reproduce procedure 1. name a file "Îñţérñåţîöñåļîžåţîöñ" by copy and paste the text here. 2. go to a form to upload the file 3. the file name sent by safari change from "Îñţérñåţîöñåļîžåţîöñ" to a decomposed form which is not Unicode NFC used on the web. the file name is send out as in Unicode NFD instead of in NFC, you need to add a Unicode normalization NFC code when sending out the file name see http://developer.apple.com/qa/qa2001/qa1235.html http://developer.apple.com/technotes/tn2002/tn2078.html http://twiki.org/cgi-bin/view/Codev/MacOSXFilesystemEncodingWithI18N for details.
Reporter, can you reproduce the problem with a nightly build from <nightly.webkit.org>? I think this has been already fixed.
*** This bug has been marked as a duplicate of 8769 ***