[whatwg] multipart/form-data filename encoding: unicode and special characters

Evan Jones evanj at csail.mit.edu
Wed May 2 10:26:45 PDT 2012

On May 2, 2012, at 7:43 , Julian Reschke wrote:
> If browser implementers want to try something new that will not affect the old code paths, supporting the encoding defined in RFC 5987 might be the right thing to do (yes, it's ugly, but it's unambiguous).

It seems to me like that is a potential solution that could be evaluated. It would be nice to have both the HTTP response header and the POST form encoding be the same. However, a critical question is if the server software that parses the form headers would do the "right thing" if it sees both an ASCII fallback filename= and an escaped filename*= parameter in the Content-Disposition header. Without looking at any code, I suspect some will and some won't.

My conclusion: I would be willing to help with bugs, testing, test cases, looking at server code, etc related to this issue. However, I believe someone who is experienced with the technology and politics of web standards to really champion any change because I don't fully understand the processes or the issues. If I don't hear anything in a few days, I'll try filing some additional bugs with Webkit, Firefox, and the HTML5 spec and otherwise give up.


Evan Jones


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