diff --git a/src/Symfony/Component/Console/Input/ArgvInput.php b/src/Symfony/Component/Console/Input/ArgvInput.php
index ee0bd2c128..e294d25a0e 100644
--- a/src/Symfony/Component/Console/Input/ArgvInput.php
+++ b/src/Symfony/Component/Console/Input/ArgvInput.php
@@ -284,6 +284,14 @@ class ArgvInput extends Input
                 if ($token === $value || 0 === strpos($token, $value.'=')) {
                     return true;
                 }
+
+                if (0 === strpos($token, '-') && 0 !== strpos($token, '--')) {
+                    $searchableToken = str_replace('-', '', $token);
+                    $searchableValue = str_replace('-', '', $value);
+                    if ('' !== $searchableToken && '' !== $searchableValue && false !== strpos($searchableToken, $searchableValue)) {
+                        return true;
+                    }
+                }
             }
         }
 
diff --git a/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php b/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
index 1fe21d0f6c..85fb533715 100644
--- a/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
+++ b/src/Symfony/Component/Console/Tests/Input/ArgvInputTest.php
@@ -296,6 +296,9 @@ class ArgvInputTest extends TestCase
         $input = new ArgvInput(array('cli.php', '-f', 'foo'));
         $this->assertTrue($input->hasParameterOption('-f'), '->hasParameterOption() returns true if the given short option is in the raw input');
 
+        $input = new ArgvInput(array('cli.php', '-fh'));
+        $this->assertTrue($input->hasParameterOption('-fh'), '->hasParameterOption() returns true if the given short option is in the raw input');
+
         $input = new ArgvInput(array('cli.php', '--foo', 'foo'));
         $this->assertTrue($input->hasParameterOption('--foo'), '->hasParameterOption() returns true if the given short option is in the raw input');
 
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FileType.php b/src/Symfony/Component/Form/Extension/Core/Type/FileType.php
index 9df594a52f..9a4ab5eea7 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FileType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FileType.php
@@ -92,9 +92,12 @@ class FileType extends AbstractType
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $dataClass = function (Options $options) {
-            return $options['multiple'] ? null : 'Symfony\Component\HttpFoundation\File\File';
-        };
+        $dataClass = null;
+        if (class_exists('Symfony\Component\HttpFoundation\File\File')) {
+            $dataClass = function (Options $options) {
+                return $options['multiple'] ? null : 'Symfony\Component\HttpFoundation\File\File';
+            };
+        }
 
         $emptyData = function (Options $options) {
             return $options['multiple'] ? array() : null;
diff --git a/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php b/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
index 59ba309005..0ed6600974 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Flash/AutoExpireFlashBag.php
@@ -106,7 +106,7 @@ class AutoExpireFlashBag implements FlashBagInterface
     public function all()
     {
         $return = $this->flashes['display'];
-        $this->flashes = array('new' => array(), 'display' => array());
+        $this->flashes['display'] = array();
 
         return $return;
     }
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
index 18b71a5021..0e0724a324 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Flash/AutoExpireFlashBagTest.php
@@ -150,4 +150,12 @@ class AutoExpireFlashBagTest extends TestCase
     {
         $this->assertEquals(array('notice' => array('A previous flash message')), $this->bag->clear());
     }
+
+    public function testDoNotRemoveTheNewFlashesWhenDisplayingTheExistingOnes()
+    {
+        $this->bag->add('success', 'Something');
+        $this->bag->all();
+
+        $this->assertEquals(array('new' => array('success' => array('Something')), 'display' => array()), $this->array);
+    }
 }
diff --git a/src/Symfony/Component/Yaml/Inline.php b/src/Symfony/Component/Yaml/Inline.php
index a10c0e4194..a4367fb1eb 100644
--- a/src/Symfony/Component/Yaml/Inline.php
+++ b/src/Symfony/Component/Yaml/Inline.php
@@ -375,6 +375,7 @@ class Inline
         $output = array();
         $len = strlen($mapping);
         ++$i;
+        $allowOverwrite = false;
 
         // {foo: bar, bar:foo, ...}
         while ($i < $len) {
@@ -394,6 +395,10 @@ class Inline
             // key
             $key = self::parseScalar($mapping, array(':', ' '), array('"', "'"), $i, false);
 
+            if ('<<' === $key) {
+                $allowOverwrite = true;
+            }
+
             // value
             $done = false;
 
@@ -405,7 +410,12 @@ class Inline
                         // Spec: Keys MUST be unique; first one wins.
                         // Parser cannot abort this mapping earlier, since lines
                         // are processed sequentially.
-                        if (!isset($output[$key])) {
+                        // But overwriting is allowed when a merge node is used in current block.
+                        if ('<<' === $key) {
+                            foreach ($value as $parsedValue) {
+                                $output += $parsedValue;
+                            }
+                        } elseif ($allowOverwrite || !isset($output[$key])) {
                             $output[$key] = $value;
                         }
                         $done = true;
@@ -416,7 +426,10 @@ class Inline
                         // Spec: Keys MUST be unique; first one wins.
                         // Parser cannot abort this mapping earlier, since lines
                         // are processed sequentially.
-                        if (!isset($output[$key])) {
+                        // But overwriting is allowed when a merge node is used in current block.
+                        if ('<<' === $key) {
+                            $output += $value;
+                        } elseif ($allowOverwrite || !isset($output[$key])) {
                             $output[$key] = $value;
                         }
                         $done = true;
@@ -429,7 +442,10 @@ class Inline
                         // Spec: Keys MUST be unique; first one wins.
                         // Parser cannot abort this mapping earlier, since lines
                         // are processed sequentially.
-                        if (!isset($output[$key])) {
+                        // But overwriting is allowed when a merge node is used in current block.
+                        if ('<<' === $key) {
+                            $output += $value;
+                        } elseif ($allowOverwrite || !isset($output[$key])) {
                             $output[$key] = $value;
                         }
                         $done = true;
diff --git a/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml b/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml
index 59f6125141..499446c10c 100644
--- a/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml
+++ b/src/Symfony/Component/Yaml/Tests/Fixtures/sfMergeKey.yml
@@ -22,6 +22,7 @@ yaml: |
             foo: bar
             foo: ignore
             bar: foo
+    bar_inline: {a: before, d: other, <<: *foo, b: new, x: Oren, c: { foo: bar, foo: ignore, bar: foo}}
     duplicate:
         foo: bar
         foo: ignore
@@ -46,15 +47,20 @@ yaml: |
             p: 12345
         z:
             <<: *nestedref
+    head_inline: &head_inline { <<: [ *foo , *dong , *foo2 ] }
+    recursive_inline: { <<: *head_inline, c: { <<: *foo2 } }
 php: |
     array(
         'foo' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull'),
         'bar' => array('a' => 'before', 'd' => 'other', 'e' => null, 'b' => 'new', 'c' => array('foo' => 'bar', 'bar' => 'foo'), 'x' => 'Oren'),
+        'bar_inline' => array('a' => 'before', 'd' => 'other', 'b' => 'new', 'c' => array('foo' => 'bar', 'bar' => 'foo'), 'e' => 'notnull', 'x' => 'Oren'),
         'duplicate' => array('foo' => 'bar'),
         'foo2' => array('a' => 'Ballmer'),
         'ding' => array('fi', 'fei', 'fo', 'fam'),
         'check' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam', 'isit' => 'tested'),
         'head' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'),
         'taz' => array('a' => 'Steve', 'w' => array('p' => 1234)),
-        'nested' => array('a' => 'Steve', 'w' => array('p' => 12345), 'd' => 'Doug', 'z' => array('p' => 12345))
+        'nested' => array('a' => 'Steve', 'w' => array('p' => 12345), 'd' => 'Doug', 'z' => array('p' => 12345)),
+        'head_inline' => array('a' => 'Steve', 'b' => 'Clark', 'c' => 'Brian', 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'),
+        'recursive_inline' => array('a' => 'Steve', 'b' => 'Clark', 'c' => array('a' => 'Ballmer'), 'e' => 'notnull', 'fi', 'fei', 'fo', 'fam'),
     )
diff --git a/src/Symfony/Component/Yaml/Tests/ParserTest.php b/src/Symfony/Component/Yaml/Tests/ParserTest.php
index 9cafc92ac7..c990423a69 100644
--- a/src/Symfony/Component/Yaml/Tests/ParserTest.php
+++ b/src/Symfony/Component/Yaml/Tests/ParserTest.php
@@ -1280,6 +1280,18 @@ YAML;
 
         $this->assertSame($expected, $this->parser->parse($yaml));
     }
+
+    /**
+     * @expectedException \Symfony\Component\Yaml\Exception\ParseException
+     * @expectedExceptionMessage Reference "foo" does not exist
+     */
+    public function testEvalRefException()
+    {
+        $yaml = <<<EOE
+foo: { &foo { a: Steve, <<: *foo} }
+EOE;
+        $this->parser->parse($yaml);
+    }
 }
 
 class B