Kalan schrieb:
You have to turn on namespace subpages [1] to make it work. If you don't, there is no way to extract the subpage title, since there are no subpages in namespace in question.
I see. There are already subpages in the form of article/subpage. Is it a roblem to enable $wgNamespacesWithSubpages afterwards? If $wgNamespacesWithSubpages isn't enabled, an article in the form article/subpage ist equivalent to a normal article without a subpage, right?