Function set2

Source/Misc/lua/src/lua.c:14719–14722

static void set2 (lua_State *L, int i, int j) {
lua_rawseti(L, 1, i);
lua_rawseti(L, 1, j);
}

static int sort_comp (lua_State *L, int a, int b) {
if (!lua_isnil(L, 2)) {  /* function? */