ietf-nntp LISTGROUP can't return 412

[Clive D.W. Feather]

Russ Allbery said:
> (Sorry about the flurry of messages; I'm auditing the entire draft against
> INN and sending messages as I see things.  Hopefully the individual
> messages will make tracking each separate issue easier.  This one should
> have been combined with the previous note, but I didn't see it before I
> sent the last message.)
> 
> The LISTGROUP list of response codes in 9.5.1.1.1 includes:
> 
>     412 Not currently in newsgroup
> 
> That response seems nonsensical for LISTGROUP; LISTGROUP can be used
> instead of the GROUP command, and it's therefore entirely valid to use
> outside of a newsgroup.  I don't believe 412 is a valid response to a
> LISTGROUP command.

It's a valid response when there is no argument *and* no currently selected
group.

> Similarly, the examples section has:
> 
>     Example of an attempt to retrieve an article when the current 
>     group selected is empty 
>             [S] 200 NNTP Service Ready 
>             [C] LISTGROUP example.empty.newsgroup 
>             [S] 412 No current article selected  
> 
> This example makes no sense (particularly the description).

I think that the examples *should* have been:

    Example of LISTGROUP on an empty group:
            [S] 200 NNTP Service Ready
            [C] LISTGROUP example.empty.newsgroup
            [S] 211 list of article numbers follows
            [S] .

    Example of LISTGROUP on a valid current group:
            [S] 200 NNTP Service Ready
            [C] GROUP misc.test
            [S] 211 2000 3000234 3002322 misc.test selected
            [C] LISTGROUP
            [S] 211 list follows
            [S] 3000234
            [S] 3000237
            [S] 3000238
            [S] 3000239
            [S] 3002322
            [S] .

    Example of LISTGROUP failing because no group has been selected:
            [S] 200 NNTP Service Ready
            [C] LISTGROUP
            [S] 412 no current group
            [C] GROUP example.is.sob.bradner.or.barber
            [S] 411 no such group
            [C] LISTGROUP
            [S] 412 no current group

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Clive D.W. Feather  | Work:  <clive at demon.net>   | Tel:  +44 20 8371 1138
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