.bash_prompt

force_color_prompt=yes

function bash_prompt {
    local return_val=$?; 

    local history_number=`history | tail -1 | awk '{print $1}'`
    local history_length=$(( `echo ${history_number} | wc -c | awk '{print $1}'` - 1))

    local lm=""
    local rm=""
    local code="${EMY}${history_number}${NONE}"

    local  BGR="\[\033[41m\]"
    local  EMY="\[\033[1;33m\]"
    local  EMW="\[\033[1;37m\]"
    local    Y="\[\033[0;33m\]"
    local NONE="\[\033[0m\]"

    if (( ${return_val} != 0 )) ; then
        local prec=${return_val} 
        local prec_length=$((`echo ${prec} | wc -c | awk '{print $1}'` - 1))

        local margin=$((${history_length} - ${prec_length}))
        if (( ${margin} == 1 )) ; then
            lm=" "
        else
            while (( ${margin} > 0 ))
            do
                lm="${lm} "
                if (( ${margin} != 1 )) ; then
                    rm="${rm} "
                fi
                margin=$((${margin}-2))
            done
        fi

        code="${EMY}${BGR}${lm}${prec}${rm}${NONE}"
    	REMIND=1
    else
        if [[ "${LAST_HISTORY}" == "${history_number}" ]] ; then
            margin=$((${history_length} - 1))
            if (( ${margin} == 1 )) ; then
                lm=" "
            else
                while (( ${margin} > 0 ))
                do
                    lm="${lm} "
                    if (( ${margin} != 1 )) ; then
                         rm="${rm} "
                    fi
                    margin=$((${margin}-2))
                done
            fi

            code="${lm}↺${rm}"
        fi
	    if [[ "${REMIND}" == "1" ]] ; then
            code="${history_number}"
	    fi
        unset REMIND
    fi

    LAST_HISTORY=${history_number}
    PS1="[${code}]${EMW}\u${NONE}@\h:\W${Y}\$${NONE} "
    set ?=${return_val}
}

PROMPT_COMMAND=bash_prompt
export `grep -P '^[^\=:space:]*?\=' $HOME/.bashrc | sed 's/=.*//g' |xargs`