Bug 2138327

Is gedit or some other application able to display these characters or only Firefox and Thundebird are failing?

(In reply to Tomas Popela from comment #1)
> Is gedit or some other application able to display these characters or only
> Firefox and Thundebird are failing?

gedit can display these characters.
firefox can't.

Created attachment 1950179 [details]
gedit

Created attachment 1950180 [details]
firefox-h

Created attachment 1950181 [details]
firefox-g

And last thing - can you please try to use upstream binary from https://www.mozilla.org/en-US/firefox/all/#product-desktop-release (currently Firefox 110) and https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr (currently 102.8) and let us know how it works there?

(In reply to Tomas Popela from comment #6)
> And last thing - can you please try to use upstream binary from
> https://www.mozilla.org/en-US/firefox/all/#product-desktop-release
> (currently Firefox 110) and
> https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr (currently
> 102.8) and let us know how it works there?

I don't have a test environment to run third-party programs.
Sorry.

Jens, could you help with that? Is any specific font required for the new Unicode 15.0.0 characters? I've opened the page https://cnman.github.io/font/CJKUnifiedIdeographsExtensionH.html and copied the content to gedit and I still see the unicode numbers instead of characters.

(In reply to Jan Horak from comment #8)
> Jens, could you help with that? Is any specific font required for the new
> Unicode 15.0.0 characters? I've opened the page
> https://cnman.github.io/font/CJKUnifiedIdeographsExtensionH.html and copied
> the content to gedit and I still see the unicode numbers instead of
> characters.

Well it doesn't render for me even in Fedora 38...

Moving to google-noto-cjk-fonts

But I think this wait on upstream to support Unicode 15.

I installed the font given in the first comment from http://cheonhyeong.com/File/TH-Tshyn-4.0.0.7z

i.e. now I see:

$ fc-match :charset=31350 file family style 
TH\-Tshyn\-P1:style=Regular,SiongKui,Ippan,Ilban,Thường,ChangGui,SoengKwhai:file=/home/mfabian/.fonts/TH-Tshyn-P1.ttf

Before installing that font fc-match did not find anything.

Now I can display U+31350 fine both in gedit *and* firefox in Fedora 38.

firefox-113.0.1-1.fc38.x86_64

Moving back to Firefox:

We suspect this requires backporting Unicode 15 support to Firefox ESR.

Mike, can you please test it on Fedora with the Firefox ESR - available from https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr (to really confirm that it's a problem of Firefox ESR)?

Unicode 15 is supported since FF 109, see: https://bugzilla.mozilla.org/show_bug.cgi?id=1792775
So if is it case of unicode 15, ESR 102 is affected. The ESR 115 should fix it for us.

Great, thank you Jan! Let me move this to POST so it can be tested once we move to ESR 115 (similar as with bug 2035779 or bug 2028942)

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