Show prompt for Git & Mercurial

if [ -f $(brew --prefix)/etc/bash_completion ]; then
    . $(brew --prefix)/etc/bash_completion
fi
source /usr/local/Cellar/git/1.8.2.3/etc/bash_completion.d/git-completion.bash
source /usr/local/Cellar/git/1.8.2.3/etc/bash_completion.d/git-prompt.sh
#GIT_PS1_SHOWDIRTYSTATE=true
#export PS1='\[\033[32m\]\u@\h\[\033[00m\]:\[\033[34m\]\w\[\033[31m\]$(__git_ps1)\[\033[00m\]\$ '

hg_branch() {
        hg branch 2> /dev/null | awk '{print " (hg:"$1""}'
}
hg_rev() {
        hg parents --template "r{rev}\n" 2> /dev/null | awk '{print " "$1")"}'
}

git_branch() {
        git branch 2>/dev/null | awk '/^\*/ {print " " " (git:" $2 ")"}'
}
export PS1="\[\033[32m\]\u@\h\[\033[00m\]:\[\033[34m\]\w\[\033[00m\]\[\033[0;36m\]\$(git_branch)\$(hg_branch)\$(hg_rev)\[\033[0m\] \$ "

See:
http://d.hatena.ne.jp/CortYuming/20121006/p2