I have been trying to repro with a small nodejs server but either the server cut off the content-disposition filename or firefox truncates it. When I get that in the wild I'll post an update.

In the meantime:

    $ touch 1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
    touch: impossible de faire un touch '1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111': Nom de fichier trop long

https://serverfault.com/questions/9546/filename-length-limit... 255 bytes it is then.

Firefox cut off at ~217, httpie at 255.

But it's _per file name_. The path could be waaay longer than Windows' one

Ah, my bad. I thought we were still talking filenames, not paths.

Probably my mistake. You only discussed about file names and I threw in the path thing :)