Trustin's Bash prompt

bash_prompt.sh

#!/bin/bash
# Git-aware bash command prompt
#
# Put this script at $HOME/.bash_prompt and add the following to your .bashrc:
#
#   if [[ -f "$HOME/.bash_prompt" ]]; then
#     if [[ -z "$PROMPT_COMMAND" ]]; then
#       PROMPT_COMMAND="$HOME/.bash_prompt"
#     else
#       PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND ;} $HOME/.bash_prompt"
#     fi
#     if [[ "$EUID" == "0" ]]; then
#       PS1="\n# "
#     else
#       PS1="\n$ "
#     fi
#   fi

# Terminal title
printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/\~}"

# Current user, host name, and working directory
printf "%s@%s:%s" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/\~}"

# Git information
GIT_STATUS="$(git status 2> /dev/null)"
if [[ "$?" == "0" ]]; then
  echo
  # Origin
  GIT_ORIGIN="$(git config remote.origin.url)"
  if [[ ${GIT_ORIGIN} =~ (^[^:]+://[^/]+/([-_a-zA-Z0-9/\.]*)\.git$) ]]; then
    GIT_ORIGIN="${BASH_REMATCH[2]}"
  elif [[ ${GIT_ORIGIN} =~ (^.*:/?([-_a-zA-Z0-9/\.]*)\.git$) ]]; then
    GIT_ORIGIN="${BASH_REMATCH[2]}"
  fi
  if [[ -n "$GIT_ORIGIN" ]]; then
    echo -ne "[git:\033[1;34m${GIT_ORIGIN}\033[0m]"
  else
    echo -n "[git]"
  fi

  # Highlight with a color
  echo -ne "\033[1;32m"

  # Various status
  if [[ ${GIT_STATUS} =~ (^(# *)?On branch ([-_a-zA-Z0-9/\.]*)) ]]; then
    echo -n " ${BASH_REMATCH[3]}"
  fi
  if [[ ${GIT_STATUS} =~ (working (tree|directory) clean) ]]; then
    echo -n " clean"
  else
    echo -n " dirty"
  fi
  if [[ ${GIT_STATUS} =~ (Your branch is ([a-z]*) of ([-_\'a-zA-Z0-9/\.]*) by ([0-9]*) commit) ]]; then
    echo -n " ${BASH_REMATCH[2]}:${BASH_REMATCH[4]}"
  fi
  if [[ ${GIT_STATUS} =~ (Your branch and ([^ ]*) have diverged) ]]; then
    echo -n " diverged"
  fi
  echo -ne "\033[0m"
fi