When I upload a file onto mediawiki with Special Characters in the name it mangles the filename into something that looks like this:
Waterford_(Dáil_Éireann_constituency).png
when it actually writes it to the file when it should actually look like this:
Waterford_(Dáil_Éireann_constituency).png
Which means that when another page links to that file it comes up as a broken image link because it's looking for
http://mysite.com/wiki/images/Waterford_(Dáil_Éireann_constituency).png
I don't want to prevent people from using special characters as often they copy the files from wikipedia which supports special characters, and I think it's something to do with the way my host handles files. So it would be preferable if there was some way to intercept the way that mediawiki creates the files so that the filepath would be free from special characters while all the references would still work.