#!/bin/sh

list_branches() {
	fmt='
		d=%(committerdate:short)
		r=%(refname)
		echo "$d ${r#refs/heads/}"
	'
	t=`git for-each-ref --sort=-committerdate --format="$fmt" refs/heads`
	eval "$t"
}

git update-index --refresh || exit 1

case "$(git diff-index --name-status HEAD)" in
'')	;;
*)
	echo "there are local modifications"
	exit 1
esac

# reset first
git fetch upstream --progress
git reset --hard upstream/trunk

# then merge branches
git fetch origin --progress
git merge --no-edit --no-ff rhe-tools || exit 2
while list_branches && echo -n "> " && read line; do
	echo "merging branch $line"
	while :; do
		if git merge --no-edit --no-ff "$line"; then
			break
		fi
		echo -n "merge failed; press a key to retry"
		read
	done
done