If you mean why do you get the shift/reduce errors, it is because your grammar is ambiguous.
You can deal with the ambiguity in several ways, but %left to specify associativity and precedence as I said earlier seems like the easiest in your case. Doing that will remove all conflicts from your grammar, even the one in state 14. j. _______________________________________________ help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
