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   2. drupal7

Validate system_send_email_action form submissions.

Code

modules/system/system.module, line 1672

<?php
function system_send_email_action_validate($form, $form_state) {
  $form_values = $form_state['values'];
  // Validate the configuration form.
  if (!valid_email_address($form_values['recipient']) && $form_values['recipient'] != '%author') {
    // We want the literal %author placeholder to be emphasized in the error message.
    form_set_error('recipient', t('Please enter a valid email address or %author.', array('%author' => '%author')));
  }
}
?>