ietf-nntp draft-ietf-nntpext-base-19

[Clive D.W. Feather]

Russ Allbery said:
>>     At all points in the session those commands currently listed by LIST
>>     EXTENSIONS must be available.  Therefore, if a command defined by an
>>     extension (including those in section 8) is only available before or
>>     after a MODE READER command, or if the effects of the extension will
>>     be changed by the command, the LIST EXTENSIONS command MUST produce
>>     different results that indicate the differences.
> 
> I think instead of "the effects of the extension" you want to say "the
> parameters of the extension" or whatever term we used for the additional
> arguments after the first word of the line in LIST EXTENSIONS.  Effects
> seems to imply that if the command does something different before MODE
> READER than after MODE READER, LIST EXTENSIONS must change (even if the
> extension is advertised the same way at both points).

Um, yes, that *was* what I was trying to say. Let me try slightly different
wording:

     At all points in the session those commands currently listed by LIST
     EXTENSIONS must be available.  Therefore, if an extension (including
     those in section 8) is only available before or after a MODE READER
     command, the LIST EXTENSIONS command MUST only include the extension
     in that situation. Similarly, if only some of the commands in an
     extension will be available, or if the behaviour of the extension
     will change in some other manner, before or after a MODE READER
     command, this MUST be indicated by different arguments to the
     extension-label in the results of LIST EXTENSIONS in each situation.

I could live with (though I wouldn't like) that last MUST being a SHOULD.

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