Bug#613039: Wishlist, file-roller rocks: please could you support ISO and CCD format ?

[Simon Wiles 魏希明]

ISO support is broken in file-roller on my system -- however, it works
under Ubuntu...

I have a collection of ISOs about which p7zip (via file-roller)
complains "Can not open file as archive".

When I look at the `depends` for file-roller from Wheezy, I see
p7zip-full is marked as a dependency, but under Ubuntu it's optional,
and not, it seems, default. Under Ubuntu file-roller seems to be
depending on `isoinfo` to open and extract ISOs. (Note: when I install
`p7zip-full` in a Ubuntu Lucid system, file-roller there too uses 7zip
in preference to `isoinfo`, and fails accordingly with the same error).

Should `p7zip-full` be capable of opening these files (in which case, is
there some kind of bug in the package in the Debian and Ubuntu repos)?
Is there a way I can make `file-roller` use `isoinfo` in preference?
Shouldn't it be doing so anyway, if `p7zip` is failing?