gistfile1.txt

# ps1
if true; then
   OFF="\[\033[0m\]"
   BLACK="\[\033[0;30m\]"
   RED="\[\033[0;31m\]"
   GREEN="\[\033[0;32m\]"
   YELLOW="\[\033[0;33m\]"
   BLUE="\[\033[0;34m\]"
   MAGENTA="\[\033[0;35m\]"
   CYAN="\[\033[0;36m\]"
   WHITE="\[\033[0;37m\]"
   BOLD="\[\033[1m\]"
else
   OFF=""
   BLACK=""
   RED=""
   GREEN=""
   YELLOW=""
   BLUE=""
   MAGENTA=""
   CYAN=""
   WHITE=""
   BOLD=""
fi

# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
# returns text to add to bash PS1 prompt (includes branch name)
__git_ps1 ()
{
	local g="$(git rev-parse --git-dir 2>/dev/null)"
	if [ -n "$g" ]; then
		local r
		local b
		if [ -d "$g/rebase-apply" ]
		then
			if test -f "$g/rebase-apply/rebasing"
			then
				r="|REBASE"
			elif test -f "$g/rebase-apply/applying"
			then
				r="|AM"
			else
				r="|AM/REBASE"
			fi
			b="$(git symbolic-ref HEAD 2>/dev/null)"
		elif [ -f "$g/rebase-merge/interactive" ]
		then
			r="|REBASE-i"
			b="$(cat "$g/rebase-merge/head-name")"
		elif [ -d "$g/rebase-merge" ]
		then
			r="|REBASE-m"
			b="$(cat "$g/rebase-merge/head-name")"
		elif [ -f "$g/MERGE_HEAD" ]
		then
			r="|MERGING"
			b="$(git symbolic-ref HEAD 2>/dev/null)"
		else
			if [ -f "$g/BISECT_LOG" ]
			then
				r="|BISECTING"
			fi
			if ! b="$(git symbolic-ref HEAD 2>/dev/null)"
			then
				if ! b="$(git describe --exact-match HEAD 2>/dev/null)"
				then
					b="$(cut -c1-7 "$g/HEAD")..."
				fi
			fi
		fi
 
		local w
		local i
 
		if test -n "$GIT_PS1_SHOWDIRTYSTATE"; then
			if test "$(git config --bool bash.showDirtyState)" != "false"; then
				git diff --no-ext-diff --ignore-submodules \
					--quiet --exit-code || w="*"
				if git rev-parse --quiet --verify HEAD >/dev/null; then
					git diff-index --cached --quiet \
						--ignore-submodules HEAD -- || i="+"
				else
					i="#"
				fi
			fi
		fi
 
		if [ -n "${1-}" ]; then
			printf "$1" "${b##refs/heads/}$w$i$r"
		else
			printf " (%s)" "${b##refs/heads/}$w$i$r"
		fi
	fi
}

three_dirs() {
    output=""
    dirname="$PWD"
    for i in {1..3}; do
        dir=$(basename "$dirname")
        dirname=$(dirname "$dirname")
        if [ ! "$dir" = "/" ]; then
            output="${output}$(echo ${dir}/ | rev | tr -d '\n')"
        else
            break
        fi
    done
    if [ "$dirname" = "/" ]; then
        output="${output}/"
    fi

    echo "$output" | rev | tr -d '\n'
}

promptcommand() {
   status=$?

   ps_pwd="${CYAN}$(three_dirs)${OFF}"

   ps_gitbranch=""
   ps_stash_depth=""
   branch=$(__git_ps1)
   if [ "$branch" ]; then
       ps_gitbranch="${MAGENTA}$branch${OFF}"

       stash_depth=$(git stash list | wc -l | grep -o -E '[0-9]+')
       ps_stash_depth=""
       if [ "$stash_depth" -ne "0" ]; then
           ps_stash_depth="${RED}[${stash_depth}]${OFF}"
       fi
   fi

   ps_prompt="\$"
   if [ "$status" -ne "0" ]; then
       ps_prompt="${RED}${ps_prompt}${OFF}"
   fi

   PS1="${GREEN}\u${OFF} ${ps_pwd}${ps_gitbranch}${ps_stash_depth} ${ps_prompt} "
}
PROMPT_COMMAND=promptcommand