For the bibliography references, I'd like CWG and/or LWG review / approval that we're still good with the semantics described in the updated version. (Alternatively, some review in the editorial group that Unicode did at most editorial updates to the relevant sections.)

For the references in iostreams.tex, we should instead refer to ISO 10646 and avoid the numerical section references (because it may change when updates are published).

I agree with Jens, changing the references is not just editorial.

For the bibliography references, I'd like CWG and/or LWG review / approval that we're still good with the semantics described in the updated version. (Alternatively, some review in the editorial group that Unicode did at most editorial updates to the relevant sections.)

For the references in iostreams.tex, we should instead refer to ISO 10646 and avoid the numerical section references (because it may change when updates are published).

But this is not a behavior described by ISO 10646. References in Unicode do not happen to change very often. I'd have not objection to remove the numerical reference though

But this is not a behavior described by ISO 10646.

Ah, ok, then we should leave Unicode in there.

In any case, it looks like we want an LWG issue here. Can we close the editorial issue?

Since changing normative references is not editorial, I don't see how it would be appropriate to make this change without WG21 oversight and record keeping. But it sounds like filing an LWG issue would be a bit simpler than filing an NB comment!

@tkoeppe , the bibliography changes are not per se normative (but may still present a larger lever than what we're happy to apply editorially).

Normatively referenced documents shall be documents published by ISO or IEC. In the absence of appropriate ISO or IEC documents, those published by other bodies may be listed as normative references provided that [...]
-- ISO/IEC Directives, Part 2, section 10.2 "Permitted referenced documents"

It seems possible to keep only the undated reference in [intro.refs] if ISO/IEC 10646 is not appropriate due to

[P]revent[ing] the use of features from newer Unicode Standard releases for up to several years.
-- cplusplus/nbballot#412 (comment)

@JohelEGP,

It seems possible to keep only the undated reference in [intro.refs] if ISO/IEC 10646 is not appropriate due to

I'm not sure how helpful that is. New ISO/IEC 10646 standards are released every three years, but new revisions of the Unicode Standard are released every year. The ISO does release amendments each year to synchronize the current ISO/IEC 10646 standard with new releases of the Unicode Standard. In order to reference a consistent set of Unicode features while still referencing both ISO/IEC 10646 and the Unicode Standard, we would need to somehow state that implementors consult the version of ISO/IEC 10646 + amendment that corresponds to the version of the Unicode Standard being used. We might also need to specify a minimum Unicode Standard version to ensure referenced features are present.

10.4 Undated references says

Undated references may be made:
• only to a complete document;
• if it will be possible to use all future changes of the referenced document for the purposes of the referring document;
• when it is understood that the reference will include all amendments to and revisions of the referenced document.

Seems like that fits the stated needs.

Thank you, @JohelEGP, that reference is helpful. I agree that we have the ability to reference both in a consistent fashion. That still leaves us with the downsides of 1) requiring us to word the dependency relationship between the two standards, 2) requiring implementors to consult both standards, and 3) resolving any discrepancies that arise between the two standards.

Those downsides aren't exorbitant, but they are complications that would be avoided by solely referring to the Unicode Standard.

If those downsides make the ISO Standard not appropriate, it seems to me that the first quote of #5826 (comment) can be applied to refer only to the Unicode Standard.