constant LANGUAGE_NEGOTIATION_SELECTED

AccountFormController::form in drupal/core/modules/user/lib/Drupal/user/AccountFormController.php

Overrides Drupal\Core\Entity\EntityFormController::form().

LanguageUILanguageNegotiationTest::testUILanguageNegotiation in drupal/core/modules/language/lib/Drupal/language/Tests/LanguageUILanguageNegotiationTest.php

Tests for language switching by URL path.

language_negotiation_configure_form_table in drupal/core/modules/language/language.admin.inc

Builds a language negotiation method configuration table.

language_negotiation_method_get_first in drupal/core/includes/language.inc

Returns the ID of the language type's first language negotiation method.

language_types_initialize in drupal/core/includes/language.inc

Chooses a language based on language negotiation method settings.

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