Tweaked to do relative dirs in git repos

gistfile1.eclass

alias git=hub
alias g='git'
alias go='git checkout'
alias irc='ssh glu.ttono.us'
alias clj='java jline.ConsoleRunner clojure.main'
alias la='ls -a'
alias ll='ls -alF'

export EDITOR='mvim -f'
export PATH="/Users/$(whoami)/bin:/usr/local/bin:/opt/local/bin:/opt/local/sbin:/opt/local/lib/postgresql83/bin:$PATH"

export P4CONFIG=.p4config
export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home
export CLASSPATH="/Users/kev/code/jars/*:/opt/jars/*"
export OOC_DIST=/Users/kev/code/ooc

# Initialize the 'hop' script
source /Users/$(whoami)/twisted_env/bin/../hop/hop.bash

        RED="\[\033[0;31m\]"
     YELLOW="\[\033[0;33m\]"
    GREEN="\[\033[0;32m\]"
       BLUE="\[\033[0;34m\]"
  LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
      WHITE="\[\033[1;37m\]"
 LIGHT_GRAY="\[\033[0;37m\]"
 COLOR_NONE="\[\e[0m\]"

function parse_git_branch {

  git rev-parse --git-dir &> /dev/null
  git_status="$(git status 2> /dev/null)"
  branch_pattern="^# On branch ([^${IFS}]*)"
  remote_pattern="# Your branch is (.*) of"
  diverge_pattern="# Your branch and (.*) have diverged"
  if [[ ! ${git_status} =~ "working directory clean" ]]; then
    state="${RED}⚡"
  fi
  # add an else if or two here if you want to get more specific
  if [[ ${git_status} =~ ${remote_pattern} ]]; then
    if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
      remote="${YELLOW}↑"
    else
      remote="${YELLOW}↓"
    fi
  fi
  if [[ ${git_status} =~ ${diverge_pattern} ]]; then
    remote="${YELLOW}↕"
  fi
  if [[ ${git_status} =~ ${branch_pattern} ]]; then
    branch=${BASH_REMATCH[1]}
    echo " (${branch})${remote}${state}"
  fi
}

function parse_wd {
  repodir="$(git rev-parse --show-toplevel 2> /dev/null)"
  previous_return_value=$?;
  cwd="$(pwd)"
  if test $previous_return_value -eq 0; then
    if [[ ! ${repodir} == ${cwd} ]]; then 
      relativedir="$(ruby -e 'puts ARGV[1].split(ARGV[0])[1]' $repodir $cwd)"
      echo $YELLOW$(basename $repodir) $COLOR_NONE$relativedir
    else
      echo $YELLOW$(basename $repodir)
    fi
  else
    echo $RED$cwd
  fi
}

function prompt_func() {
    previous_return_value=$?;
    # prompt="${TITLEBAR}$BLUE[$RED\w$GREEN$(__git_ps1)$YELLOW$(git_dirty_flag)$BLUE]$COLOR_NONE "
    prompt="${TITLEBAR}${BLUE}[${COLOR_NONE}$(parse_wd)${GREEN}$(parse_git_branch)${BLUE}]${COLOR_NONE} "
    if test $previous_return_value -eq 0
    then
        PS1="${prompt}➔ "
    else
        PS1="${prompt}${RED}➔${COLOR_NONE} "
    fi
}

PROMPT_COMMAND=prompt_func

See screenshot at https://skitch.com/kevinclark/rph2a/indexing-bash-80x24

Adds yellow for current repo with white for relative dir OR red for a non-git repo