All linebreaks will be converted to <br /> tags in the given
variable. This is equivalent to the PHP nl2br() function.
Example 5-14. nl2br
index.php:
$smarty = new Smarty;
$smarty->assign('articleTitle', "Sun or rain expected\ntoday, dark tonight");
$smarty->display('index.tpl');
index.tpl:
{$articleTitle|nl2br}
OUTPUT:
Sun or rain expected<br />today, dark tonight