portlet:actionURL not wrapping portlet:param

i'm not sure if it's general portlet taglib issue or just related to freemarker.

i'm importing taglib to freemarker via: <#assign portlet=JspTaglibs["/WEB-INF/portlet.tld"]>

then i use portlet tags in my template:
<@portlet.actionURL><@portlet.param name="action" value="history"/></@portlet.actionURL>

i get just action url without the parameter being appended.

pluto-taglib/src/main/java/org/apache/pluto/tags/BasicURLTag.java doStartTag() method returns EVAL_PAGE, if i change this to EVAL_BODY_INCLUDE, suddenly tag starts to work ok - ie parameters get appended to the url.

i'm not a jsp developer and don't know anything about tablib programming so i'm not sure if this fix is valid one.