Last modified: 2010-05-15 15:38:06 UTC
It's rather silly to include the namespace in the category listing at all, but
I'm assuming that removing that isn't an option, so I propose that using the
syntax [[Category:Foo|]] in the article [[Nspace:Bar]] will listed Nspace:Bar
under Category:Foo with a sort key of "Foo" instead of the default "Category:Foo".
Someone fixed this inadvertently when tweaking the pipe trick regular
expression, it would seem.