Comment 15 for bug 232046

This can be smoothly resolved in the mean time if Firefox is shipped with different defaults, namely to have xdg-open available as an option for all file types (which I believe is possible) and to have every file type which is not to be viewed internally instead opened using /usr/bin/xdg-open.

If possible, have xdg-open named "Default application" or some such in Firefox, so that something like the download method dialog says "Open with [default application]".

I don't know much about Firefox, and I've never looked at its source, but it shouldn't take much effort to implement and the result for end users would be terrific.