oh, let me try!
b0at: your method can only solve my problem partially. First, I can now open PDF using applications other than the default evince, but the "(default)" still come after "Use evince", it should be after "Use mudpf"! Second, now when I open a url to a PDF file, Firefox will download it in to /tmp, and then open it with mupdf. I want to preview it in Firefox first, then download, and maybe click it in the dow
nload file list, hoping it can be open by an application that I can control.
And...now I come accros a new problem, there are two "download list":the download list when I click the icon and the full download list when I then click "show all downloads", and when I click on a file, they handle it differently, the former will use a external application, while the latter will preview the file in Firefox
Isn't the logic behind Firefox's file handle actions too obscure?