#!/bin/bash
version=$(sed -rn '/^Version:[[:space:]]+/{s/^Version:[[:space:]]+([0-9]+\.[0-9]+)(\.[0-9+])?/\1/p}' ncurses.spec) || exit 1
test -e ncurses-${version}-patches.tar.bz2 || exit 1
OFS="$IFS"
IFS=-
last=($(tar -tf ncurses-${version}-patches.tar.bz2 | sed -r 's@\.patch$@@'| sort -t '-' -k 3,3 -n | tail -n 1))
IFS="$OFS"
patch=${last[2]}
sed -ri "/^%define[[:space:]]+patchlvl/{ s/(^%define[[:space:]]+patchlvl)[[:space:]]+.*/\1 ${patch}/ }" ncurses.spec