enhanced foreach loops

I would like to enhance the foreach loop by adding next and previous to the foreach variables. Example usage: {foreach from=$message.backtrace item='call' name='backtrace'} {assign var='previous_call' value=|$smarty.foreach.backtrace.next}| <li style='list-style: none;'>{$call.file} [{$call.line}] - {$previous_call.class}.{$previous_call.function}(){/if}</li> {/foreach} In case you cannot tell I am using this to print a backtrace ( I want it to show the method it is currently in, not the one that it is calling ). Where does the foreach implementation reside in source? And is this a good thing to add to the base code? -- Kerry Wilson Lead Developer Williams Web kwilson@wmsco.com | 423.485.4747