Re: Use of LWSP in ABNF -- consensus call
Julian Reschke <julian.reschke@gmx.de> Mon, 14 May 2007 20:56 UTC
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Date: Mon, 14 May 2007 22:55:54 +0200
From: Julian Reschke <julian.reschke@gmx.de>
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To: Lisa Dusseault <lisa@osafoundation.org>
Subject: Re: Use of LWSP in ABNF -- consensus call
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Cc: Apps Discuss <discuss@apps.ietf.org>, Paul Overell <paul.overell@thus.net>, Dave Crocker <dcrocker@bbiw.net>, IETF General Discussion Mailing List <ietf@ietf.org>, ietf-dkim@mipassoc.org
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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, > as it has caused problems recently in DKIM and could cause problems in > other places. > > Some discussion on this point already: > - http://www1.ietf.org/mail-archive/web/ietf/current/msg46048.html > - http://www1.ietf.org/mail-archive/web/discuss/current/msg00463.html > - http://mipassoc.org/pipermail/ietf-dkim/2007q1/007295.html > - > https://datatracker.ietf.org/public/pidtracker.cgi?command=view_comment&id=66440 > (in this tracker comment, Chris Newman recommended to remove LWSP, but > for backward-compatibility it's probably better to keep it and recommend > against use) I agree that LWSP can be problematic. As the LWSP rule only appears in appendix B, the best approach IMHO would be to either leave it in, and have a warning explaining the potential problems close to it, or remove it. The latter sounds simpler, but could cause spec writers that use ABNF to just copy the LWSP rule from RFC4234, ignoring the potential issues with it. The proposed solution to warn about it in the front matter doesn't seem to be a good idea due to locality reasons. If there are reasons to avoud LWSP, they should be stated close to the definition. If this means we need a new revision of the spec, and last-call it again, so be it. No reason to hurry. Best regards, Julian
- Use of LWSP in ABNF -- consensus call Lisa Dusseault
- Re: Use of LWSP in ABNF -- consensus call Julian Reschke
- Re: Use of LWSP in ABNF -- consensus call Frank Ellermann
- Re: Use of LWSP in ABNF -- consensus call Lisa Dusseault
- Re: Use of LWSP in ABNF -- consensus call Paul Hoffman
- Re: Use of LWSP in ABNF -- consensus call Tony Hansen
- Re: Use of LWSP in ABNF -- consensus call Tony Finch
- Re: Use of LWSP in ABNF -- consensus call Clive D.W. Feather
- Re: Use of LWSP in ABNF -- consensus call Keith Moore
- Re: Use of LWSP in ABNF -- consensus call Harald Alvestrand
- Re: Use of LWSP in ABNF -- consensus call Frank Ellermann
- Re: Use of LWSP in ABNF -- consensus call Ned Freed
- Re: Use of LWSP in ABNF -- consensus call John C Klensin
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Tony Finch
- Re: Use of LWSP in ABNF -- consensus call Dave Crocker
- Re: Use of LWSP in ABNF -- consensus call Eric Allman
- Re: Use of LWSP in ABNF -- consensus call Philip Guenther
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Dave Crocker
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Dave Crocker
- Re: Use of LWSP in ABNF -- consensus call Douglas Otis
- Re: Use of LWSP in ABNF -- consensus call Alexey Melnikov
- RE: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Bill.Oxley
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… John C Klensin
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… John C Klensin
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Tony Finch
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… John C Klensin
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Harald Tveit Alvestrand
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Dave Crocker
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… todd glassey
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Sam Hartman
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Sam Hartman
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Dave Crocker
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Tony Finch
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… John C Klensin
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Keith Moore
- Re: Use of LWSP in ABNF -- consensus call Frank Ellermann
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Tony Finch
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Sam Hartman
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Sam Hartman
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… John C Klensin
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Tony Finch
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Sam Hartman
- Re: Use of LWSP in ABNF -- consensus call Lisa Dusseault
- Re: [ietf-dkim] Re: Use of LWSP in ABNF -- consen… Clive D.W. Feather
- Re: Use of LWSP in ABNF -- consensus call Lisa Dusseault
- Re: Use of LWSP in ABNF -- consensus call Dave Crocker
- Re: Use of LWSP in ABNF -- consensus call Keith Moore
- Re: Use of LWSP in ABNF -- consensus call Frank Ellermann
- Re: Use of LWSP in ABNF -- consensus call John C Klensin
- Re: Use of LWSP in ABNF -- consensus call Alexey Melnikov
- Re: Use of LWSP in ABNF -- consensus call Clive D.W. Feather
- Re: Use of LWSP in ABNF -- consensus call Dave Crocker