# open vim with a scratch window that can be discarded on exit.
vimscratch() {
    local args
    # if running in a pipe, use stdin (-) as arg.
    # -t checks if the given FD is a terminal
    if [ -t 0 ] ; then
        args="$@"
    else
        args="-"
    fi
    vim -c "set buftype=nofile" "$args"
}