[antlr-interest] question about nondeterminism

[cj_daly]

I've got antlr 2.7.2.  Can anyone explain why the following grammar
gives nondeterminism warnings?  I would think that with enough
lookahead there should should be no ambiguity, but maybe I am
misunderstanding "nondeterminism".

Is this ignorable?

Without refactoring the rules is there some way (options?) to make the
warning go away?  (I know I could pull the ("A")? up into the test
rule before the foo|bar alternative but I'm trying to avoid that.)

below is the grammar:

////
class TestParser extends Parser;

options { k=2; }

test : foo | bar;

foo : ("A")? "X";
bar : ("A")? "Y";




 
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