From 6b6c24c6187b5fe19b9c0aa230432a846d212081 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Deruss=C3=A9?= <jeremy@derusse.com>
Date: Sun, 7 Apr 2019 20:27:31 +0200
Subject: [PATCH] Allow env processor to resolve `::`

---
 .../ParameterBag/EnvPlaceholderParameterBag.php            | 2 +-
 .../Tests/ParameterBag/EnvPlaceholderParameterBagTest.php  | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php b/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
index 200351bf42..fe27324e54 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/EnvPlaceholderParameterBag.php
@@ -42,7 +42,7 @@ class EnvPlaceholderParameterBag extends ParameterBag
                     return $placeholder; // return first result
                 }
             }
-            if (!preg_match('/^(?:\w++:)*+\w++$/', $env)) {
+            if (!preg_match('/^(?:\w*+:)*+\w++$/', $env)) {
                 throw new InvalidArgumentException(sprintf('Invalid %s name: only "word" characters are allowed.', $name));
             }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php
index b245823f67..999303017c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/EnvPlaceholderParameterBagTest.php
@@ -194,4 +194,11 @@ class EnvPlaceholderParameterBagTest extends TestCase
         $bag->get('env(ARRAY_VAR)');
         $bag->resolve();
     }
+
+    public function testDefaultToNullAllowed()
+    {
+        $bag = new EnvPlaceholderParameterBag();
+        $bag->resolve();
+        $this->assertNotNull($bag->get('env(default::BAR)'));
+    }
 }