#!/bin/sh
# Preparation
set -e
SHELL="${SHELL:-/bin/sh}"

# Stash whatever is needed
# Record if we stashed or not
before=$(git stash list | wc -l)
git stash --all --quiet
after=$(git stash list | wc -l)
unstash=$((after-before))

# Rebase the current branch first
current_branch="$(git symbolic-ref --short HEAD)"
if git rev-parse '@{u}' >/dev/null 2>&1 ; then
	git rebase "$@" '@{u}' ||
	"$SHELL" -i < /dev/tty ||
	true
	[ ! -d .git/rebase-apply/ ] ||
	git rebase --abort
fi

# Rebase the other branches
git branch | grep -v github | tr -d '* ' | while read -r b ; do
	if [ "x$b" != "x$current_branch" ] ; then
		if git rev-parse "$b@{u}" >/dev/null 2>&1 ; then
			git checkout "$b"
			git rebase "$@" '@{u}' ||
			"$SHELL" -i < /dev/tty ||
			true
			[ ! -d .git/rebase-apply/ ] ||
			git rebase --abort
		fi
	fi
done

# Back to the original branch
git checkout "$current_branch"

# Restore the working dir if needed
test $unstash -le 0 ||
git stash pop --quiet