update_tags() {
    echo -n "Updating vim help tags... "
    /usr/bin/vim --noplugins -u NONE -U NONE \
        --cmd ":helptags /usr/share/vim/vimfiles/doc" \
        --cmd ":q" > /dev/null 2>&1
    echo "done."
}

post_install() {
    update_tags
    echo
    echo '-> To run type "vim -c NotMuch"'
}

post_upgrade() {
    update_tags
}

post_remove() {
    update_tags
}