Bash Prompt with git and virtualenv (2 lines)

bashrc-git+virtualenv

case "$TERM" in
xterm*|screen)

  # last command status ($?) shown as tick/cross and color
  ok="\[\033[01;32m\]\342\234\223"
  notok="\[\033[01;31m\]\342\234\227"
  cmdresult="\$([[ \$? == 0 ]] && echo \"$ok\" || echo \"$notok\")"
  
  # git current branch
  git="\$( git branch 2> /dev/null | sed -n '/\\* /s///;s/^/ [/;s/$/]/p' )"
  
  # virtualenv
  virtualenv="\${VIRTUAL_ENV+\" (\$(basename \$VIRTUAL_ENV))\"}"
  export VIRTUAL_ENV_DISABLE_PROMPT=1

  # put only prompt on 2nd line
  ln1="\[\033[01;37m\]\342\225\255 $cmdresult$virtualenv$git \u@\h:\w"
  ln2="\[\033[01;37m\]\342\225\260 \$ "

  PS1="${ln1}\n${ln2}\[\033[00m\]"

  unset ok notok cmdresult ln1 ln2 git virtualenv
esac