coloured PS1 with git branch, stash indicators

.bashrc

#
# ~/.bashrc
#
export PATH="/usr/lib/colorgcc/bin/:$PATH:/home/jamie/.gem/ruby/2.1.0/bin"
export CCACHE_PATH="/usr/bin"

export WORKON_HOME=$HOME/.virtualenvs
source /usr/bin/virtualenvwrapper_lazy.sh
VBOX_USB=usbfs
# If not running interactively, don't do anything
[[ $- != *i* ]] && return

alias ls='ls --color=auto'
alias userctl="systemctl --user"
source /usr/share/git/git-prompt.sh

#  Customize BASH PS1 prompt to show current GIT repository and branch.
#  by Mike Stewart - http://MediaDoneRight.com

#  SETUP CONSTANTS
#  Bunch-o-predefined colors.  Makes reading code easier than escape sequences.
#  I don't remember where I found this.  o_O

# Reset
Color_Off="\[\033[0m\]"       # Text Reset

# Regular Colors
Black="\[\033[0;30m\]"        # Black
Red="\[\033[0;31m\]"          # Red
Green="\[\033[0;32m\]"        # Green
Yellow="\[\033[0;33m\]"       # Yellow
Blue="\[\033[0;34m\]"         # Blue
Purple="\[\033[0;35m\]"       # Purple
Cyan="\[\033[0;36m\]"         # Cyan
White="\[\033[0;37m\]"        # White

# Bold
BBlack="\[\033[1;30m\]"       # Black
BRed="\[\033[1;31m\]"         # Red
BGreen="\[\033[1;32m\]"       # Green
BYellow="\[\033[1;33m\]"      # Yellow
BBlue="\[\033[1;34m\]"        # Blue
BPurple="\[\033[1;35m\]"      # Purple
BCyan="\[\033[1;36m\]"        # Cyan
BWhite="\[\033[1;37m\]"       # White

# Underline
UBlack="\[\033[4;30m\]"       # Black
URed="\[\033[4;31m\]"         # Red
UGreen="\[\033[4;32m\]"       # Green
UYellow="\[\033[4;33m\]"      # Yellow
UBlue="\[\033[4;34m\]"        # Blue
UPurple="\[\033[4;35m\]"      # Purple
UCyan="\[\033[4;36m\]"        # Cyan
UWhite="\[\033[4;37m\]"       # White

# Background
On_Black="\[\033[40m\]"       # Black
On_Red="\[\033[41m\]"         # Red
On_Green="\[\033[42m\]"       # Green
On_Yellow="\[\033[43m\]"      # Yellow
On_Blue="\[\033[44m\]"        # Blue
On_Purple="\[\033[45m\]"      # Purple
On_Cyan="\[\033[46m\]"        # Cyan
On_White="\[\033[47m\]"       # White

# High Intensty
IBlack="\[\033[0;90m\]"       # Black
IRed="\[\033[0;91m\]"         # Red
IGreen="\[\033[0;92m\]"       # Green
IYellow="\[\033[0;93m\]"      # Yellow
IBlue="\[\033[0;94m\]"        # Blue
IPurple="\[\033[0;95m\]"      # Purple
ICyan="\[\033[0;96m\]"        # Cyan
IWhite="\[\033[0;97m\]"       # White

# Bold High Intensty
BIBlack="\[\033[1;90m\]"      # Black
BIRed="\[\033[1;91m\]"        # Red
BIGreen="\[\033[1;92m\]"      # Green
BIYellow="\[\033[1;93m\]"     # Yellow
BIBlue="\[\033[1;94m\]"       # Blue
BIPurple="\[\033[1;95m\]"     # Purple
BICyan="\[\033[1;96m\]"       # Cyan
BIWhite="\[\033[1;97m\]"      # White

# High Intensty backgrounds
On_IBlack="\[\033[0;100m\]"   # Black
On_IRed="\[\033[0;101m\]"     # Red
On_IGreen="\[\033[0;102m\]"   # Green
On_IYellow="\[\033[0;103m\]"  # Yellow
On_IBlue="\[\033[0;104m\]"    # Blue
On_IPurple="\[\033[10;95m\]"  # Purple
On_ICyan="\[\033[0;106m\]"    # Cyan
On_IWhite="\[\033[0;107m\]"   # White

# Various variables you might want for your PS1 prompt instead
Time12h="\T"
Time12a="\@"
PathShort="\w"
PathFull="\W"
NewLine="\n"
Jobs="\j"


# This PS1 snippet was adopted from code for MAC/BSD I saw from: http://allancraig.net/index.php?option=com_content&view=article&id=108:ps1-export-command-for-git&catid=45:general&Itemid=96
# I tweaked it to work on UBUNTU 11.04 & 11.10 plus made it mo' better
# $IBlack$Time12h$Color_Off # this looks sweet.

export PS1='$(git branch &>/dev/null;\
if [ $? -eq 0 ]; then \
  echo "'$Yellow$PathShort$Color_Off'$(
    echo -n " "; \
    echo `git stash show 2>&1` | grep "No stash found." > /dev/null 2>&1; \
  if [ "$?" -ne "0" ]; then \
    # Something on the stash
    n_lines=$(git stash list 2> /dev/null | wc --lines); \
    for (( c=0; c<n_lines; c++ ))
    do
      echo -n "'$IRed'"$(__git_ps1 "*"'$Color_Off'); \
    done; \
  fi; \
    echo `git status 2>&1` | grep "nothing to commit" > /dev/null 2>&1; \
  if [ "$?" -eq "0" ]; then \
    # @4 - Clean repository - nothing to commit
    echo "'$Green'"$(__git_ps1 "(%s)"'$Color_Off'); \
  else \
    # @5 - Changes to working tree
    echo "'$IRed'"$(__git_ps1 "{%s}"'$Color_Off'); \
  fi) -> "; \
else \
  # @2 - Prompt when not in GIT repo
  echo "'$Yellow$PathShort$Color_Off' -> "; \
fi)'