- install_import_translations in core/
includes/ install.core.inc - Imports languages via a batch process during installation.
- install_select_language_form in core/
includes/ install.core.inc - Form constructor for the language selection form.
- language_admin_add_predefined_form_submit in core/
modules/ language/ language.admin.inc - Process the predefined language addition form submission.
- language_admin_predefined_list in core/
modules/ language/ language.admin.inc - Prepare a language code list for unused predefined languages.
- language_save in core/
modules/ language/ language.module - API function to add or update a language.
- language_update_1003 in core/
modules/ language/ language.install - Add the native name to all enabled languages.
- locale_translate_import_form_submit in core/
modules/ locale/ locale.bulk.inc - Process the locale import form submission.