RFC 4707, "Netnews Administration System (NAS)", October 2006

Errata ID: 5824
Status: Reported
Type: Technical
Publication Format(s) : TEXT
Reported By: Julien Élie
Date Reported: 2019-08-18

Throughout the document, when it says:

Section 6.3.3.8:

   hier-answer =/ "510" [answertext] CRLF
                  *(text CRLF)
                  "." CRLF
   hier-answer =/ "401" [answertext] CRLF
                  *(text CRLF)
                  "." CRLF

   hierdata    =  "Name:" WSP text CRLF
                  "Status:" WSP text CRLF
                  *(header ":" WSP text CRLF)
                  [("Ctl-PGP-Key:" CRLF PGP-answer /
                    "Mod-PGP-Key:" CRLF PGP-answer)]

Section 6.3.3.9:

   data-answer =/ "510" [answertext] CRLF
                  text CRLF
                  "." CRLF
   data-answer =/ "401" [answertext] CRLF
                  text CRLF
                  "." CRLF

   datadata    =  "Name:" WSP text CRLF
                  "Status:" WSP text CRLF
                  *(header ":" WSP text CRLF)
                  [("Ctl-PGP-Key:" CRLF PGP-answer /
                    "Mod-PGP-Key:" CRLF PGP-answer)]

It should say:

Section 6.3.3.8:

   hier-answer =/ "510" [answertext] CRLF
                  [1*text CRLF]
                  "." CRLF
   hier-answer =/ "401" [answertext] CRLF
                  [1*text CRLF]
                  "." CRLF

   hierdata    =  "Name:" WSP name CRLF
                  "Status:" WSP list-status CRLF
                  *(header ":" WSP *text CRLF)
                  [("Ctl-PGP-Key:" CRLF PGP-answer /
                    "Mod-PGP-Key:" CRLF PGP-answer)]

Section 6.3.3.9:

   data-answer =/ "510" [answertext] CRLF
                  [1*text CRLF]
                  "." CRLF
   data-answer =/ "401" [answertext] CRLF
                  [1*text CRLF]
                  "." CRLF

   datadata    =  "Name:" WSP name CRLF
                  "Status:" WSP list-status CRLF
                  *(header ":" WSP *text CRLF)
                  [("Ctl-PGP-Key:" CRLF PGP-answer /
                    "Mod-PGP-Key:" CRLF PGP-answer)]

Notes:

I suggest [1*text CRLF], that is to say a possible non-empty line, for hier-answer and data-answer with 501 or 401 response codes.
We need at least *text anyway (several characters), as shown in the examples in Section 6.3.3.8 and 6.3.3.9.

As for hierdata and datadata, the text keyword used thrice alone is also not right.

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