[antlr-interest] Determinig the real ambiguities

[Anakreon]

Monty should have provided the answer to your question.
Instead of
a_must_have_c : (A)? (B)+ C D | (B)+ D ;
I would try this to resolve the ambiguities:
a_must_have_c 
:
A (B)+ C D
| (B)+ (C)? D
;

I guess this should not generate ambiguities and matches
the same input as your version of a_must_have_c.

Anakreon.


 
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