Hi Phil,

could you provide a textual definition of your grammar, and/or your 
ANTLR specification so far?

Cheers,
Nick

> I think ANTLR might be a quick way for me to build a validating lexer/parser. 
> The file I want to validate is essentially a comma separated values file but 
> the content of individual fields must adhere to content and length 
> restrictions. One field specification I can't seem to find a way of declaring 
> is (in regular expression form): [a-zA-Z]{1,128}.
>  
> Is there a way I could approach this?
>  
> 
> 
>       
> 
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