Description: With UTF-8 enabled a wiki link with text after the brackets what contains a special character breaks:
[[this is a]]-täst
You can mask wikilinks as workaround:
[[this is a|this is a-täst]]
Definitely a pain. It's also not possible to make non-ASCII internal links. This looks terrible in my language: removing the accents destroys the meaning of the words. :( (Clytie)
For the first problem, I need an example link (on pmwiki.org, probably in the UTF8 group) that demonstrates the problem.
For the second problem -- it's possible to have non-ASCII internal links; the question is one of what happens to the pagename. Again, examples help here.
I've now fixed this issue for 2.0.6. -- Pm