post_install() {
  install-info usr/share/info/xboard.info.gz usr/share/info/dir 2>/dev/null
}

post_upgrade() {
  post_install
}

pre_remove() {
  install-info --delete usr/share/info/xboard.info.gz usr/share/info/dir 2>/dev/null
}

op=$1
shift
$op $*