unsigned int bad;		/* Index of the character that is a nonbyte.
				 * If all characters are bytes, bad = used,
				 * though then we should never read it. */
    unsigned int used;		/* The number of bytes used in the byte
				 * array. */
    unsigned int allocated;	/* The amount of space actually allocated
				 * minus 1 byte. */
    unsigned char bytes[1];	/* The array of bytes. The actual size of this
    unsigned char bytes[TCLFLEXARRAY];	/* The array of bytes. The actual size of this
				 * field depends on the 'allocated' field
				 * above. */
} ByteArray;

#define BYTEARRAY_SIZE(len) \
		(offsetof(ByteArray, bytes) + (len))
#define GET_BYTEARRAY(irPtr) ((ByteArray *) (irPtr)->twoPtrValue.ptr1)

    int objc,
    Tcl_Obj *const objv[])
{
    Tcl_Obj *resultObj;
    unsigned char *data, *start, *cursor;
    int offset, count, rawLength, n, i, j, bits, index;
    int lineLength = 61;
    const unsigned char SingleNewline[] = { (unsigned char) '\n' };
    const unsigned char SingleNewline[] = { UCHAR('\n') };
    const unsigned char *wrapchar = SingleNewline;
    int wrapcharlen = sizeof(SingleNewline);
    enum { OPT_MAXLEN, OPT_WRAPCHAR };
    static const char *const optStrings[] = { "-maxlen", "-wrapchar", NULL };

    if (objc < 2 || objc % 2 != 0) {
	Tcl_WrongNumArgs(interp, 1, objv,