$Module lang Varnish Lang Module

DESCRIPTION
===========

`lang` a simple VMOD for [Varnish Cache](https://www.varnish-cache.org/)
which provides language detection based on the accept-language header.

$Function STRING detect(STRING, STRING, STRING)

Description
    It accepts the accept language header, a list of languages (separated by comma) and
    the default language. The given languages are evaluated and the best fit is choosen.
    If there is no match, the default language given is returned.
Example
    set req.x-lang = lang.detect(req.http.Accept-Language, "de,en,fr,it", "de");

$Function STRING version()

Description
    Returns the version of the VMOD.
Example
    set req.x-version = lang.version();