Crazy Alex reports that the Firefox MAFF format does _not_ support indexing into remote jar files using the "jar" scheme, so a URL like
jar:http://www.foo.com/bar/baz.jar!/index.html won't work:
I tried to use jar: prefix, but with no success. Firefox geves download dialog or writes an error stating ”Unsafe File Type. The page you are trying to view cannot be shown because it is contained in a file type that may not be safe to open. Please contact the website owners to inform them of this problem.”
The reason I'm blogging about this hopelessly obscure technical point is that the Apple format for digital music packaging, the ePub and MOBI formats for ebooks, and many other ad hoc formats are exploring this same space of multi-file archives. MAFF is a candidate for an open and common implementation.