Function sanitize_name

src/bones.c:197–220

while loading bones, strip out text possibly supplied by old player that might accidentally or maliciously disrupt new player's display */

/* while loading bones, strip out text possibly supplied by old player
   that might accidentally or maliciously disrupt new player's display */
void
sanitize_name(char *namebuf)
{
    int c;
    boolean strip_8th_bit = (WINDOWPORT(tty)
                             && !iflags.wc_eight_bit_input);

    /* it's tempting to skip this for single-user platforms, since
       only the current player could have left these bones--except
       things like "hearse" and other bones exchange schemes make
       that assumption false */
    while (*namebuf) {
        c = *namebuf & 0177;
        if (c < ' ' || c == '\177') {
            /* non-printable or undesirable */
            *namebuf = '.';
        } else if (c != *namebuf) {
            /* expected to be printable if user wants such things */
            if (strip_8th_bit)
                *namebuf = '_';
        }
        ++namebuf;
    }
}

/* Give object to a random object-liking monster on or adjacent to x,y
   but skipping hero's location.