UNSPEC
strcpy(sp->chars, UNSPEC);
static char const UNSPEC[] = "-00";
enum { CHARS_EXTRA = max(sizeof UNSPEC, 2) - 1 };
return memcmp(abbr, UNSPEC, sizeof UNSPEC) == 0;
} op = UNSPEC, old_op;
if (old_op != UNSPEC && old_op != op)
if (op == UNSPEC)
case UNSPEC: