I have created a blog for a Thai client and she made a page with a title in Thai characters. When I view the page I see the the link to the page with Thai characters representing the page in my browser like domain.com/ไม่เป็นไร. So it sort of seems to work. NB The link behind is very long and ugly.
My question is, do pretty permalinks with non latin characters work and do search engines handle them well or do they just see a link like: http://domain.com/%E0%B9%84%E0%B8%A1%E0%B9%88%E0%B9%80%E0%B8%9B%E0%B9%87%E0%B8%99%E0%B9%84%E0%B8%A3/ ? In that case pretty urls with non latin characters are not useful. I am afraid that that is the case, but I would like to get a confirmation to be sure...