diff --git a/.gitignore b/.gitignore
index 422f1ce840..83ef63d16b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 phpunit.xml
+composer.lock
 autoload.php
 /vendor/
diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php
index 6ad960bff1..2debb97e25 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityChoiceList.php
@@ -175,6 +175,9 @@ class EntityChoiceList extends ObjectChoiceList
             // Optimize performance in case we have an entity loader and
             // a single-field identifier
             if (count($this->identifier) === 1 && $this->entityLoader) {
+                if (empty($values)) {
+                    return array();
+                }
                 return $this->entityLoader->getEntitiesByIds(current($this->identifier), $values);
             }
 
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/EntityChoiceListTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/EntityChoiceListTest.php
index e0bc7f6763..97867e7591 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/EntityChoiceListTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/ChoiceList/EntityChoiceListTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Bridge\Doctrine\Tests\Form\ChoiceList;
 
+use Symfony\Bridge\Doctrine\Form\ChoiceList\ORMQueryBuilderLoader;
 use Symfony\Bridge\Doctrine\Tests\DoctrineOrmTestCase;
 use Symfony\Bridge\Doctrine\Tests\Fixtures\ItemGroupEntity;
 use Symfony\Bridge\Doctrine\Tests\Fixtures\SingleIdentEntity;
@@ -250,4 +251,19 @@ class EntityChoiceListTest extends DoctrineOrmTestCase
         $this->assertEquals(array(1, 2), $choiceList->getValuesForChoices(array($item1, $item2)));
         $this->assertEquals(array(1, 2), $choiceList->getIndicesForChoices(array($item1, $item2)));
     }
+    
+    // Ticket #3446
+    public function testGetEmptyArrayChoicesForEmptyValues()
+    {
+        $qb = $this->em->createQueryBuilder()->select('s')->from(self::SINGLE_IDENT_CLASS, 's');
+        $entityLoader = new ORMQueryBuilderLoader($qb);
+        $choiceList = new EntityChoiceList(
+            $this->em,
+            self::SINGLE_IDENT_CLASS,
+            null,
+            $entityLoader
+        );
+        
+        $this->assertEquals(array(), $choiceList->getChoicesForValues(array()));
+    }
 }
diff --git a/src/Symfony/Bridge/Propel1/README.md b/src/Symfony/Bridge/Propel1/README.md
index d281c2a21d..f3ca773557 100644
--- a/src/Symfony/Bridge/Propel1/README.md
+++ b/src/Symfony/Bridge/Propel1/README.md
@@ -15,6 +15,6 @@ Components, declare the following environment variables before running
 PHPUnit:
 
     export PROPEL1=../path/to/Propel
-    export HTTP_FOUNDATION=../path/to/HttpFoundation
-    export HTTP_KERNEL=../path/to/HttpKernel
-    export HTTP_FORM=../path/to/Form
+    export SYMFONY_HTTP_FOUNDATION=../path/to/HttpFoundation
+    export SYMFONY_HTTP_KERNEL=../path/to/HttpKernel
+    export SYMFONY_FORM=../path/to/Form
diff --git a/src/Symfony/Bridge/Twig/README.md b/src/Symfony/Bridge/Twig/README.md
index 0fac6c5bcd..a2ed06829a 100644
--- a/src/Symfony/Bridge/Twig/README.md
+++ b/src/Symfony/Bridge/Twig/README.md
@@ -15,8 +15,8 @@ If you also want to run the unit tests that depend on other Symfony
 Components, declare the following environment variables before running
 PHPUnit:
 
-    export HTTP_TWIG=../path/to/Twig
-    export HTTP_FORM=../path/to/Form
-    export HTTP_TRANSLATION=../path/to/Translation
-    export HTTP_EVENT_DISPATCHER=../path/to/EventDispatcher
-    export HTTP_LOCALE=../path/to/Locale
+    export TWIG=../path/to/Twig
+    export SYMFONY_FORM=../path/to/Form
+    export SYMFONY_TRANSLATION=../path/to/Translation
+    export SYMFONY_EVENT_DISPATCHER=../path/to/EventDispatcher
+    export SYMFONY_LOCALE=../path/to/Locale
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services6.yml b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services6.yml
index 429aa9f679..eaa52bda62 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services6.yml
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/yaml/services6.yml
@@ -14,6 +14,7 @@ services:
         class: FooClass
         calls:
             - [ setBar, [] ]
+            - [ setBar ]
     method_call2:
         class: FooClass
         calls:
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
index c094c2126c..ec20ec617d 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
@@ -26,7 +26,9 @@ class CollectionType extends AbstractType
     public function buildForm(FormBuilder $builder, array $options)
     {
         if ($options['allow_add'] && $options['prototype']) {
-            $prototype = $builder->create($options['prototype_name'], $options['type'], $options['options']);
+            $prototype = $builder->create($options['prototype_name'], $options['type'], array_replace(array(
+                'label' => $options['prototype_name'] . 'label__',
+            ), $options['options']));
             $builder->setAttribute('prototype', $prototype->getForm());
         }
 
diff --git a/src/Symfony/Component/Form/Extension/Core/Type/FieldType.php b/src/Symfony/Component/Form/Extension/Core/Type/FieldType.php
index b51323bb09..d9bbe6222c 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/FieldType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/FieldType.php
@@ -200,6 +200,6 @@ class FieldType extends AbstractType
 
     private function humanize($text)
     {
-        return ucfirst(strtolower(str_replace('_', ' ', $text)));
+        return ucfirst(trim(strtolower(preg_replace('/[_\s]+/', ' ', $text))));
     }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
index b8f4b19858..b0bb62508f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
@@ -185,4 +185,16 @@ class CollectionTypeTest extends TypeTestCase
 
         $this->assertSame('__test__', $form->getAttribute('prototype')->getName());
     }
+
+    public function testPrototypeDefaultLabel()
+    {
+        $form = $this->factory->create('collection', array(), array(
+            'type'      => 'file',
+            'allow_add' => true,
+            'prototype' => true,
+            'prototype_name' => '__test__',
+        ));
+
+        $this->assertSame('__test__label__', $form->createView()->get('prototype')->get('label'));
+    }
 }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FieldTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FieldTypeTest.php
index 7b0aee4d3f..d1a547c8b7 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/FieldTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/FieldTypeTest.php
@@ -188,6 +188,22 @@ class FieldTypeTest extends TypeTestCase
         $this->assertSame('test', $view->get('translation_domain'));
     }
 
+    public function testPassDefaultLabelToView()
+    {
+        $form = $this->factory->createNamed('field', '__test___field');
+        $view = $form->createView();
+
+        $this->assertSame('Test field', $view->get('label'));
+    }
+
+    public function testPassLabelToView()
+    {
+        $form = $this->factory->createNamed('field', '__test___field', null, array('label' => 'My label'));
+        $view = $form->createView();
+
+        $this->assertSame('My label', $view->get('label'));
+    }
+
     public function testDefaultTranslationDomain()
     {
         $form = $this->factory->create('field');