[NTG-context] CJK Unified Ideographs Extension J missing in char-ini.lua

[NTG-context] CJK Unified Ideographs Extension J missing in char-ini.lua

[Jairo A. del Rio]

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Hi. Currently, char-ini doesn't assign a ConTeXt name for CJK Unified
Ideographs Extension J. I've added this line after line 257 and it works:

    ["cjkunifiedideographsextensionj"]              = { first = 0x323B0,
last = 0x3347F,              description = "CJK Unified Ideographs
Extension J" },

Since some fonts already support this range, a name would come in handy
(see sample attached). There are probably other Unicode range names from
Unicode 17.0 to be added, but I have not checked them out yet.

Regards,

Jairo

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\usetypescript[latinmodern]
\definefontfallback[cjk-j][jigmo3][cjkunifiedideographsextensionj][force=yes]
\definefontsynonym[Serif][latinmodern][fallbacks=cjk-j]
\setupbodyfont[latinmodern]

\startTEXpage[margin=0pt,align={middle,lohi}]

Sample: 𲎰𲎱𲎲𲎳𲎴𲎵𲎶𲎷𲎸𲎹𲎺𲎻𲎼𲎽𲎾𲎿

\stopTEXpage

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[NTG-context] Re: CJK Unified Ideographs Extension J missing in char-ini.lua

[Wolfgang Schuster]

Am 03.03.2026 um 19:56 schrieb Jairo A. del Rio:
> Hi. Currently, char-ini doesn't assign a ConTeXt name for CJK Unified 
> Ideographs Extension J. I've added this line after line 257 and it works:
> 
>      ["cjkunifiedideographsextensionj"]              = { first = 
> 0x323B0, last = 0x3347F,              description = "CJK Unified 
> Ideographs Extension J" },

You can send your modified file to Hans.

> Since some fonts already support this range, a name would come in handy 
> (see sample attached). There are probably other Unicode range names from 
> Unicode 17.0 to be added, but I have not checked them out yet.

https://www.unicode.org/versions/Unicode17.0.0/#Character_Additions

Wolfgang

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[NTG-context] Re: CJK Unified Ideographs Extension J missing in char-ini.lua

[Hans Hagen via ntg-context]

On 3/3/2026 10:54 PM, Jairo A. del Rio wrote:
> Hi, Wolfgang and Hans. I updated char-ini.lua to include new Unicode 
> 17.0 codepoint ranges.

Updating unicode happens bit differently and hasn't changed much since 
we started with mkiv. There is a script that filters data from various 
files and updates the character database (so I don't have to waste much 
time on it). However, because we also add our own info there, I always 
(visually) diff the changes in order to see if all went well.

I hadn't noticed the 17 update so I just synched. Normally updating 
takes little time. It looks like again this time some egyptian stuff was 
added (I'm still considering moving some rare ancient scripts to a 
second database and load those on demand). There are also some more 
variants defined so I decided to adapt that a bit more agressively.

These ranges: the script reports them so I then add them. With respect 
to emoji, we do some magic with the test file in order to support 
sequences. I could probably do a bit more but emoji are not a top 
priority in the kind of typesetting doen with context.

So, a next upload will be in sync with unicode.

Hans


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