Git or Mecurial Info on Bash Prompt

gistfile1.sh

# Colors to use for prompts
DARK_GREY="\e[30;1m"
LIGHT_BLUE="\e[34;1m"
RESET_COLORS="\e[0m"

# Use git completion only if git is available on system
if [ -f ~/.git-completion.bash ] && [ -f `which git` ]; then
    source ~/.git-completion.bash

    # Include git info in prompt
    export GIT_PROMPT='$(__git_ps1 "\[${DARK_GREY}\](\[${LIGHT_BLUE}\]%s\[${DARK_GREY}\])")'
fi

# Include Mecurial prompt if available
if [ ! -z $(which hg 2>/dev/null) ]; then
    hg prompt --help 2>/dev/null >/dev/null
    if [ $? -eq 0 ]; then
        __hg_ps1() {
            hg prompt $(printf "$1") 2> /dev/null
        }

        export HG_PROMPT='$(__hg_ps1 "\[${DARK_GREY}\](\[${LIGHT_BLUE}\]{branch}\[${DARK_GREY}\])[\[${LIGHT_BLUE}\]{status}\[${DARK_GREY}\]]")' 2> /dev/null
    fi
fi

# Set up prompt including Git and Hg prompt components if available
# Use \[ \] around colors or cursor gets screwy
export PS1="\n\[${DARK_GREY}\](\[${LIGHT_BLUE}\]\u@\h\[${DARK_GREY}\])-(\[${LIGHT_BLUE}\]\w\[${DARK_GREY}\])\n\[${RESET_COLORS}\]${GIT_PROMPT}${HG_PROMPT}\[${DARK_GREY}\](\[${LIGHT_BLUE}\]! \!\[${DARK_GREY}\])-> \[${RESET_COLORS}\]"