docs/conf/extra/httpd-manual.conf.in

#
# Provide access to the documentation on your server as
#  http://yourserver.example.com/manual/
# The documentation is always available at
#  http://httpd.apache.org/docs/trunk/
#
# Required modules: mod_alias, mod_authz_core, mod_authz_host,
#                   mod_setenvif, mod_negotiation
#

AliasMatch ^/manual(?:/(?:da|de|en|es|fr|ja|ko|pt-br|ru|tr|zh-cn))?(/.*)?$ "@exp_manualdir@$1"

<Directory "@exp_manualdir@">
    Options Indexes
    AllowOverride None
    Require all granted

    <Files *.html>
        SetHandler type-map
    </Files>
    # .tr is text/troff in mime.types!
    <Files *.html.tr.utf8>
        ForceType "text/html; charset=utf-8"
    </Files>

    AddLanguage da .da

    SetEnvIf Request_URI ^/manual/(da|de|en|es|fr|ja|ko|pt-br|ru|tr|zh-cn)/ prefer-language=$1
    RedirectMatch 301 ^/manual(?:/(da|de|en|es|fr|ja|ko|pt-br|ru|tr|zh-cn)){2,}(/.*)?$ /manual/$1$2

    LanguagePriority en da de es fr ja ko pt-br ru tr
    ForceLanguagePriority Prefer Fallback
</Directory>