Hi All
Please note that a space as a *sortkey*, as in [[Category:Foo| ]], is usable,
and actually used; it is much the same as using * or ! as a sort key: moves the
entry for the page to the top of the category. Some people prefer a space for
that, because it does not create a heading in the category listing (well,
actually, it does create an empty h3 tag). Though i can't tell you how often
it's actually used.
Anyway, treating [[Category:Foo| ]] just like [[Category:Foo|]], i.e. turning it
into [[Category:Foo|Foo]], would break things.
-- Daniel