src/Debug/Config.php
private function setCopyValues($values)
    {
        if (isset($values['debug']['emailLog']) && $values['debug']['emailLog'] === true) {
            $values['debug']['emailLog'] = 'onError';
        }
        foreach (array('emailFrom','emailFunc','emailTo') as $key) {
            if (isset($values['debug'][$key]) && !isset($values['errorEmailer'][$key])) {
                // also set for errorEmailer
                $values['errorEmailer'][$key] = $values['debug'][$key];
            }
        }
        return $values;
    }
private function setCopyValues($values)
    {
        if (isset($values['debug']['emailLog']) && $values['debug']['emailLog'] === true) {
            $values['debug']['emailLog'] = 'onError';
        }
        foreach (array('emailFrom','emailFunc','emailTo') as $key) {
            if (isset($values['debug'][$key]) && !isset($values['errorEmailer'][$key])) {
                // also set for errorEmailer
                $values['errorEmailer'][$key] = $values['debug'][$key];
            }
        }
        return $values;
    }
some config values exist in multiple modules

@param array $values values

@return array