@@ -1,5 +1,6 @@

 * 1.27.0 (2016-XX-XX)

+ * fixed regression when registering two extensions having the same class name

  * deprecated Twig_LoaderInterface::getSource() (implement Twig_SourceContextLoaderInterface instead)

  * fixed the filesystem loader with relative paths

  * deprecated Twig_Node::getLine() in favor of Twig_Node::getTemplateLine()

@@ -49,7 +49,7 @@ class Twig_Environment

     private $bcWriteCacheFile = false;

     private $bcGetCacheFilename = false;

     private $lastModifiedExtension = 0;

-    private $legacyExtensionNames = array();

+    private $extensionsByClass = array();

     private $runtimeLoaders = array();

     private $runtimes = array();

     private $optionsHash;

@@ -808,12 +808,16 @@ class Twig_Environment

      */

     public function hasExtension($class)

     {

-        if (isset($this->legacyExtensionNames[$class])) {

-            $class = $this->legacyExtensionNames[$class];

-            @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);

+        $class = ltrim($class, '\\');

+        if (isset($this->extensions[$class])) {

+            if ($class !== get_class($this->extensions[$class])) {

+                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);

+            }

+

+            return true;

         }

-        return isset($this->extensions[ltrim($class, '\\')]);

+        return isset($this->extensionsByClass[ltrim($class, '\\')]);

     }

     /**

@@ -833,18 +837,21 @@ class Twig_Environment

      */

     public function getExtension($class)

     {

-        if (isset($this->legacyExtensionNames[$class])) {

-            $class = $this->legacyExtensionNames[$class];

-            @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);

-        }

-

         $class = ltrim($class, '\\');

-        if (!isset($this->extensions[$class])) {

+        if (isset($this->extensions[$class])) {

+            if ($class !== get_class($this->extensions[$class])) {

+                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);

+            }

+

+            return $this->extensions[$class];

+        }

+

+        if (!isset($this->extensionsByClass[$class])) {

             throw new Twig_Error_Runtime(sprintf('The "%s" extension is not enabled.', $class));

         }

-        return $this->extensions[$class];

+        return $this->extensionsByClass[$class];

     }

     /**

@@ -878,25 +885,21 @@ class Twig_Environment

      */

     public function addExtension(Twig_ExtensionInterface $extension)

     {

-        $class = get_class($extension);

-

         if ($this->extensionInitialized) {

-            throw new LogicException(sprintf('Unable to register extension "%s" as extensions have already been initialized.', $class));

+            throw new LogicException(sprintf('Unable to register extension "%s" as extensions have already been initialized.', $extension->getName()));

         }

-        $m = new ReflectionMethod($extension, 'getName');

-        $legacyName = 'Twig_Extension' !== $m->getDeclaringClass()->getName() ? $extension->getName() : null;

-

-        if (isset($this->extensions[$class]) || (null !== $legacyName && isset($this->legacyExtensionNames[$legacyName]))) {

-            unset($this->extensions[$this->legacyExtensionNames[$legacyName]], $this->legacyExtensionNames[$legacyName]);

-            @trigger_error(sprintf('The possibility to register the same extension twice ("%s") is deprecated since version 1.23 and will be removed in Twig 2.0. Use proper PHP inheritance instead.', $class), E_USER_DEPRECATED);

+        $class = get_class($extension);

+        if ($class !== $extension->getName()) {

+            if (isset($this->extensions[$extension->getName()])) {

+                unset($this->extensions[$extension->getName()], $this->extensionsByClass[$class]);

+                @trigger_error(sprintf('The possibility to register the same extension twice ("%s") is deprecated since version 1.23 and will be removed in Twig 2.0. Use proper PHP inheritance instead.', $extension->getName()), E_USER_DEPRECATED);

+            }

         }

         $this->lastModifiedExtension = 0;

-        if ($legacyName !== $class) {

-            $this->legacyExtensionNames[$legacyName] = $class;

-        }

-        $this->extensions[$class] = $extension;

+        $this->extensionsByClass[$class] = $extension;

+        $this->extensions[$extension->getName()] = $extension;

         $this->updateOptionsHash();

     }

@@ -913,16 +916,20 @@ class Twig_Environment

     {

         @trigger_error(sprintf('The %s method is deprecated since version 1.12 and will be removed in Twig 2.0.', __METHOD__), E_USER_DEPRECATED);

-        if (isset($this->legacyExtensionNames[$name])) {

-            $name = $this->legacyExtensionNames[$name];

-            @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $name), E_USER_DEPRECATED);

-        }

-

         if ($this->extensionInitialized) {

             throw new LogicException(sprintf('Unable to remove extension "%s" as extensions have already been initialized.', $name));

         }

-        unset($this->extensions[ltrim($name, '\\')]);

+        $class = ltrim($name, '\\');

+        if (isset($this->extensions[$class])) {

+            if ($class !== get_class($this->extensions[$class])) {

+                @trigger_error(sprintf('Referencing the "%s" extension by its name (defined by getName()) is deprecated since 1.26 and will be removed in Twig 2.0. Use the Fully Qualified Extension Class Name instead.', $class), E_USER_DEPRECATED);

+            }

+

+            unset($this->extensions[$class]);

+        }

+

+        unset($this->extensions[$class]);

         $this->updateOptionsHash();

     }

@@ -277,6 +277,27 @@ class Twig_Tests_EnvironmentTest extends PHPUnit_Framework_TestCase

         $twig->loadTemplate($templateName);

     }

+    /**

+     * @group legacy

+     */

+    public function testHasGetExtensionWithDynamicName()

+    {

+        $twig = new Twig_Environment($this->getMockBuilder('Twig_LoaderInterface')->getMock());

+

+        $ext1 = new Twig_Tests_EnvironmentTest_Extension_DynamicWithDeprecatedName('ext1');

+        $ext2 = new Twig_Tests_EnvironmentTest_Extension_DynamicWithDeprecatedName('ext2');

+        $twig->addExtension($ext1);

+        $twig->addExtension($ext2);

+

+        $this->assertTrue($twig->hasExtension('ext1'));

+        $this->assertTrue($twig->hasExtension('ext2'));

+

+        $this->assertTrue($twig->hasExtension('Twig_Tests_EnvironmentTest_Extension_DynamicWithDeprecatedName'));

+

+        $this->assertSame($ext1, $twig->getExtension('ext1'));

+        $this->assertSame($ext2, $twig->getExtension('ext2'));

+    }

+

     public function testHasGetExtensionByClassName()

     {

         $twig = new Twig_Environment($this->getMockBuilder('Twig_LoaderInterface')->getMock());

@@ -538,6 +559,21 @@ class Twig_Tests_EnvironmentTest_Extension_WithDeprecatedName extends Twig_Exten

     }

 }

+class Twig_Tests_EnvironmentTest_Extension_DynamicWithDeprecatedName extends Twig_Extension

+{

+    private $name;

+

+    public function __construct($name)

+    {

+        $this->name = $name;

+    }

+

+    public function getName()

+    {

+        return $this->name;

+    }

+}

+

 class Twig_Tests_EnvironmentTest_TokenParser extends Twig_TokenParser

 {

     public function parse(Twig_Token $token)