Requires {% load i18n %}
Add {% load i18n %} near the top of any template that
uses |language_bidi. Without it Django does not
know the name and raises TemplateSyntaxError.
True when the given language is written right to left.
Template
{% load i18n %}
{% if lang.code|language_bidi %}dir="rtl"{% endif %}
The per-language answer to what {% get_current_language_bidi %} tells you about the active one.
