the implementation is for the newer style of includes, where one can write in a wiki page e.g.
bla bla
{{categories -locale default+system}}
...
The applicable options can be found under "-parameter" in xowiki-portlet-procs. In yesterdays code, I have not simplified the usage of the new-style xowiki portlets for the cases, where some adp-file includes the portlet (such as oacs-view.adp).
For this purpose, i have added yet another two-liner named include
to CVS, such one can now quite simply all kind of new-style xowiki portlets with the same syntax as inside of an xowiki page between the double curly braces.
In essence, one can write now in the code of the oacs-view
<DIV ..>
<include src="/packages/xowiki/www/portlets/include"
&__including_page=page
portlet="categories -locale default+system -open_page \@name\@ -decoration plain">
<hr>
<include src="/packages/xowiki/www/portlets/include"
&__including_page=page
portlet="categories -open_page \@name\@ -decoration plain">
</DIV>
where you get now the categories twice, once with new 2-language entries, and then with the default (now filtering on locale)