Function exclusive

other_src/lua/src/lpeg.cpp:1100–1104

static int exclusive (CharsetTag *c1, CharsetTag *c2) {
  if (c1->tag == NOINFO || c2->tag == NOINFO)
    return 0;  /* one of them is not filled */
  else return exclusiveset(c1->cs, c2->cs);
}


static Instruction *newcharset (lua_State *L) {