no support for new Nerd Font Unicode range

[markonop93]

Versions

ConEmu build: 221218 x64
OS version: Windows 10 x64
Used shell version: whatever, for example Powershell7

Problem description

Conemu does not display correct Unicode from this ranges ryanoasis/nerd-fonts#1059 (comment) For example "`u{f45d} `u{f1a5e} `u{e0c3} `u{f1a5f}" in Powershell 7 does not display correct f1a5e and f1a5f. Windows Terminal displays it correct

Steps to reproduce

1. Use "`u{f45d} `u{f1a5e} `u{e0c3} `u{f1a5f}" command in Conemu Powershell 7

Actual results

Squares (or other unknown character depend on font) display at position 2 and 4

Expected results

Regular character from nerd font should display

[Finii]

Maybe the title of this should include "5 digit unicode".
The 5 digits means more than 2 bytes, windows with 16 bit chars this is 4 bytes.

Also compare

• 4 bytes unicode char are not handled properly. #2128
• https://conemu.github.io/en/UnicodeSupport.html

Also, the unicode-support page linked above talks about 'Font charset'.
In fact there is a bitfield in fonts that inform about the unicode ranges that font contains. If I remember correctly fontforge has a bug that does NOT set the appropriate bit for PUA-A (i.e. 5 digit Nerd Font icons). I have never noticed any application that checks that bits, but maybe it is different here.

[Finii]

@markonop93 for testing purposes I can provide you with a manually corrected charset-bitfield Agave font set, so that we could rule that out (or fix the problem, but I doubt that)?

[markonop93]

@Finii sure feel free sending me anything for test ^^
Pls notice I have caching issue so other font which unused by me still would be better . for example Ubuntu Nerd Font

[markonop93]

@Finii sorry for ping , only to make sure you did not forgot :)

[Finii]

:-) Sorry, of course I did forget. Let my quickly implement that.

[Finii]

We need to have bit 90 set:

https://learn.microsoft.com/en-us/typography/opentype/spec/os2#ulunicoderange1-bits-031ulunicoderange2-bits-3263ulunicoderange3-bits-6495ulunicoderange4-bits-96127

The left byte of the third block holds bits 88 to 95.
The 00 resp. 04 is then bit 90.

AgaveNF-Regular.zip

(It was Agave, right?)

---

I hope .NET is not involved here...: 😒

https://learn.microsoft.com/en-us/dotnet/api/system.text.unicode.unicoderange?view=net-8.0#remarks

[markonop93]

@Finii unfortunately it did not help . same characters dont work