Merge branch '2.7' into 2.8

* 2.7:
  fixed typo
  Revert "fixed typo"
  fixed typo
  fixed CS
  Avoid setting request attributes from signature arguments in AnnotationClassLoader
  [DependencyInjection] Add some missing typehints in YamlFileLoader
  [DependencyInjection] minor: Fix a DocBlock
  [HttpKernel] Give higher priority to adding request formats
  [FrameworkBundle] Fix third level headers for MarkdownDescriptor
  [TwigBundle] do not lose already set method calls
  #20411 fix Yaml parsing for very long quoted strings
  CS: apply is_null
  DX: remove invalid inheritdoc
  bumped Symfony version to 2.7.24
  updated VERSION for 2.7.23
  update CONTRIBUTORS for 2.7.23
  updated CHANGELOG for 2.7.23
  [FrameworkBundle] Skip test if xdebug.file_link_format is defined.

Author: fabpot

Inline.php

@@ -21,7 +21,7 @@
  */
 class Inline
 {
-    const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\']*(?:\'\'[^\']*)*)\')';
+    const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
 
     private static $exceptionOnInvalidType = false;
     private static $objectSupport = false;

Tests/InlineTest.php

@@ -457,4 +457,14 @@ public function testNotSupportedMissingValue()
     {
         Inline::parse('{this, is not, supported}');
     }
+
+    public function testVeryLongQuotedStrings()
+    {
+        $longStringWithQuotes = str_repeat("x\r\n\\\"x\"x", 1000);
+
+        $yamlString = Inline::dump(array('longStringWithQuotes' => $longStringWithQuotes));
+        $arrayFromYaml = Inline::parse($yamlString);
+
+        $this->assertEquals($longStringWithQuotes, $arrayFromYaml['longStringWithQuotes']);
+    }
 }