Add colored status to your bash prompt while in a Mercurial repo.

gistfile1.sh

# Define a few colors for later use.  The escaped brackets tell bash that they
# are non-printable and keep word-wrapping sane.

TXT_RED='\['`tput setaf 1`'\]'
TXT_GREEN='\['`tput setaf 2`'\]'
TXT_RESET='\['`tput sgr0`'\]'

# Build a prompt decorator if we're in a hg repo.  The branch name is included
# in green if the branch is default, red otherwise.  A symbol appears if the
# working directory is not clean.  This uses Steve Losh's excellent hg-prompt
# to get all the state with one Python init: http://bitbucket.org/sjl/hg-prompt

function parse_hg_branch {
    
    hg_prompt_decorator=""
    hg_info=`hg prompt "{root};{branch};{status}" 2> /dev/null`
    pattern="^(.*);(.*);(.*)$"
    
    if [[ ${hg_info} =~ ${pattern} ]]; then
        
        root="${BASH_REMATCH[1]}"
        branch="${BASH_REMATCH[2]}"
        status="${BASH_REMATCH[3]}"
        color=${TXT_RED}
    
        if [[ ${branch} == "default" ]]; then
            color=${TXT_GREEN}
        fi
    
        hg_prompt_decorator="[${color}${branch}${TXT_RESET}${status}] "
    fi
}

# Set up a function that is run every time the shell prompt is generated.

function set_shell_prompt {
    parse_hg_branch
    PS1="\h:\W "${hg_prompt_decorator}"\$ "
}

export PROMPT_COMMAND=set_shell_prompt