Re: [Technical Errata Reported] RFC7230 (5257)

Thanks for the correction. But I worry that with your proposed BNF, it is possible to make a production that ends with OWS. The current BNF does not allow productions that end in OWS, and I believe that is so that there wouldn’t be redundant OWS when the list is a field-value in a 
 
    header-field = field-name “:” OWS field-value OWS 
 
rule. To address the issues you’ve brought up, I propose another correction:
 
    #element => [ ( ("," [ OWS element ]) / element ) *( OWS "," [ OWS element ] ) ]