New in version 1.6.2: The trim filter was added in Twig 1.6.2.
The trim filter strips whitespace (or other characters) from the beginning and end of a string:
{{ ' I like Twig. '|trim }}
{# outputs 'I like Twig.' #}
{{ ' I like Twig.'|trim('.') }}
{# outputs ' I like Twig' #}
Note
Internally, Twig uses the PHP trim function.