amargs of meta=allmessages does not allow dupe values like amargs=1|1

This breaks, when $1 and $2 have equal content, see url for an example.

You have to set ApiBase::PARAM_ALLOW_DUPLICATES => true for args in ApiQueryAllmessages.

Thanks.

Version: unspecified
Severity: enhancement
URL: http://en.wikipedia.org/w/api.php?action=query&meta=allmessages&ammessages=search-result-category-size&enableparser=&amargs=1|1|1