Git PS1 script.sh

__git_ps1() {
	if [ "$(git status -s 2>&1 1>/dev/null)" ]; then
		return
	fi
	local nn=$(git status -s 2>/dev/null | grep "??" | sed -n '$=')
	local nc=$(git status -s 2>/dev/null | grep M | sed -n '$=')
	local branch=$(git branch 2>/dev/null | grep "*" | sed 's/^* //')
	nn=$nn
	nc=$nc

	local msg=""
	local color=""
	local uncolor=`echo -e "\033[0m"`

	if [ $(git diff --name-only HEAD origin/$branch 2>/dev/null | sed -n '$=') ]; then
		color=`echo -e "\033[1;31m>>"`
	elif [ $(git status | grep -i "your branch is behind 'origin/") ]; then
		color=`echo -e "\033[0;31m<<"`
	else
		color=`echo -e "\033[1;32m"`
	fi

	if [ $nc ]; then
		msg=$msg"-"$nc"c"
	fi
	if [ $nn ]; then
		if [ $msg ]; then
			msg=$msg","$nn"n"
		else
			msg=$msg"-"$nn"n"
		fi
	fi

	echo -e "($color$branch$uncolor$msg)"
}

export PS1='[\u \w$(__git_ps1)]\$ '