Re: Use of LWSP in ABNF -- consensus call

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On May 14, 2007, at 3:55 PM, Dave Crocker wrote:


Lisa Dusseault wrote:
The IESG reviewed <http://www.ietf.org/internet-drafts/draft- crocker-rfc4234bis-00.txt> for publication as Internet Standard and would like to know if there is consensus to recommend against the use of LWSP in future specifications,

1 This issue was initially raised in the IESG by Chris Newman, who changed his Discuss, with a statement that he recommended inserting a comment, along the lines that others are also recommending. Unless I've misread the record, all other votes on advancing ABNF from Draft to Full are positive or neutral,.
except for your own Discuss.  Is this correct?


The issue was initially raised by Frank Ellerman or by various in the DKIM WG depending on how you look at it -- Frank explicitly suggested possible changes to the draft, in his posting to the IETF list.

You're right about the voting situation but here's the background: I took on the DISCUSS myself as a placeholder for an issue that the IESG had consensus to investigate further (consensus to investigate what the consensus is). I could have asked somebody else to hold the DISCUSS but this seemed most convenient as long as the rest of the IESG trusted me to investigate.


2. The ABNF is a candidate for moving from Draft to Full. Will removing a rule (that is already in use?) or otherwise changing the semantics of the specification, at this point, still permit the document to advance? I had the impression that moving to Full was based on some serious beliefs about a specification's being quite stable. Making this kind of change, this late in
the game, would seem to run counter to that.

Moving to Internet Standard is indeed something we do carefully, and of course that means investigating proposed changes to make sure they're appropriate, and setting a high bar for accepting them. I believe that's what we're doing here, investigating carefully.

I share your concerns about removing rules that are already in use -- that would generally be a bad thing. However I'm interested in the consensus around whether a warning or a deprecation statement would be a good thing.

Thanks,
Lisa

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