post_upgrade() {
    printf "$(tput bold)$(tput setaf 3)IMPORTANT: MIME types are NOT registered automatically$(tput sgr0)\n"
    printf "$(tput bold)$(tput setaf 3)postinst from debian package: $(tput sgr0)\n"
    printf "$(tput bold)$(tput setaf 3)xdg-mime default /usr/share/applications/alfaview.desktop x-scheme-handler/alfaview\nxdg-mime default /usr/share/applications/alfaview.desktop x-scheme-handler/alfatraining$(tput sgr0)\n"
}

post_install() {
    post_upgrade
}