Merge branch '3.1' into 3.2

* 3.1:
  [appveyor] Update phpunit-bridge cache-id
  handle empty lines inside unindented collection

phpunit

@@ -1,7 +1,7 @@
 #!/usr/bin/env php
 <?php
 
-// Cache-Id: https://github.com/symfony/phpunit-bridge/commit/89cd0aab376105fb34e773e3dff641f68e3f9645
+// Cache-Id: https://github.com/symfony/phpunit-bridge/commit/a9037a65be5eeeb41f5693c0b4371aff821399f4
 
 if (!file_exists(__DIR__.'/vendor/symfony/phpunit-bridge/bin/simple-phpunit')) {
     echo "Unable to find the `simple-phpunit` script in `vendor/symfony/phpunit-bridge/bin/`.\nPlease run `composer update` before running this command.\n";

src/Symfony/Component/Yaml/Parser.php

@@ -462,7 +462,7 @@ class Parser
 
             $previousLineIndentation = $indent;
 
-            if ($isItUnindentedCollection && !$this->isStringUnIndentedCollectionItem() && $newIndent === $indent) {
+            if ($isItUnindentedCollection && !$this->isCurrentLineEmpty() && !$this->isStringUnIndentedCollectionItem() && $newIndent === $indent) {
                 $this->moveToPreviousLine();
                 break;
             }

src/Symfony/Component/Yaml/Tests/ParserTest.php

@@ -210,6 +210,22 @@ EOF;
         );
         $tests['Literal block chomping clip with multiple trailing newlines'] = array($expected, $yaml);
 
+        $yaml = <<<'EOF'
+foo:
+- bar: |
+    one
+
+    two
+EOF;
+        $expected = array(
+            'foo' => array(
+                array(
+                    'bar' => "one\n\ntwo",
+                ),
+            ),
+        );
+        $tests['Literal block chomping clip with embedded blank line inside unindented collection'] = array($expected, $yaml);
+
         $yaml = <<<'EOF'
 foo: |
     one