if [ -t 0 -a $# -eq 0 ]; then
    if [ ! -x @BINDIR@/resize ] ; then
        if [ -n "$BASH_VERSION" ] ; then
            # Optimized resize funciton for bash
            resize() {
                local x y
                IFS='[;' read -t 2 -p $(printf '\e7\e[r\e[999;999H\e[6n\e8') -sd R _ y x _
                [ -n "$y" ] && \
                echo -e "COLUMNS=$x;\nLINES=$y;\nexport COLUMNS LINES;" && \
                stty cols $x rows $y
            }
        else
            # Portable resize function for ash/bash/dash/ksh
            # with subshell to avoid local variables
            resize() {
                (o=$(stty -g)
                stty -echo raw min 0 time 2
                printf '\0337\033[r\033[999;999H\033[6n\0338'
                if echo R | read -d R x 2> /dev/null; then
                    IFS='[;R' read -t 2 -d R -r z y x _
                else
                    IFS='[;R' read -r _ y x _
                fi
                stty "$o"
                [ -z "$y" ] && y=${z##*[}&&x=${y##*;}&&y=${y%%;*}
                [ -n "$y" ] && \
                echo "COLUMNS=$x;"&&echo "LINES=$y;"&&echo "export COLUMNS LINES;"&& \
                stty cols $x rows $y)
            }
        fi
    fi
    # Use the EDITOR not being set as a trigger to call resize
    # and only do this for /dev/tty[A-z] which are typically
    # serial ports
    if [ -z "$EDITOR" -a "$SHLVL" = 1 ] ; then
        case $(tty 2>/dev/null) in
            /dev/tty[A-z]*) resize >/dev/null;;
        esac
    fi
fi