diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index dc23d2ca1a..adc73d2b83 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -1391,10 +1391,10 @@ class Request
     public function getRequestFormat($default = 'html')
     {
         if (null === $this->format) {
-            $this->format = $this->attributes->get('_format', $default);
+            $this->format = $this->attributes->get('_format');
         }
 
-        return $this->format;
+        return null === $this->format ? $default : $this->format;
     }
 
     /**
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index b11409002a..a6efcaff44 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -1437,6 +1437,11 @@ class RequestTest extends TestCase
         $request = new Request();
         $this->assertEquals('html', $request->getRequestFormat());
 
+        // Ensure that setting different default values over time is possible,
+        // aka. setRequestFormat determines the state.
+        $this->assertEquals('json', $request->getRequestFormat('json'));
+        $this->assertEquals('html', $request->getRequestFormat('html'));
+
         $request = new Request();
         $this->assertNull($request->getRequestFormat(null));
 
diff --git a/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php b/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php
index 8d16b365e5..794d8e3365 100644
--- a/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php
+++ b/src/Symfony/Component/Intl/DateFormatter/DateFormat/TimeZoneTransformer.php
@@ -96,6 +96,6 @@ class TimeZoneTransformer extends Transformer
             return 'Etc/GMT'.($hours !== 0 ? $signal.$hours : '');
         }
 
-        throw new \InvalidArgumentException('The GMT time zone \'%s\' does not match with the supported formats GMT[+-]HH:MM or GMT[+-]HHMM.');
+        throw new \InvalidArgumentException(sprintf("The GMT time zone '%s' does not match with the supported formats GMT[+-]HH:MM or GMT[+-]HHMM.", $formattedTimeZone));
     }
 }
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
index 0e5f29ee17..504b4c3bc5 100644
--- a/src/Symfony/Component/Process/Process.php
+++ b/src/Symfony/Component/Process/Process.php
@@ -169,7 +169,6 @@ class Process implements \IteratorAggregate
         $this->setTimeout($timeout);
         $this->useFileHandles = '\\' === DIRECTORY_SEPARATOR;
         $this->pty = false;
-        $this->enhanceWindowsCompatibility = true;
         $this->enhanceSigchildCompatibility = '\\' !== DIRECTORY_SEPARATOR && $this->isSigchildEnabled();
         $this->options = array_replace(array('suppress_errors' => true, 'binary_pipes' => true), $options);
     }
diff --git a/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php b/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
index 71bdf6ca38..4479a5cae9 100644
--- a/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
+++ b/src/Symfony/Component/Security/Http/Firewall/DigestAuthenticationListener.php
@@ -205,7 +205,7 @@ class DigestData
         } elseif ('auth' === $this->elements['qop']) {
             $digest .= ':'.$this->elements['nc'].':'.$this->elements['cnonce'].':'.$this->elements['qop'];
         } else {
-            throw new \InvalidArgumentException('This method does not support a qop: "%s".', $this->elements['qop']);
+            throw new \InvalidArgumentException(sprintf('This method does not support a qop: "%s".', $this->elements['qop']));
         }
         $digest .= ':'.$a2Md5;
 
diff --git a/src/Symfony/Component/Security/Tests/Http/Firewall/UsernamePasswordFormAuthenticationListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordFormAuthenticationListenerTest.php
similarity index 100%
rename from src/Symfony/Component/Security/Tests/Http/Firewall/UsernamePasswordFormAuthenticationListenerTest.php
rename to src/Symfony/Component/Security/Http/Tests/Firewall/UsernamePasswordFormAuthenticationListenerTest.php
diff --git a/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php b/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
index 8ea921aa4e..bb501c14a4 100644
--- a/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
+++ b/src/Symfony/Component/Translation/Catalogue/AbstractOperation.php
@@ -85,7 +85,6 @@ abstract class AbstractOperation implements OperationInterface
         $this->source = $source;
         $this->target = $target;
         $this->result = new MessageCatalogue($source->getLocale());
-        $this->domains = null;
         $this->messages = array();
     }