#Setting up the language variable "L" to be passed along with links
config.linkVars = L

#English, sys_language.uid = 1
config.sys_language_uid=0
config.language = en
config.locale_all = english
plugin.tx_indexedsearch._DEFAULT_PI_VARS.lang = 0

#German, sys_language.uid = 1
[globalVar = GP:L=1]
config.sys_language_uid = 1
config.language = de
config.locale_all = de_CH
plugin.tx_indexedsearch._DEFAULT_PI_VARS.lang = 1
[end]

#French, sys_language.uid = 2
[globalVar = GP:L=2]
config.sys_language_uid = 2
config.language = fr
config.locale_all = french
config.htmlTag_langKey = fr
plugin.tx_indexedsearch._DEFAULT_PI_VARS.lang = 2
[end]

#Italian, sys_language.uid = 3
[globalVar = GP:L=3]
config.sys_language_uid = 3
config.language = it
config.locale_all = italian
config.htmlTag_langKey = it
plugin.tx_indexedsearch._DEFAULT_PI_VARS.lang = 3
[end]

#Spanish, sys_language.uid = 4
[globalVar = GP:L=4]
config.sys_language_uid = 4
config.language = es
config.locale_all = spanish
config.htmlTag_langKey = es
plugin.tx_indexedsearch._DEFAULT_PI_VARS.lang = 4
[end]

#Russian, sys_language.uid = 5
[globalVar = GP:L=5]
config.sys_language_uid = 5
config.language = ru
config.locale_all = russian
config.htmlTag_langKey = ru
plugin.tx_indexedsearch._DEFAULT_PI_VARS.lang = 5
[end]

Multi-Language Setup

TYPO3