Show directory, branch and time since last commit

Git Bash Prompt

# Prompt Setup

function minutes_since_last_commit {
    now=`date +%s`
    last_commit=`git log --pretty=format:'%at' -1`
    seconds_since_last_commit=$((now-last_commit))
    minutes_since_last_commit=$((seconds_since_last_commit/60))
    echo $minutes_since_last_commit
}

git_prompt() {
    local g="$(__gitdir)"
    if [ -n "$g" ]; then
        local MINUTES_SINCE_LAST_COMMIT=`minutes_since_last_commit`
        if [ "$MINUTES_SINCE_LAST_COMMIT" -gt 30 ]; then
            local COLOR=${RED}
        elif [ "$MINUTES_SINCE_LAST_COMMIT" -gt 10 ]; then
            local COLOR=${YELLOW}
        else
            local COLOR=${GREEN}
        fi
        local SINCE_LAST_COMMIT="${COLOR}$(minutes_since_last_commit)m${NORMAL}"
        # The __git_ps1 function inserts the current git branch where %s is
        local GIT_PROMPT=`__git_ps1 "(%s|${SINCE_LAST_COMMIT})"`
        echo ${GIT_PROMPT}
    fi
}

PS1="\n\W \$(git_prompt) → "