See https://bugzilla.gnome.org/show_bug.cgi?id=707568
Fixed this in 3.8.4-r1 because it was annoying enough, and submitted the patch upstream. +*file-roller-3.8.4-r1 (09 Sep 2013) + + 09 Sep 2013; Alexandre Rostovtsev <tetromino@gentoo.org> + +file-roller-3.8.4-r1.ebuild, +files/file-roller-3.8.4-rar-5.patch: + Add support for rar-5 and unrar-5 (bug #483722).