changed notation of namespaced templates to @namespace/template_path

doc/api.rst

@@ -151,11 +151,11 @@ methods::
 The filesystem loader also supports namespaced templates. This allows to
 divide your templates in different namespaces; each namespace having its own
 template paths. Namespaced templates can be accessed via the special
-``namespace_name#template_path`` notation::
+``@namespace_name/template_path`` notation::
 
     $loader->addPath($templateDir, 'admin');
 
-    $twig->render('admin#index.html', array());
+    $twig->render('@admin/index.html', array());
 
 The ``setPaths()``, ``addPath()``, and ``prependPath()`` methods all takes a
 namespace as an optional second argument; when not specified, these methods

lib/Twig/Loader/Filesystem.php

@@ -143,8 +143,12 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface
         $this->validateName($name);
 
         $namespace = '';
-        if (false !== $pos = strpos($name, '#')) {
+        if (isset($name[0]) && '@' == $name[0]) {
-            $namespace = substr($name, 0, $pos);
+            if (false === $pos = strpos($name, '/')) {
+                throw new \InvalidArgumentException(sprintf('Malformed template name "%s".', $name));
+            }
+
+            $namespace = substr($name, 1, $pos - 1);
             $name = substr($name, $pos + 1);
         }
 

test/Twig/Tests/Loader/FilesystemTest.php

@@ -75,6 +75,6 @@ class Twig_Tests_Loader_FilesystemTest extends PHPUnit_Framework_TestCase
         ), $loader->getPaths('named'));
 
         $this->assertEquals("path (final)\n", $loader->getSource('index.html'));
-        $this->assertEquals("named path (final)\n", $loader->getSource('named#index.html'));
+        $this->assertEquals("named path (final)\n", $loader->getSource('@named/index.html'));
     }
 }