[antlr-interest] unexpected token when AST rewrite is used

[Bernardo Elayda]

Hi,
Why does Antlr 3.0.1 complain that a token is unexpected for the rule called
B which has a single argument:

a : b[0]+ -> ^(MYPROGRAM b[0]+)
   ;

I can only get Antlr to accept the above rule if I do this:

a : b[0] -> ^(MYPROGRAM b+)

Are rules with arguments not allowed as child nodes in an Antlr AST?

tia,
Bernardo Elayda
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