bash script to output whether I have changes on my branch folder or not

bash.sh

# Time Variables
Time12h="\T"
Time12a="\@"

# where am i?
print_before_the_prompt () {

    # is this a git or hg branch?
    DVCS=''
    IS_GIT_BRANCH=`git branch 2> /dev/null | grep \* | awk '{print $2}'`
    IS_HG_BRANCH=`hg prompt "{{branch}}{ at {bookmark}}{status} " 2> /dev/null`
    if [[ "$IS_GIT_BRANCH" != "" ]]; then

        BRANCH_NONE=`git status | grep "nothing" > /dev/null 2>&1`
        BRANCH_ADDS=`git status | grep "untracked" > /dev/null 2>&1`
        BRANCH_MODS=`git status | grep "changes" > /dev/null 2>&1`

        if [[ "$BRANCH_NONE" != "" ]]; then
            BRANCH_STATUS=""
        elif [[ "$BRANCH_MODS" != "" ]]; then
            BRANCH_STATUS="w/modifications"
        elif [ "$BRANCH_ADDS" != "" ] && [ "$BRANCH_MODS" == "" ]; then
            BRANCH_STATUS="w/additions"
        fi

        DVCS="git → $IS_GIT_BRANCH $BRANCH_STATUS"

    elif [[ "$IS_HG_BRANCH" != "" ]]; then

        DVCS="hg → $IS_HG_BRANCH"

    else

        DVCS=""

    fi

    printf "\n$txtpur%s $txtcyn%s $txtylw%s $txtred%s \n$txtrst" "💩 " "$PWD/" "   $DVCS"

}
PROMPT_COMMAND=print_before_the_prompt
export PS1=$txtblu$Time12a$txtrst' → '