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``trim``
========
The ``trim`` filter strips whitespace (or other characters) from the beginning
and end of a string:
.. code-block:: jinja
{{ ' I like Twig. '|trim }}
{# outputs 'I like Twig.' #}
{{ ' I like Twig.'|trim('.') }}
{# outputs ' I like Twig' #}
{{ ' I like Twig. '|trim(side='left') }}
{# outputs 'I like Twig. ' #}
{{ ' I like Twig. '|trim(' ', 'right') }}
{# outputs ' I like Twig.' #}
.. note::
Internally, Twig uses the PHP `trim`_, `ltrim`_, and `rtrim`_ functions.
Arguments
---------
* ``character_mask``: The characters to strip
* ``side``: The default is to strip from the left and the right (`both`) sides, but `left`
and `right` will strip from either the left side or right side only
.. _`trim`: http://php.net/trim
.. _`ltrim`: http://php.net/ltrim
.. _`rtrim`: http://php.net/rtrim