Merge branch '3.1' into 3.2

* 3.1:
  add dependency on Twig
  [Config] Do not skip YamlReferenceDumperTest entirely
  [Config] Fix YamlReferenceDumper extra space

Author: fabpot

Definition/Dumper/YamlReferenceDumper.php

@@ -106,7 +106,7 @@ private function writeNode(NodeInterface $node, $depth = 0, $prototypedArray = f
         $comments = count($comments) ? '# '.implode(', ', $comments) : '';
 
         $key = $prototypedArray ? '-' : $node->getName().':';
-        $text = rtrim(sprintf('%-20s %s %s', $key, $default, $comments), ' ');
+        $text = rtrim(sprintf('%-21s%s %s', $key, $default, $comments), ' ');
 
         if ($info = $node->getInfo()) {
             $this->writeLine('');

Tests/Definition/Dumper/XmlReferenceDumperTest.php

@@ -49,6 +49,7 @@ private function getConfigurationAsString()
     scalar-array-empty=""
     scalar-array-defaults="elem1,elem2"
     scalar-required=""
+    node-with-a-looong-name=""
     enum-with-default="this"
     enum=""
 >

Tests/Definition/Dumper/YamlReferenceDumperTest.php

@@ -42,6 +42,7 @@ private function getConfigurationAsString()
         - elem1
         - elem2
     scalar_required:      ~ # Required
+    node_with_a_looong_name: ~
     enum_with_default:    this # One of "this"; "that"
     enum:                 ~ # One of "this"; "that"
 

Tests/Fixtures/Configuration/ExampleConfiguration.php

@@ -35,6 +35,7 @@ public function getConfigTreeBuilder()
                 ->scalarNode('scalar_array_empty')->defaultValue(array())->end()
                 ->scalarNode('scalar_array_defaults')->defaultValue(array('elem1', 'elem2'))->end()
                 ->scalarNode('scalar_required')->isRequired()->end()
+                ->scalarNode('node_with_a_looong_name')->end()
                 ->enumNode('enum_with_default')->values(array('this', 'that'))->defaultValue('this')->end()
                 ->enumNode('enum')->values(array('this', 'that'))->end()
                 ->arrayNode('array')