Hi! It'd be better if xarchiver uses the stock icons or themed icons instead of its own (add, add_button, extract, extract_button).
I agree with you there, but the freedesktop.org icon naming specifications do not provide icons for the 'extract' action. For add and remove the 'list-add' and 'list-remove' icons can be used. But this would result in a weird looking GUI because there is no corresponding 'extract' icon, which we would still have to use our own icon for that.
Bug closed as invalid.