.bash_profile

gistfile1.sh

c_path=`tput setaf 6`
c_stgd=`tput setaf 2`
c_unstgd=`tput setaf 9`
c_sgr0=`tput sgr0`
 
parse_git_branch ()
{
  if git rev-parse --git-dir >/dev/null 2>&1
  then
          gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
  else
          return 0
  fi
  echo -e $gitver
}
 
branch_color ()
{
        if git rev-parse --git-dir >/dev/null 2>&1
        then
                color=""
                if git diff --quiet 2>/dev/null >&2 
                then
                        color="${c_stgd}"
                else
                        color="${c_unstgd}"
                fi
        else
                return 0
        fi
        echo -ne $color
}
 
export PS1='[\[$(branch_color)\]$(parse_git_branch)\[${c_sgr0}\]] \u@\[${c_path}\]\w\[${c_sgr0}\]: '

Color codes branch name based on the presence of uncommitted changes