===============================
Rule ``no_trailing_whitespace``
===============================

Remove trailing whitespace at the end of non-blank lines.

Examples
--------

Example #1
~~~~~~~~~~

.. code-block:: diff

   --- Original
   +++ New
    <?php
   -$a = 1;     
   +$a = 1;

Rule sets
---------

The rule is part of the following rule sets:

- `@PER <./../../ruleSets/PER.rst>`_
- `@PER-CS1.0 <./../../ruleSets/PER-CS1.0.rst>`_
- `@PER-CS2.0 <./../../ruleSets/PER-CS2.0.rst>`_
- `@PSR2 <./../../ruleSets/PSR2.rst>`_
- `@PSR12 <./../../ruleSets/PSR12.rst>`_
- `@PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>`_
- `@Symfony <./../../ruleSets/Symfony.rst>`_