on 1.2.0_04p2
<h:commandLink>
<f:param name="foo" value="1,2,3"/>
</h:commandLink>
is rendered as
<a href="#" onclick="if(typeof jsfcljs ==
'function'){jsfcljs(document.forms['j_id56'],'j_id56:j_id57,j_id56:j_id57,foo,1,2,3','');}return
false">link</a>
and gets submitted as
foo=1
2=3
feature? bug? fixed in more recent version?