9 string references to 'language_default' in Drupal 7

DrupalUnitTestCase::setUp in modules/simpletest/drupal_web_test_case.php

Sets up unit test environment.

DrupalWebTestCase::prepareEnvironment in modules/simpletest/drupal_web_test_case.php

Prepares the current environment for running the test.

LocaleUILanguageNegotiationTest::testUILanguageNegotiation in modules/locale/locale.test

Tests for language switching by URL path.

locale_add_language in includes/locale.inc

API function to add a language.

locale_languages_edit_form_submit in modules/locale/locale.admin.inc

Process the language editing form submission.

locale_languages_overview_form_submit in modules/locale/locale.admin.inc

Process language overview form submissions, updating existing languages.

locale_uninstall in modules/locale/locale.install

Implements hook_uninstall().

locale_update_7001 in modules/locale/locale.install

Upgrade language negotiation settings.

_locale_rebuild_js in includes/locale.inc

(Re-)Creates the JavaScript translation file for a language.