info_dir=/usr/share/info

post_install() {
    install-info ${info_dir}/sawfish.info.gz ${info_dir}/dir 
}

post_upgrade() {
  post_install $1
}

pre_remove() {
    install-info --delete ${info_dir}/sawfish.info.gz ${info_dir}/dir 
}

op=$1
shift
$op $*