CommonAutocompleteTagsTestCase::testBackdropImplodeTags in core/modules/simpletest/tests/common.test

Implode a series of tags.

drupal_implode_tags in core/includes/drupal.inc

Implodes an array of tags into a string.

TaxonomyLanguageFunctionalTest::testNodeTermLanguageCreation in core/modules/taxonomy/tests/taxonomy.test

Test term creation with a free-tagging vocabulary from the node form.

TaxonomyTermTestCase::testNodeTermCreationAndDeletion in core/modules/taxonomy/tests/taxonomy.test

Test term creation with a free-tagging vocabulary from the node form.

taxonomy_autocomplete in core/modules/taxonomy/taxonomy.pages.inc

Page callback: Outputs JSON for taxonomy autocomplete suggestions.

views_ajax_autocomplete_taxonomy in core/modules/views/includes/ajax.inc

Page callback for views taxonomy autocomplete.