset
      */
-    public function __construct($fileLinkFormat, string $rootDir, string $charset, string $projectDir = null)
+    public function __construct($fileLinkFormat, string $projectDir, string $charset)
     {
         $this->fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
-        $this->rootDir = str_replace('/', \DIRECTORY_SEPARATOR, \dirname($rootDir)).\DIRECTORY_SEPARATOR;
+        $this->projectDir = str_replace('\\', '/', $projectDir).'/';
         $this->charset = $charset;
-        $this->projectDir = $projectDir;
     }
 
     /**
@@ -176,11 +174,10 @@ public function formatFile($file, $line, $text = null)
         $file = trim($file);
 
         if (null === $text) {
-            $text = str_replace('/', \DIRECTORY_SEPARATOR, $file);
-            if (0 === strpos($text, $this->rootDir)) {
-                $text = substr($text, \strlen($this->rootDir));
-                $text = explode(\DIRECTORY_SEPARATOR, $text, 2);
-                $text = sprintf('<abbr title="%s%2$s">%s</abbr>%s', $this->rootDir, $text[0], isset($text[1]) ? \DIRECTORY_SEPARATOR.$text[1] : '');
+            $text = $file;
+            if (null !== $rel = $this->getFileRelative($text)) {
+                $rel = explode('/', $rel, 2);
+                $text = sprintf('<abbr title="%s%2$s">%s</abbr>%s', $this->projectDir, $rel[0], '/'.($rel[1] ?? ''));
             }
         }
 
@@ -214,8 +211,10 @@ public function getFileLink($file, $line)
 
     public function getFileRelative(string $file): ?string
     {
+        $file = str_replace('\\', '/', $file);
+
         if (null !== $this->projectDir && 0 === strpos($file, $this->projectDir)) {
-            return ltrim(substr($file, \strlen($this->projectDir)), \DIRECTORY_SEPARATOR);
+            return ltrim(substr($file, \strlen($this->projectDir)), '/');
         }
 
         return null;
diff --git a/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php b/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php
index c152ba6d60137..2e95fe5845fb7 100644
--- a/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Extension/CodeExtensionTest.php
@@ -25,7 +25,7 @@ public function testFormatFile()
 
     public function testFileRelative()
     {
-        $this->assertEquals('CodeExtensionTest.php', $this->getExtension()->getFileRelative(__FILE__));
+        $this->assertEquals('file.txt', $this->getExtension()->getFileRelative(\DIRECTORY_SEPARATOR.'project'.\DIRECTORY_SEPARATOR.'file.txt'));
     }
 
     /**
@@ -69,6 +69,6 @@ public function testGetName()
 
     protected function getExtension()
     {
-        return new CodeExtension(new FileLinkFormatter('proto://%f#&line=%l&'.substr(__FILE__, 0, 5).'>foobar'), '/root', 'UTF-8', __DIR__);
+        return new CodeExtension(new FileLinkFormatter('proto://%f#&line=%l&'.substr(__FILE__, 0, 5).'>foobar'), \DIRECTORY_SEPARATOR.'project', 'UTF-8');
     }
 }
diff --git a/src/Symfony/Bundle/TwigBundle/Resources/config/twig.xml b/src/Symfony/Bundle/TwigBundle/Resources/config/twig.xml
index 02175bc16da0c..8e29ae28d5c94 100644
--- a/src/Symfony/Bundle/TwigBundle/Resources/config/twig.xml
+++ b/src/Symfony/Bundle/TwigBundle/Resources/config/twig.xml
@@ -84,9 +84,8 @@
         <service id="twig.extension.code" class="Symfony\Bridge\Twig\Extension\CodeExtension">
             <tag name="twig.extension" />
             <argument type="service" id="debug.file_link_formatter" on-invalid="ignore" />
-            <argument>%kernel.root_dir%</argument>
-            <argument>%kernel.charset%</argument>
             <argument>%kernel.project_dir%</argument>
+            <argument>%kernel.charset%</argument>
         </service>
 
         <service id="twig.extension.routing" class="Symfony\Bridge\Twig\Extension\RoutingExtension">
diff --git a/src/Symfony/Bundle/TwigBundle/composer.json b/src/Symfony/Bundle/TwigBundle/composer.json
index 2ff3a8ea9ee3a..d9526cf7d5411 100644
--- a/src/Symfony/Bundle/TwigBundle/composer.json
+++ b/src/Symfony/Bundle/TwigBundle/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": "^7.1.3",
         "symfony/config": "~4.2",
-        "symfony/twig-bridge": "^3.4.3|^4.0.3",
+        "symfony/twig-bridge": "^4.2",
         "symfony/http-foundation": "~4.1",
         "symfony/http-kernel": "~4.1",
         "symfony/polyfill-ctype": "~1.8",
@@ -33,6 +33,7 @@
         "symfony/form": "~3.4|~4.0",
         "symfony/routing": "~3.4|~4.0",
         "symfony/templating": "~3.4|~4.0",
+        "symfony/translation": "^4.2",
         "symfony/yaml": "~3.4|~4.0",
         "symfony/framework-bundle": "~4.1",
         "symfony/web-link": "~3.4|~4.0",