Use of drupal_map_assoc to create options arrays is usually wrong

API page: https://api.drupal.org/api/examples/form_example!form_example_states.inc...

I'm very surprised that this code has an #options array example using drupal_map_assoc() on arrays of translated strings. The keys of the array, which contain the data to be stored upon submit, should not be passed through t() and translated, otherwise the form will break and stored data will be corrupted on multilingual sites. The corrected array for the example of a 'select' element would be

array(
  'uk' => t('UK'),
  'other' => t('Other'),
)

https://api.drupal.org/api/drupal/developer%21topics%21forms_api_referen...
Similarly for the checkboxes example:

array(
  'SAT' => t('SAT'),
  'ACT' => t('ACT'),
)

These bad examples were copied over to the Form API documentation, so I've filed an issue there too: #2680521: Use of drupal_map_assoc to create options arrays is wrong in the form API reference.