Hello, I trust you are well.
I am working on building a LALR parser for ABNF grammars using Bison and am running into shift/reduce conflicts pertaining to whitespace. The rule that is causing this issue is the alternation rule (from the RFC for ABNF <https://datatracker.ietf.org/doc/html/rfc5234>): alternation = concatenation *(*c-wsp "/" *c-wsp concatenation) concatenation = repetition *(1*c-wsp repetition) /* I have just set repetition to be a character value for simplicity */ c-wsp = WSP / (c-nl WSP) c-nl = comment / CRLF comment = ";" *(WSP / VCHAR) CRLF I have attached my current Bison grammar. I believe I know what is causing the conflict but am having some trouble coming to a solution. Any advice would be greatly appreciated. Best, Josh
abnf.y
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