bash git prompt

gistfile1.txt

# set a fancy prompt
__gitps1 ()  { 
  local b="$(__git_ps1)"
  if [ -n "$b" ]
  then
    local c=$(git log @{u}.. --oneline 2>/dev/null | wc -l)
    if [ "$c" -gt 0 ]
    then
      printf "%s^%d" "${b##refs/heads/}" "$c"
    else
      local c=$(git log ..@{u} --oneline 2>/dev/null | wc -l)
      if [ "$c" -gt 0 ]
      then
        printf "%sv%d" "${b##refs/heads/}" "$c"
      else
        printf "%s" "${b##refs/heads/}"
      fi
    fi
  fi
}
#PS1='\n\u@\h: \w$(__gitps1 "(%s)")\n[\!] '
PS1='\n\[\033[01;34m\]\u@\h\[\033[00m\]: \w$(__gitps1 "(%s)")\n[\!] '