Possible Duplicate:
URL detecting error with address like “http://en.wikipedia.org/wiki/Octet_(computing)”
If a link ends with a closing bracket, the auto-generated link doesn't work. This is mainly an issue for including links to Wikipedia articles.
Example: http://en.wikipedia.org/wiki/Dagger_(typography) The link is broken, because the closing bracket is missing from the URL.
If, on the other hand, the link contains brackets but doesn't end in them, the links works fine: http://en.wikipedia.org/wiki/Dagger_(typography)#History
My apologies if this is a duplicate! I did search, but couldn't find anything relevant. If it can't be fixed (the problem is a little more nuanced than I immediately realised), I'm still interested in having a good answer and simple solution should I come across the problem again.
%29
was offered as a workaround, it seems an unreasonable expectation for the less programmer-y sites.