std.log.alert("unable to set termios state: {s}", .{err});

        std.log.err("unable to set termios state: {s}", .{err});

            std.log.debug("{d}", .{ch});

            std.log.debug("{d}\r", .{ch});

            std.log.debug("{d} {c}", .{ ch, ch });

            std.log.debug("{d} {c}\r", .{ ch, ch });

    termState.lflag &= ~@as(linux.tcflag_t, linux.ECHO | linux.ICANON);

    // These are the flags for setting up raw mode (see man 3 termios)
    // The explanation is for the switched off state.
    // ~ECHO: not-repeating every input back to output
    // ~ECHONL:
    // ~ICANON: read input by bytes, no need to press <Enter> after every line
    // ~ISIG: send raw bytes instead of signals for the program (C-c, C-z etc.)
    // ~IEXTEN: disable (C-v) literal signal sending
    // ~IXON: disable flow control: suspend (C-s), resume (C-q)
    // ~ICRNL: disable C-m rewrite from \r to \n (from 13 to 10)
    // ~INLCR:
    // ~BRKINT, ~IGNBRK, ~PARMRK: BREAK reads as null byte ('\0')
    // ~ISTRIP: do not strip off 8th bit
    // ~IGNCR: do not ignore carrige return
    // ~OPOST: output post-processing: \n -> \r\n
    // ~CSIZE:
    // ~PARENB:

    // only in snapdragon's kilo:
    // ~INPCK: disable input parity check
    termState.lflag &= ~@as(linux.tcflag_t, linux.ECHO | linux.ECHONL | linux.ICANON |
        linux.ISIG | linux.IEXTEN);
    termState.iflag &= ~@as(linux.tcflag_t, linux.IXON | linux.ICRNL | linux.INLCR |
        linux.BRKINT | linux.IGNBRK | linux.PARMRK | linux.ISTRIP | linux.IGNCR);
    termState.oflag &= ~@as(linux.tcflag_t, linux.OPOST);
    termState.cflag &= ~@as(linux.tcflag_t, linux.CSIZE | linux.PARENB);
    // CS8 bit mask sets up character size to 8 bit/byte
    termState.cflag |= linux.CS8;