#!/bin/bash
# Helper to rewrite all local branches.

rb_one() {
	local b=$1

	printf "### ${b}"
	if ! git config --local "branch.${b}.merge" >/dev/null; then
		echo " -> skipping due to missing merge branch"
	else
		echo
		git checkout -q "${b}" || exit
		if ! git rebase ; then
			git rebase --abort
		fi
	fi
}

usage() {
	cat <<EOF
Usage: rb-all
EOF
	exit 1
}

main() {
	if [[ $# -ne 0 ]] ; then
		usage
	fi

	local orig b branches
	orig=$(git rev-parse --abbrev-ref HEAD) || return

	branches=( $(git ls-remote --heads . | sed 's:.*refs/heads/::') )
	for b in "${branches[@]}" ; do
		rb_one "${b}"
	done

	git checkout -q "${orig}"
}
main "$@"