changed the documentation to advertize null as begin the null value and none as an alias

doc/api.rst

@@ -300,7 +300,7 @@ The ``core`` extension defines all the core features of Twig:
   * ``odd``
   * ``defined``
   * ``sameas``
-  * ``none``
+  * ``null``
   * ``divisibleby``
   * ``constant``
   * ``empty``

doc/tags/import.rst

@@ -30,7 +30,7 @@ That way you can access the attributes:
         <dt>Username</dt>
         <dd>{{ forms.input('username') }}</dd>
         <dt>Password</dt>
-        <dd>{{ forms.input('password', none, 'password') }}</dd>
+        <dd>{{ forms.input('password', null, 'password') }}</dd>
     </dl>
     <p>{{ forms.textarea('comment') }}</p>
 

doc/tags/macro.rst

@@ -45,7 +45,7 @@ The macro can then be called at will:
 .. code-block:: jinja
 
     <p>{{ forms.input('username') }}</p>
-    <p>{{ forms.input('password', none, 'password') }}</p>
+    <p>{{ forms.input('password', null, 'password') }}</p>
 
 If macros are defined and used in the same template, you can use the
 special ``_self`` variable, without importing them:

doc/templates.rst

@@ -480,8 +480,8 @@ exist:
 * ``true`` / ``false``: ``true`` represents the true value, ``false``
   represents the false value.
 
-* ``none``: ``none`` represents no specific value (the equivalent of ``null`` in
-  PHP). This is the value returned when a variable does not exist.
+* ``null``: ``null`` represents no specific value. This is the value returned
+  when a variable does not exist. ``none`` is an alias for ``null``.
 
 Arrays and hashes can be nested:
 

doc/tests/index.rst

@@ -5,7 +5,7 @@ Tests
     :maxdepth: 1
 
     divisibleby
-    none
+    null
     even
     odd
     sameas

doc/tests/none.rst

@@ -1,8 +1,12 @@
-``none``
+``null``
 ========
 
-``none`` returns ``true`` if the variable is ``none``:
+``null`` returns ``true`` if the variable is ``null``:
 
 .. code-block:: jinja
 
-    {{ var is none }}
+    {{ var is null }}
+
+.. note::
+
+    ``none`` is an alias for ``null``.