rc.sh

function git_branch {
  git branch --no-color 2> /dev/null | egrep '^\*' | sed -e 's/^* //'
}

function git_dirty {
  # only tracks modifications, not unknown files needing adds
    if [ -z "`git status -s | awk '{print $1}' | grep '[ADMTU]'`" ] ; then
        return 1
    else
        return 0
    fi
}

function dirty_git_prompt {
    branch=`git_branch`
    if [ -z "${branch}" ] ; then
        return
    fi
    git_dirty && echo " (${branch})"
}

function clean_git_prompt {
    branch=`git_branch`
    if [ -z "${branch}" ] ; then
        return
    fi
    git_dirty || echo " (${branch})"
}

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\[\033[01;31m\]$(dirty_git_prompt)\[\033[01;32m\]$(clean_git_prompt)\[\033[00m\]\$ '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w $(git_branch)\$ '
fi