unsigned char c;

	const char *p1, *p2;

	int n;

	char *r, *ri;

	int len, dc;

	rune_t c;

	for (n = 0; (c = *s) != '\0'; ++s, ++n)

	p1 = s;

		if (isprint(c))

	dc = len = strlen(s);

			putchar(c);

	ri = r = (char *)malloc(len + 1);

		else

	while(*p1 != 0) {

			putchar('?');

		c = sgetrune(p1, dc, &p2);

	return n;

		if(c == _INVALID_RUNE) {

			p1++;

			dc--;

			*ri++ = '?';

		} else {

			dc -= p2 - p1;

			if(isprint(c))

				while(p1 != p2)

					*ri++ = *p1++;

			else

				while(p1 != p2)

					*ri++ = '?';

		}

	}

	*ri = 0;

	printf("%s", r);

	return len;