ox-it/wl-kernel — pull request #24 by bdvholmes (2013-11-12 15:44:26+00:00)
Title: WL-2194 Encode UTF-8 in Content Disposition correctly

UTF-8 encoding and fallback ISO-8859-1 encoding should be provided.

E.g. Content-Disposition: attachment;
filename="foo-ae.html";
filename*=UTF-8''foo-%c3%a4.html

See http://greenbytes.de/tech/tc2231/#encoding-2231-fb