Wikimedia Bugzilla is closed!

"Special:" pages do not exist in the same sense that other pages of the wiki do.
Rather than entries in the database, they are [to simplify somewhat] seperate
programs that interface with the rest of the software and its database. Thus the
check for existence made for linking to a "real" article can't be applied here;
also, the "red link" styling implies that the target doesn't exist *and can be
created*, so I'm uncertain whether a link to something like
[[Special:NonexistentSpecialPage]] should look the same.

Nonetheless, it would be nice if it was possible to spot such invalid links (it
probably indicates a typo needing correction); we could assign some different
styling to the link, or possibly even not render it as a link (although this is
probably asking for trouble). The biggest problem is with cache invalidation: if
a new Special page were created, we'd really want the links to it to stop
showing up invalid, and there's no way of tracking them with the current DB
structure; but maybe that wouldn't be a problem very often.

I must say, it would be nice to have an overhaul of the Special: pages system
sometime, to make the whole thing a bit more structured; but, I guess, it's not
a priority.

Fixed in r22450.

Additional fix in r22451 r22452