Custom Prompt String One for Git Repo Information

.bashrc

function git_num_untracked_files {
    expr `git status --porcelain 2>/dev/null| grep "^??" | wc -l`
}
function git_num_staged_new_files {
    expr `git status --porcelain 2>/dev/null| grep "^A" | wc -l`
}
function git_num_staged_modified_files {
    expr `git status --porcelain 2>/dev/null| grep "^M" | wc -l`
}
function git_num_unstaged_files {
    expr `git status --porcelain 2>/dev/null| grep "^ M" | wc -l`
}

function parse_git_dirty {
    dirty=`[[ $(git status 2> /dev/null | tail -n1) != "nothing to commit, working directory clean" ]] && echo "*"`
#   echo -en $dirty
    if [ -z "$dirty" ]; then
        echo ""
    else
        echo -en " "\
"\e[1;37m"$(git_num_untracked_files)"\e[0m"\
":"\
"\e[1;31m"$(git_num_unstaged_files)"\e[0m"\
":"\
"\e[1;32m"$(git_num_staged_modified_files)"\e[0m"\
":"\
"\e[1;36m"$(git_num_staged_new_files)"\e[0m"\
" "
    fi
}
function parse_git_branch {
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/ [\1]$(parse_git_dirty)/"
}

export PS1='\[\e[1;31m\]\u@\h\[\e[0m\] \[\e[1;33m\]\w\[\e[0m\]\[$(parse_git_branch)\]$ '

# List Branch Owners by Date
alias gitwho="git remote prune origin && echo -e 'Committed Date\t\t\t Last Committer\t\t Branch\n------------------------------------------------------------------------------' && git for-each-ref --format='%(committerdate) %09 %(authorname) %09 %(refname)' | sort -k5n -k2M -k3n -k4n | grep -v 'tags' | grep -v 'stash' | grep -v 'heads'"