Another interesting post from the forum : http://bbs.archlinux.org/viewtopic.php?id=35901 The documentation of the --ask option is quite funny indeed : --ask number Pre-specify answers to questions. It is doubtful whether this option even works, so I would not recommend using it. TODO: docu- ment this more, as I have no idea how it works or when you would use it, or if we should just dump it. I made an attempt of understanding what this option did, and then documenting it, but I doubt it's clear enough. I'm not sure what should be done here : 1) trying to document this option better 2) trying to implement this feature in a better way 3) just dropping it (not sure that's a good idea, since it's apparently useful in some cases). I think that's also low priority (ie not needed for 3.1), but feel free to comment on this issue.