rowan.collins wrote:

The "canonical" name built into the software for that namespace is "Project:",
so that it can be standard even on projects that aren't called "Wikipedia"
(similarly "Project talk:" - none of the other namespaces have this problem,
since the names "User", "Talk", etc, are naturally generic).

I've thought before about having a flexible system for assigning "namespace
aliases" at the server level, but this would have to be handled with care -
having too many valid names for the same thing would soon become confusing. The
French l10n (LanguageFr.php) has an odd hack hard-coded to make "Wikipedia:"
work in this way; consequently, the Occitan one (LanguageOc.php), which was
copied from it, also has that hack, even though it doesn't really need it and
the existence of such hacks in the distributed software is a potential nuisance
for other users...