sfTwigPlugin tries to follow the convention over configuration guidelines
where possible. Still there is the possibility of configuring
through standard symfony settings.
Right now the configuration is kinda limited or not needed.
sf_debug to determine if Twig should automatically reload and cache the
sf_twig_extensions setting has been added to
settings.yml that holds an
sfTwigView takes all those names and
tries to initiate them into
Twig_Environment::addExtension(). If it cannot
do that, it will throw an