From 9104fd4539440c937163a0011d2c44a64bc8d8cc Mon Sep 17 00:00:00 2001
From: Nyholm <tobias.nyholm@gmail.com>
Date: Sat, 5 Dec 2020 17:39:56 +0100
Subject: [PATCH] [Config] YamlReferenceDumper: No default value required for
 VariableNode with array example

---
 .../Config/Definition/Dumper/YamlReferenceDumper.php          | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php b/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
index e19e09ca7c..7f98d35bcc 100644
--- a/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
+++ b/src/Symfony/Component/Config/Definition/Dumper/YamlReferenceDumper.php
@@ -17,6 +17,7 @@ use Symfony\Component\Config\Definition\EnumNode;
 use Symfony\Component\Config\Definition\NodeInterface;
 use Symfony\Component\Config\Definition\PrototypedArrayNode;
 use Symfony\Component\Config\Definition\ScalarNode;
+use Symfony\Component\Config\Definition\VariableNode;
 use Symfony\Component\Yaml\Inline;
 
 /**
@@ -95,6 +96,9 @@ class YamlReferenceDumper
         } elseif ($node instanceof EnumNode) {
             $comments[] = 'One of '.implode('; ', array_map('json_encode', $node->getValues()));
             $default = $node->hasDefaultValue() ? Inline::dump($node->getDefaultValue()) : '~';
+        } elseif (VariableNode::class === get_class($node) && \is_array($example)) {
+            // If there is an array example, we are sure we dont need to print a default value
+            $default = '';
         } else {
             $default = '~';