saphir.kd.sys_cbs = keydev.fp_ctrl_alt_cbs;
saphir.kd.null_cbs = CAlloc(0xd0);

I64 saphir_get_char()
{
    I64 sc = NULL;
    I64 ch = NULL;
    do {
        ch = GetKey(&sc, 0, 0);
        if (!ch) {
            switch (sc & 0xff) {
            case SC_CURSOR_UP:
            case SC_CURSOR_DOWN:
            case SC_CURSOR_LEFT:
            case SC_CURSOR_RIGHT:
                return ((sc & 0xff) << 8);
            default:
                break;
            }
        }
    } while (!ch);
    return ch;
}

U0 saphir_handle_prefix_cmd()
{
    I64 ch = saphir_get_char;
    switch (ch >> 8) {
    case SC_CURSOR_UP:
    case SC_CURSOR_DOWN:
    case SC_CURSOR_LEFT:
    case SC_CURSOR_RIGHT:
        saphir_win_select(ch >> 8);
        return;
    default:
        break;
    }
    switch (ch & 0xff) {
    case '%':
        saphir_split_col;
        return;
    case '"':
        saphir_split_row;
        return;
    default:
        break;
    }
}

Bool saphir_MyPutKey(I64 ch, I64 sc)
{
    no_warn sc;
    switch (ch) {
    case CH_CTRLB:
        saphir_handle_prefix_cmd;
        return TRUE;
    }
    return FALSE;
}

U0 saphir_keydev(Bool enable)
{
    fn_patch(&MyPutKey, &saphir_MyPutKey, enable);
    switch (enable) {
    case 0:
        keydev.fp_ctrl_alt_cbs = saphir.kd.sys_cbs;
        return;
    default:
        keydev.fp_ctrl_alt_cbs = saphir.kd.null_cbs;
        return;
    }
}