Details

Some comments still talked about bit 'isrealasize', which has been
removed.

ltable.c

@@ -651,10 +651,9 @@ static void reinserthash (lua_State *L, Table *ot, Table *t) {
 
 
 /*
-** Exchange the hash part of 't1' and 't2'. (In 'flags', only the
-** dummy bit must be exchanged: The 'isrealasize' is not related
-** to the hash part, and the metamethod bits do not change during
-** a resize, so the "real" table can keep their values.)
+** Exchange the hash part of 't1' and 't2'. (In 'flags', only the dummy
+** bit must be exchanged:  The metamethod bits do not change during a
+** resize, so the "real" table can keep their values.)
 */
 static void exchangehashpart (Table *t1, Table *t2) {
   lu_byte lsizenode = t1->lsizenode;

ltm.h

@@ -49,7 +49,7 @@ typedef enum {
 ** Mask with 1 in all fast-access methods. A 1 in any of these bits
 ** in the flag of a (meta)table means the metatable does not have the
 ** corresponding metamethod field. (Bit 6 of the flag indicates that
-** the table is using the dummy node; bit 7 is used for 'isrealasize'.)
+** the table is using the dummy node.)
 */
 #define maskflags	cast_byte(~(~0u << (TM_EQ + 1)))