function parse_git_branch {
	ref=$(git symbolic-ref HEAD 2> /dev/null) || return
	echo " @" ${ref#refs/heads/}
}

function count_git_changes {
	out=$(git status --porcelain 2> /dev/null) || return
	git status --porcelain | grep -E "^\ M|\?\?|^ D" | wc -l | awk '{ print " *" $1 " "}'
}

# \h to add the hostname.
PS1="\w\$(parse_git_branch)\$(count_git_changes)\$ "