Re: ABNF to Draft -- pending issues
Harald Tveit Alvestrand <[email protected]>
| Newsgroups | gmane.ietf.rfc822 |
|---|---|
| Message-ID | <9DEB27774E7A3744F7B1B931@B50854F0A9192E8EC6CDA126> |
Bill, thanks for generating the real data! I withdraw my objections at this time. (part of the confusion is because I've done a lousy job of keeping versions of my parser straight; I believe that the parser I'm currently using for myself implements the blank-line fix; I don't know what versions are "out there", and don't even know how to tell you to figure out which version they are.) --On 7. mars 2005 19:00 -0600 Bill Fenner <[email protected]> wrote: > > Harald, > > I used my ABNF extractor on RFCs 3000-3999, resulting > in 128 ABNF documents. I parsed them with both your parser (from > http://www.ops.ietf.org/abnf/parser.tar.gz) and mine. Your parser > presumably implements the rules you think should exist; mine implements > exactly RFC2234 (modulo bugs; none currently known). > > Of these 128 documents, mine failed none that yours didn't also fail; > yours failed 14 that mine passed; mostly because yours appears to only > accept at most two characters in %x00.00.00.00 style string and because > you only accept uppercase hex digits in %x constructs. > > I'll also note that your parser doesn't permit either blank lines > or multi-line prose-vals; > > forbin% cat blankline > a = b > > c > forbin% ./parser blankline > Rule: a = b > Not OK > Syntax error: c<*> > > forbin% cat proseval > proseval = <This is a multi-line prose-val, > which rfc2234 does not permit.> > > forbin% ./parser proseval > Not OK > Syntax error: proseval = <This is a multi-line prose-val, > <*> > > so I'm not sure what implementation it is you're pointing to that > implements the thing that's not 2234. > > Bill > >