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Make the reference to The Unicode Standard undated #618

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palemieux wants to merge 3 commits into from
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Make the reference to The Unicode Standard undated #618

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Make the reference to The Unicode Standard undated
palemieux Sep 10, 2025
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Merge branch 'main' into issues/0617-make-unicode-reference-undated
palemieux Sep 25, 2025
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Change to Unicode Consortium
palemieux Sep 25, 2025
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11 changes: 3 additions & 8 deletions imsc1/spec/ttml-ww-profiles.html
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Expand Up @@ -128,11 +128,6 @@
publisher: "ARIB",
href:"https://www.arib.or.jp/english/std_tr/broadcasting/std-b62.html",
title: "STD-B62, Multimedia Coding Specification For Digital Broadcasting (Second Generation), Version 2.2 (Fascicle 1)"
},
"ISO10646": {
publisher: "International Organization for Standardization",
href: "https://www.iso.org/standard/76835.html",
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@nigelmegitt nigelmegitt Sep 25, 2025

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Removing this means there's no link at all to this reference, and that it is the only reference in the spec without a link.

That seems like a non-ideal result. Specref doesn't have any link to 10646 that I can find. @himorin do you know if there's any other way to reference this important document? I wonder if i18n has a guide for how to reference it, for example.

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@palemieux palemieux Sep 25, 2025

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Removing this means there's no link at all to this reference, and that it is the only reference in the spec without a link.

Do you mean without URL?

ISO does not offer URLs to the latest edition of the standard.

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@himorin himorin Sep 25, 2025

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As pointed during call (sorry Ive missed at that period), I also could not find any canonical pointer to the newest version of 10646. ICS does not work on this front nor search box does not change URL.
Also for character collection we refer for ja subset, I could not find any pointer within Unicode one. I haven't checked entire UTS or else, but seems missIng in Unicode. (or may have some replacement by General Category or something??)

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@himorin himorin Sep 25, 2025

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For other specs, I suppose most of text refer Unicode but not 10646, which seems not in xref neither(??)...

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@palemieux palemieux Sep 25, 2025

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Also for character collection we refer for ja subset, I could not find any pointer within Unicode one. I haven't checked entire UTS or else, but seems missIng in Unicode.

I think you might be right. See https://www.unicode.org/versions/Unicode17.0.0/core-spec/appendix-c/

Few applications are expected to make use of all of the characters defined in ISO/IEC 10646. The conformance clauses of the two standards address this situation in very different ways. ISO/IEC 10646 provides a mechanism for specifying included subsets of the character repertoire, permitting implementations to ignore characters that are not included (see normative Annex A of ISO/IEC 10646). A Unicode implementation requires a minimal level of handling all character codes—namely, the ability to store and retransmit them undamaged. Thus the Unicode Standard encompasses the entire ISO/IEC 10646 repertoire without requiring that any particular subset be implemented.

So maybe we can have a dated reference to a specific edition of ISO/IEC 10646 strictly for the Japanese collections.

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@himorin himorin Sep 26, 2025

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downloaded ISO PDF and checked about collection.
Collections are defined in normative Annex A Collections of graphic characters for subsets, and defined collections 301 to 321 represent whole UCS, like 303 for Unicode 3.1 (detailed in Annex A.3). So, I suppose this will not be in Unicode side, but just in ISO. CJK collections, from 370, are defined in Annex A.4 subsections and refer source reference file for CJK Unified Ideographs (CJKSrc). Collections from 370 to 375 (and 380-389) are marked as fixed collection, so these will not be changed by newer edition of ISO 10646 (p2751 of 10646:2000).

So, in total, I'd agree to use dated reference.

title: " ISO/IEC 10646:2020 Information technology — Universal coded character set (UCS)/"
}
}
};
Expand Down Expand Up @@ -3627,11 +3622,11 @@ <h2>Common Character Sets</h2>

<td>
(Basic Japanese Collection)<br>
Collection 285 at [[ISO10646]]<br>
Collection 285 at [[UNICODE]]<br>
(Japanese Non Ideographic Extension)<br>
Collection 286 at [[ISO10646]]<br>
Collection 286 at [[UNICODE]]<br>
(JIS2004 Ideographics Extension)<br>
Collection 371 at [[ISO10646]]<br>
Collection 371 at [[UNICODE]]<br>
(Fullwidth ASCII variants)<br>
U+FF01 – U+FF5E<br>
(Fullwidth Symbol variants)<br>
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