Re: [Json] [Technical Errata Reported] RFC8259 (6208)
David Golden <xdg@xdg.me> Wed, 10 June 2020 14:50 UTC
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From: David Golden <xdg@xdg.me>
Date: Wed, 10 Jun 2020 10:49:47 -0400
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To: Barry Leiba <barryleiba@computer.org>
Cc: Carsten Bormann <cabo@tzi.org>, RFC Errata System <rfc-editor@rfc-editor.org>, Tim Bray <tbray@textuality.com>, Murray Kucherawy <superuser@gmail.com>, "Matthew A. Miller" <linuxwolf+ietf@outer-planes.net>, json@ietf.org
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Subject: Re: [Json] [Technical Errata Reported] RFC8259 (6208)
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I understand. Would it be more appropriate then to limit the "may ignore a BOM" to "may ignore a UTF-8 BOM" so that the interop suggestion does not inadvertently encourage incorrect decoding? That would be consistent with the UTF-8 only restriction and leave legacy encoding/BOM considerations out of scope. I realize this may seem picky, but this stems from discussions at work about whether/how to support legacy BOMs and people have interpreted the RFC differently. I was hoping to create clarity consistent with the intent of the working group, whatever that turns out to be. David On Wed, Jun 10, 2020 at 10:42 AM Barry Leiba <barryleiba@computer.org> wrote: > David, I understand that it might be worth having further discussion > about the issue. The problem *here* is that there is not an error in > the RFC: the RFC accurately reflects the consensus of the working > group and the text that was reviewed and agreed on at the time. So > it's not in scope for an errata report. Discussion about whether or > not to revisit this and to publish an RFC that says something > different is... a separate discussion. > > Barry, ART AD > > On Wed, Jun 10, 2020 at 10:38 AM David Golden <xdg@xdg.me> wrote: > > > > I agree that BOMs don't belong on JSON, but three prior RFC allowed > them. (The first one even specified how to do so.) > > > > Given a JSON text generated under a previous specification with a > UTF-16/32 BOM, ignoring the BOM is incorrect behavior. As currently > written -- copied verbatim from the prior two RFCs when BOMs were legal -- > the only interoperability suggestion is to ignore a BOM. > > > > My proposal does not encourage the use of BOMs or unravel the WG > consensus (which I fully support). It merely prepares implementations for > the presence of other implementations that predate the current, more > restrictive specification. > > > > Respectfully yours, > > David > > > > On Wed, Jun 10, 2020 at 9:43 AM Carsten Bormann <cabo@tzi.org> wrote: > >> > >> The WG had pretty strong consensus that BOMs don’t belong on JSON. > >> This “MAY” prepares implementations for the presence of other > implementations that do not heed that consensus. No functionality is > assigned by this MAY. > >> > >> Since Errata are not intended to unravel WG decisions: Reject. > >> > >> Apart from that, I seriously don’t understand what the "indicate an > alternate encoding” would be — the JSON text already is UTF-8? > >> > >> Grüße, Carsten > >> > >> > >> > On 2020-06-10, at 15:32, RFC Errata System <rfc-editor@rfc-editor.org> > wrote: > >> > > >> > The following errata report has been submitted for RFC8259, > >> > "The JavaScript Object Notation (JSON) Data Interchange Format". > >> > > >> > -------------------------------------- > >> > You may review the report below and at: > >> > https://www.rfc-editor.org/errata/eid6208 > >> > > >> > -------------------------------------- > >> > Type: Technical > >> > Reported by: David Golden <xdg@xdg.me> > >> > > >> > Section: 8.1 > >> > > >> > Original Text > >> > —————— > >> > In the interests of interoperability, implementations that parse JSON > texts MAY ignore the presence of a byte order mark rather than treating it > as an error. > >> > > >> > Corrected Text > >> > -------------- > >> > In the interests of interoperability, implementations that parse JSON > texts MAY ignore the presence of a byte order mark or MAY interpret a byte > order mark to indicate an alternate encoding rather than treating it as an > error. > >> > > >> > Notes > >> > ----- > >> > The original line is copied from previous RFCs that specifically > allowed alternate encodings. In the context of a new, UTF-8 only > restriction, interoperability provisions should also address interpreting > legacy formats that predate the restriction. By omission, readers may > conclude that the *only* option for a BOM is to ignore or error. > >> > > >> > Instructions: > >> > ------------- > >> > This erratum is currently posted as "Reported". If necessary, please > >> > use "Reply All" to discuss whether it should be verified or > >> > rejected. When a decision is reached, the verifying party > >> > can log in to change the status and edit the report, if necessary. > >> > > >> > -------------------------------------- > >> > RFC8259 (draft-ietf-jsonbis-rfc7159bis-04) > >> > -------------------------------------- > >> > Title : The JavaScript Object Notation (JSON) Data > Interchange Format > >> > Publication Date : December 2017 > >> > Author(s) : T. Bray, Ed. > >> > Category : INTERNET STANDARD > >> > Source : Javascript Object Notation Update > >> > Area : Applications and Real-Time > >> > Stream : IETF > >> > Verifying Party : IESG > >> > > >> > _______________________________________________ > >> > json mailing list > >> > json@ietf.org > >> > https://www.ietf.org/mailman/listinfo/json > >> > > > > > > -- > > David Golden <xdg@xdg.me> • https://xdg.me/ • Twitter/GitHub: @xdg > -- David Golden <xdg@xdg.me> • https://xdg.me/ • Twitter/GitHub: @xdg
- [Json] [Technical Errata Reported] RFC8259 (6208) RFC Errata System
- Re: [Json] [Technical Errata Reported] RFC8259 (6… Carsten Bormann
- Re: [Json] [Technical Errata Reported] RFC8259 (6… Barry Leiba
- Re: [Json] [Technical Errata Reported] RFC8259 (6… David Golden
- Re: [Json] [Technical Errata Reported] RFC8259 (6… Barry Leiba
- Re: [Json] [Technical Errata Reported] RFC8259 (6… David Golden
- [Json] Sticking to the past -- Re: [Technical Err… Carsten Bormann
- Re: [Json] [Technical Errata Reported] RFC8259 (6… Tim Bray
- Re: [Json] [Technical Errata Reported] RFC8259 (6… John R. Levine
- Re: [Json] [Technical Errata Reported] RFC8259 (6… Nico Williams