language_negotiation_configure_form in core/modules/locale/
Builds the configuration form for language negotiation.
language_negotiation_get_switch_links in core/includes/
Returns the language switch links for the given language.
language_negotiation_purge in core/includes/
Removes any unused language negotiation providers from the configuration.
language_negotiation_set in core/includes/
Saves a list of language negotiation providers.
language_provider_invoke in core/includes/
Helper function used to cache the language negotiation providers results.
locale_url_outbound_alter in core/modules/locale/locale.module
Implements hook_url_outbound_alter().