underline/recognize url's with uncommon characters sets (aka full unicode)
http://hy.wikipedia.org/wiki/Գլխավոր_Էջ (armenian)
http://th.wikipedia.org/wiki/ภาษาจอร์เจีย (thai)
Paste these urls into a chatdialog and see how they do not get fully underlined. Therefor you cannot click them. If you want to go to that website you have manually copy and paste them. Gajim should probably make everything from 'http://' to ' ' underlined, regardless of other characters.