minor #4874 Remove trailing whitespace (WouterJ)

This PR was merged into the 2.3 branch.

Discussion
----------

Remove trailing whitespace

| Q   | A
| --- | ---
| Doc fix? | yes
| New docs? | no
| Applies to | all
| Fixed tickets | -

Commits
-------

98bd7ba Remove trailing whitespace

book/controller.rst

@@ -556,7 +556,7 @@ Symfony will automatically return a 500 HTTP response code.
     throw new \Exception('Something went wrong!');
 
 In every case, an error page is shown to the end user and a full debug
-error page is shown to the developer (i.e. when you're using ``app_dev.php`` - 
+error page is shown to the developer (i.e. when you're using ``app_dev.php`` -
 see :ref:`page-creation-environments`).
 
 You'll want to customize the error page your user sees. To do that, see the

book/from_flat_php_to_symfony2.rst

@@ -244,7 +244,7 @@ the layout:
 
     <?php include 'layout.php' ?>
 
-You now have a setup that will allow you to reuse the layout. 
+You now have a setup that will allow you to reuse the layout.
 Unfortunately, to accomplish this, you're forced to use a few ugly
 PHP functions (``ob_start()``, ``ob_get_clean()``) in the template. Symfony
 uses a Templating component that allows this to be accomplished cleanly

book/http_cache.rst

@@ -538,8 +538,8 @@ won't be asked to return the updated response until the cache finally becomes
 stale.
 
 The validation model addresses this issue. Under this model, the cache continues
-to store responses. The difference is that, for each request, the cache asks the 
-application if the cached response is still valid or if it needs to be regenerated. 
+to store responses. The difference is that, for each request, the cache asks the
+application if the cached response is still valid or if it needs to be regenerated.
 If the cache *is* still valid, your application should return a 304 status code
 and no content. This tells the cache that it's ok to return the cached response.
 

book/service_container.rst

@@ -611,7 +611,7 @@ the service container gives you a much more appealing option:
         services:
             my_mailer:
                 # ...
-            
+
             newsletter_manager:
                 class:     Acme\HelloBundle\Newsletter\NewsletterManager
                 arguments: ["@my_mailer"]
@@ -696,7 +696,7 @@ Injecting the dependency by the setter method just needs a change of syntax:
         services:
             my_mailer:
                 # ...
-            
+
             newsletter_manager:
                 class:     Acme\HelloBundle\Newsletter\NewsletterManager
                 calls:
@@ -731,7 +731,7 @@ Injecting the dependency by the setter method just needs a change of syntax:
         use Symfony\Component\DependencyInjection\Reference;
 
         $container->setDefinition('my_mailer', ...);
-        
+
         $container->setDefinition('newsletter_manager', new Definition(
             'Acme\HelloBundle\Newsletter\NewsletterManager'
         ))->addMethodCall('setMailer', array(
@@ -777,7 +777,7 @@ it exists and do nothing if it doesn't:
                 <service id="my_mailer">
                 <!-- ... -->
                 </service>
-                
+
                 <service id="newsletter_manager" class="Acme\HelloBundle\Newsletter\NewsletterManager">
                     <argument type="service" id="my_mailer" on-invalid="ignore" />
                 </service>
@@ -792,7 +792,7 @@ it exists and do nothing if it doesn't:
         use Symfony\Component\DependencyInjection\ContainerInterface;
 
         $container->setDefinition('my_mailer', ...);
-        
+
         $container->setDefinition('newsletter_manager', new Definition(
             'Acme\HelloBundle\Newsletter\NewsletterManager',
             array(

components/class_loader/cache_class_loader.rst

@@ -4,7 +4,7 @@
     single: ClassLoader; Cache
     single: ClassLoader; XcacheClassLoader
     single: XCache; XcacheClassLoader
-    
+
 Cache a Class Loader
 ====================
 
@@ -33,16 +33,16 @@ ApcClassLoader
 ``findFile()`` method using `APC`_::
 
     require_once '/path/to/src/Symfony/Component/ClassLoader/ApcClassLoader.php';
-    
+
     // instance of a class that implements a findFile() method, like the ClassLoader
     $loader = ...;
-    
+
     // sha1(__FILE__) generates an APC namespace prefix
     $cachedLoader = new ApcClassLoader(sha1(__FILE__), $loader);
-    
+
     // register the cached class loader
     $cachedLoader->register();
-    
+
     // deactivate the original, non-cached loader if it was registered previously
     $loader->unregister();
 
@@ -56,16 +56,16 @@ XcacheClassLoader
 it is straightforward::
 
     require_once '/path/to/src/Symfony/Component/ClassLoader/XcacheClassLoader.php';
-    
+
     // instance of a class that implements a findFile() method, like the ClassLoader
     $loader = ...;
-    
+
     // sha1(__FILE__) generates an XCache namespace prefix
     $cachedLoader = new XcacheClassLoader(sha1(__FILE__), $loader);
-    
+
     // register the cached class loader
     $cachedLoader->register();
-    
+
     // deactivate the original, non-cached loader if it was registered previously
     $loader->unregister();
 

components/class_loader/debug_class_loader.rst

@@ -1,6 +1,6 @@
 .. index::
     single: ClassLoader; DebugClassLoader
-    
+
 Debugging a Class Loader
 ========================
 
@@ -16,5 +16,5 @@ Using the ``DebugClassLoader`` is as easy as calling its static
 :method:`Symfony\\Component\\ClassLoader\\DebugClassLoader::enable` method::
 
     use Symfony\Component\ClassLoader\DebugClassLoader;
-    
+
     DebugClassLoader::enable();

components/class_loader/map_class_loader.rst

@@ -1,6 +1,6 @@
 .. index::
     single: ClassLoader; MapClassLoader
-    
+
 MapClassLoader
 ==============
 
@@ -26,14 +26,14 @@ Using it is as easy as passing your mapping to its constructor when creating
 an instance of the ``MapClassLoader`` class::
 
     require_once '/path/to/src/Symfony/Component/ClassLoader/MapClassLoader';
-    
+
     $mapping = array(
         'Foo' => '/path/to/Foo',
         'Bar' => '/path/to/Bar',
     );
-    
+
     $loader = new MapClassLoader($mapping);
-    
+
     $loader->register();
 
 .. _PSR-0: http://www.php-fig.org/psr/psr-0/

components/css_selector.rst

@@ -76,7 +76,7 @@ web-browser.
 
 * link-state selectors: ``:link``, ``:visited``, ``:target``
 * selectors based on user action: ``:hover``, ``:focus``, ``:active``
-* UI-state selectors: ``:invalid``, ``:indeterminate`` (however, ``:enabled``, 
+* UI-state selectors: ``:invalid``, ``:indeterminate`` (however, ``:enabled``,
   ``:disabled``, ``:checked`` and ``:unchecked`` are available)
 
 Pseudo-elements (``:before``, ``:after``, ``:first-line``,

components/dependency_injection/advanced.rst

@@ -17,7 +17,7 @@ using the ``get()`` method::
 
 In some cases, a service *only* exists to be injected into another service
 and is *not* intended to be fetched directly from the container as shown
-above. 
+above.
 
 .. _inlined-private-services:
 

components/security/authentication.rst

@@ -257,7 +257,7 @@ in) is correct, you can use::
 
     // fetch the Acme\Entity\LegacyUser
     $user = ...;
-    
+
     // the submitted password, e.g. from the login form
     $plainPassword = ...;
 

components/templating/helpers/assetshelper.rst

@@ -75,7 +75,7 @@ Asset path generation is handled internally by packages. The component provides
 You can also use multiple packages::
 
     use Symfony\Component\Templating\Asset\PathPackage;
-    
+
     // ...
     $templateEngine->set(new AssetsHelper());
 

components/templating/introduction.rst

@@ -135,7 +135,7 @@ escaper using the
 Helpers
 -------
 
-The Templating component can be easily extended via helpers. Helpers are PHP objects that 
+The Templating component can be easily extended via helpers. Helpers are PHP objects that
 provide features useful in a template context. The component has
 2 built-in helpers:
 

contributing/code/standards.rst

@@ -79,7 +79,7 @@ example containing most features described below:
 
             throw new \RuntimeException(sprintf('Unrecognized dummy option "%s"', $dummy));
         }
-        
+
         private function reverseBoolean($value = null, $theSwitch = false)
         {
             if (!$theSwitch) {
@@ -95,7 +95,7 @@ Structure
 
 * Add a single space after each comma delimiter;
 
-* Add a single space around binary operators (``==``, ``&&``, ...), with 
+* Add a single space around binary operators (``==``, ``&&``, ...), with
   the exception of the concatenation (``.``) operator;
 
 * Place unary operators (``!``, ``--``, ...) adjacent to the affected variable;

cookbook/configuration/external_parameters.rst

@@ -14,12 +14,12 @@ Environment Variables
 ---------------------
 
 Symfony will grab any environment variable prefixed with ``SYMFONY__`` and
-set it as a parameter in the service container. Some transformations are 
+set it as a parameter in the service container. Some transformations are
 applied to the resulting parameter name:
 
 * ``SYMFONY__`` prefix is removed;
 * Parameter name is lowercased;
-* Double underscores are replaced with a period, as a period is not 
+* Double underscores are replaced with a period, as a period is not
   a valid character in an environment variable name.
 
 For example, if you're using Apache, environment variables can be set using

cookbook/configuration/override_dir_structure.rst

@@ -151,7 +151,7 @@ the ``extra.symfony-web-dir`` option in the ``composer.json`` file:
     work:
 
     .. code-block:: bash
-    
+
         $ php app/console cache:clear --env=prod
         $ php app/console assetic:dump --env=prod --no-debug
 

cookbook/deployment/platformsh.rst

@@ -4,8 +4,8 @@
 Deploying to Platform.sh
 ========================
 
-This step-by-step cookbook describes how to deploy a Symfony web application to 
-`Platform.sh`_. You can read more about using Symfony with Platform.sh on the 
+This step-by-step cookbook describes how to deploy a Symfony web application to
+`Platform.sh`_. You can read more about using Symfony with Platform.sh on the
 official `Platform.sh documentation`_.
 
 Deploy an Existing Site
@@ -15,23 +15,23 @@ In this guide, it is assumed your codebase is already versioned with Git.
 
 Get a Project on Platform.sh
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 
+
 You need to subscribe to a `Platform.sh project`_. Choose the development plan
-and go through the checkout process. Once your project is ready, give it a name 
+and go through the checkout process. Once your project is ready, give it a name
 and choose: **Import an existing site**.
 
 Prepare Your Application
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
-To deploy your Symfony application on Platform.sh, you simply need to add a 
+To deploy your Symfony application on Platform.sh, you simply need to add a
 ``.platform.app.yaml`` at the root of your Git repository which will tell
-Platform.sh how to deploy your application (read more about 
+Platform.sh how to deploy your application (read more about
 `Platform.sh configuration files`_).
 
 .. code-block:: yaml
 
     # .platform.app.yaml
-    
+
     # This file describes an application. You can have multiple applications
     # in the same project.
 
@@ -96,7 +96,7 @@ Configure Database Access
 
 Platform.sh overrides your database specific configuration via importing the
 following file::
-    
+
     // app/config/parameters_platform.php
     <?php
     $relationships = getenv("PLATFORM_RELATIONSHIPS");
@@ -134,7 +134,7 @@ Make sure this file is listed in your *imports*:
 Deploy your Application
 ~~~~~~~~~~~~~~~~~~~~~~~
 
-Now you need to add a remote to Platform.sh in your Git repository (copy the 
+Now you need to add a remote to Platform.sh in your Git repository (copy the
 command that you see on the Platform.sh web UI):
 
 .. code-block:: bash
@@ -150,7 +150,7 @@ Commit the Platform.sh specific files created in the previous section:
 
 .. code-block:: bash
 
-    $ git add .platform.app.yaml .platform/* 
+    $ git add .platform.app.yaml .platform/*
     $ git add app/config/config.yml app/config/parameters_platform.php
     $ git commit -m "Adding Platform.sh configuration files."
 
@@ -163,22 +163,22 @@ Push your code base to the newly added remote:
 That's it! Your application is being deployed on Platform.sh and you'll soon be
 able to access it in your browser.
 
-Every code change that you do from now on will be pushed to Git in order to 
+Every code change that you do from now on will be pushed to Git in order to
 redeploy your environment on Platform.sh.
 
-More information about `migrating your database and files <migrate-existing-site>`_ can be found on the 
+More information about `migrating your database and files <migrate-existing-site>`_ can be found on the
 Platform.sh documentation.
 
 Deploy a new Site
 -----------------
- 
-You can start a new `Platform.sh project`_. Choose the development plan and go 
+
+You can start a new `Platform.sh project`_. Choose the development plan and go
 through the checkout process.
 
 Once your project is ready, give it a name and choose: **Create a new site**.
 Choose the *Symfony* stack and a starting point such as *Standard*.
 
-That's it! Your Symfony application will be bootstrapped and deployed. You'll 
+That's it! Your Symfony application will be bootstrapped and deployed. You'll
 soon be able to see it in your browser.
 
 .. _`Platform.sh`: https://platform.sh

cookbook/form/form_collections.rst

@@ -463,8 +463,8 @@ we talk about next!).
 
 .. caution::
 
-    You have to create **both** ``addTag`` and ``removeTag`` methods, 
-    otherwise the form will still use ``setTag`` even if ``by_reference`` is ``false``. 
+    You have to create **both** ``addTag`` and ``removeTag`` methods,
+    otherwise the form will still use ``setTag`` even if ``by_reference`` is ``false``.
     You'll learn more about the ``removeTag`` method later in this article.
 
 .. sidebar:: Doctrine: Cascading Relations and saving the "Inverse" side

cookbook/form/unit_testing.rst

@@ -184,7 +184,7 @@ on other extensions. You need add those extensions to the factory object::
         protected function setUp()
         {
             parent::setUp();
-            
+
             $validator = $this->getMock('\Symfony\Component\Validator\ValidatorInterface');
             $validator->method('validate')->will($this->returnValue(new ConstraintViolationList()));
 

cookbook/security/access_control.rst

@@ -177,7 +177,7 @@ pattern so that it is only accessible by requests from the local server itself:
         security:
             # ...
             access_control:
-                # 
+                #
                 - { path: ^/internal, roles: IS_AUTHENTICATED_ANONYMOUSLY, ips: [127.0.0.1, ::1] }
                 - { path: ^/internal, roles: ROLE_NO_ACCESS }
 

cookbook/security/pre_authenticated.rst

@@ -71,8 +71,8 @@ in the x509 firewall configuration respectively.
     An authentication provider will only inform the user provider of the username
     that made the request. You will need to create (or use) a "user provider" that
     is referenced by the ``provider`` configuration parameter (``your_user_provider``
-    in the configuration example). This provider will turn the username into a User 
-    object of your choice. For more information on creating or configuring a user 
+    in the configuration example). This provider will turn the username into a User
+    object of your choice. For more information on creating or configuring a user
     provider, see:
 
     * :doc:`/cookbook/security/custom_provider`