[antlr-interest] error(211)

[Martin Kohl]

Hi all,

I've stumbled upon an error:
error(211): Expr.g:490:3: [fatal] rule rule_name has non-LL(*) decision due
to recursive rule invocations reachable from alts 1,4.  Resolve by
left-factoring or using syntactic predicates or using backtrack=true option.

I've had this error in a few other places and I resolved it by setting the
backtrack=true option. However this doesn't work for this rule:
        (    expression ','
        |    '*' ','
        |    ','
        )*
        expression ':'

The Line Reference of the error message points to the second expression. If
I remove the * or the second expression the error is resolved.

I'd be very grateful for any advice as to how to resolve this problem.
Kind Regards,
Martin
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