Handle escape sequences when expanding desktop entries
@Tamaranch @ochosi, this is follow-up of !2 (merged) (I think), partially implements what's described in the spec and fixes xfce4-appfinder#8 (closed).
@Tamaranch @ochosi, this is follow-up of !2 (merged) (I think), partially implements what's described in the spec and fixes xfce4-appfinder#8 (closed).