#!/bin/sh

wget 'https://projects.archlinux.org/svntogit/packages.git/plain/trunk/PKGBUILD?h=packages/emacs' >/dev/null 2>/dev/null
wget 'https://projects.archlinux.org/svntogit/packages.git/plain/trunk/emacs.install?h=packages/emacs' >/dev/null 2>/dev/null

touch {PKGBUILD,emacs.install}.upstream.new
mv PKGBUILD.upstream.{new,old}
mv emacs.install.upstream.{new,old}
mv 'PKGBUILD?h=packages%2Femacs' PKGBUILD.upstream.new
mv 'emacs.install?h=packages%2Femacs' emacs.install.upstream.new

if [ $? = 0 ]; then
	grep ^pkg < PKGBUILD.upstream.new | md5sum > new-sum
	touch sum
	if [ "$(cat sum)" = "$(cat new-sum)" ]; then
		rm new-sum
	else
		mv new-sum sum
		echo 'emacs-gtk2'
	fi
else
	echo 'emacs-gtk2 (unfetchable)'
fi