Show current version of git, svn and rvm in prompt

gistfile1.sh

# I made this gist to build my shell prompt based in various references on the web
# I will try to list the most of references, but sorry if I not put your here - 
# http://henrik.nyh.se/2008/12/git-dirty-prompt (GIT)

# GIT
function parse_git_dirty {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "*"
}

function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/ \(git: \1$(parse_git_dirty)\)/"
}

# SVN

function parse_svn_dirty {
  [[ $(svn st 2> /dev/null) != "" ]] && echo "*"
}

function parse_svn_revision {
  svn_revision="`svn info 2> /dev/null | grep "Revision:" --color=never | sed -e "s/Revision:/svn:/"`$(parse_svn_dirty)"
  if [ "$svn_revision" != "" ]
  then
    echo " (${svn_revision})"
  fi
  echo 
}

# RVM

function show_current_rvm {
  rvm_version="`~/.rvm/bin/rvm-prompt i v g 2> /dev/null`"
  if [ "$rvm_version" != "" ]
  then
    echo " (rvm: ${rvm_version})"
  fi
}

function proml {
    # Attribute codes:
    # 00=none 01=bold 04=underscore 05=blink 07=reverse 08=concealed
    # Text color codes:
    # 30=black 31=red 32=green 33=yellow 34=blue 35=magenta 36=cyan 37=white
    # Background color codes:
    # 40=black 41=red 42=green 43=yellow 44=blue 45=magenta 46=cyan 47=white
    # \[\e[01;36m\]

   PS1='\[\e]0;\w\a\]\n\[\e[01;33m\]\u\[\e[01;37m\]@\[\e[01;36m\]\h\[\e[01;37m\]\n\[\e[00;33m\]\w\[\e[01;31m\]$(parse_git_branch)\[\e[01;34m\]$(parse_svn_revision)\[\e[01;32m\]$(show_current_rvm)\n\[\033[37m\]$\[\033[00m\] '
    export PS1
}

proml