[development] t() API documentation

Hello, t() API documentation reads "Avoid escaping quotation marks wherever possible". Below is the snippet from http://api.drupal.org/api/drupal/includes--common.inc/function/t/6 Incorrect: <?php $output .= t('Don\'t click me.'); ?> Correct: <?php $output .= t("Don't click me."); ?> However the core user module's hook_block implementation is following incorrect style. The same is the case with D7 user module as well. I think the purpose of avoiding t('Don\'t click me.'); style is just to make it more readable and easier for translation. Is there any reasons for encouraging incorrect style in core. Please enlighten me on this. -- Sivaji +91 9941 571 690