show git branch and dirty state in bash

gistfile1.eclass

# ANSI color codes
RS="\[\033[0m\]"    # reset
HC="\[\033[1m\]"    # hicolor
UL="\[\033[4m\]"    # underline
INV="\[\033[7m\]"   # inverse background and foreground

FBLK="\[\033[30m\]" # foreground black
FRED="\[\033[31m\]" # foreground red
FGRN="\[\033[32m\]" # foreground green
FYEL="\[\033[33m\]" # foreground yellow
FBLE="\[\033[34m\]" # foreground blue
FMAG="\[\033[35m\]" # foreground magenta
FCYN="\[\033[36m\]" # foreground cyan
FWHT="\[\033[37m\]" # foreground white

export GIT_PS1_SHOWDIRTYSTATE=1

PS1="$HC$FYEL[ $FGRN${debian_chroot:+($debian_chroot)}\u$FYEL: $FMAG\w$FCYN"'$(__git_ps1 " (%s)")'"$FYEL]\n\\$ $RS"
PS2="$HC$FYEL> $RS"