Supercool bash prompt with rvm and git integration

.bashrc

#  This allows us to use __git_ps1
# Get it from https://raw.githubusercontent.com/git/git/master/contrib/completion/git-prompt.sh
source ~/git-prompt.sh

# Reset
Color_Off="\[\033[0m\]"       # Text Reset
Green="\[\033[0;32m\]"        # Green
IBlue="\[\033[0;94m\]"        # Blue
IRed="\[\033[0;91m\]"         # Red
Yellow="\[\033[0;33m\]"       # Yellow
BYellow="\[\033[1;33m\]"      # Yellow

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

#  Defining rvm display
function __my_rvm_ruby_version {
  local gemset=$(echo $GEM_HOME | awk -F'@' '{print $2}')
  [ "$gemset" != "" ] && gemset="@$gemset"
  local version=$(echo $MY_RUBY_HOME | awk -F'-' '{print $2}')
  [ "$version" == "1.8.7" ] && version=""
  local full="$version$gemset"
  [ "$full" != "" ] && echo "$full"
}

#  Defining the whole whole prompt with git branch/status
export PS1=$IBlue'$(__my_rvm_ruby_version)'$Color_Off'$(git branch &>/dev/null;\
if [ $? -eq 0 ]; then \
  echo "$(echo `git status` | grep "nothing to commit" > /dev/null 2>&1; \
  if [ "$?" -eq "0" ]; then \
    # @4 - Clean repository - nothing to commit
    echo "'$Green'"$(__git_ps1 " (%s)"); \
  else \
    # @5 - Changes to working tree
    echo "'$IRed'"$(__git_ps1 " {%s}"); \
  fi) '$BYellow$PathShort$Color_Off'\$ "; \
else \
  # @2 - Prompt when not in GIT repo
  echo " '$Yellow$PathShort$Color_Off'\$ "; \
fi)'