Dear Wise Ones:
I don't get it.  Can someone explain this to me?
I thought that intestinal gas was caused by one of these things:
1.  Swallowed air (including as in carbonated beverages)
2.  Indigestible fiber (as in Brussels sprouts or cabbage)  or
3.  Intestinal overactivity (as in illness or food intolerance)
*IF* this is the case, then for a food which causes Mom gas to cause gas for BF baby, too, the problem would have to transfer to the milk.  Now I can't figure out how air or *indigestible* fiber (if you can't digest it, how can you absorb it into the blood?) could end up in Mom's milk to give the baby trouble.  Nor could Mom's intestinal bug - although I quite understand that foods to which baby is allergic may cause problems via transfer of the offending proteins into the milk.
I have always felt that the "if you eat cabbage the baby will have gas" was fiction.  Maybe the strong flavor could alter the taste of the milk and annoy the baby...  BTW, do oriental moms eschew kimchee, bok choy and other similar foods throughout the (traditionally quite long) lactation period?  
TIA for enlightening me.  Perhaps I have "poo-poo'd" the Mom's diet - baby's gas connection ignorantly, and need to change my tune.
Willow