2014-10-30 12:52 GMT+02:00 Petr Kadlec petr.kadlec@gmail.com:
MediaWiki does normalize the _destination URL_ of the links, but not the displayed text, i.e. the displayed result in your #1 would be equivalent to [[{{ns:Project}}:Help|Project:Help]], i.e. English-language “Project” is always displayed.
I forgot that part, thanks for correcting. -Niklas