Recommend a theme function to modify the 'Submitted by' line for a node?
You can alter the node info using template_preprocess_node
function template_preprocess_node(&amp;$variables) {
 // your code
}


The $variables array contains the following arguments:
$node
$view_mode
$page

This is the default value
$variables['submitted'] = t('Submitted by !username on !datetime', array('!username' =&gt; 
  $variables['name'], '!datetime' =&gt; $variables['date']));

You can override is as you wish. Give a try.