Some glyphs not showing up in WSL #7488

giggio · 2024-05-30T04:59:29Z

giggio
May 30, 2024

Hello there,

I am not able to show some glyphs under WSL. I am running kitty 0.34.1 under Ubuntu and Wayland.
I'm trying simple echo commands as a PoC:

echo -e "\U1F4DD\U0001f937\U0001f936"
echo -e "\U0000e0a0"

Here are the results under Kitty:

And this is under Windows Terminal:

I have tried everything and can't find a reason for why Kitty is behaving like that.

I have a symbol map configured:

symbol_map U+0001-U+FFFFF CaskaydiaCove Nerd Font Mono

Then, when I run the application I get these logs:

$ VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json GALLIUM_DRIVER=llvmpipe kitty --debug-font-fallback
[0.048] Preloaded font faces:
[0.048] normal face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Regular.ttf:0
[0.048] bold face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Bold.ttf:0
[0.048] italic face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Italic.ttf:0
[0.048] bi face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-BoldItalic.ttf:0
[0.048] Symbol map faces:
[0.048] /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Regular.ttf:0
[0.151] [glfw error 65544]: process_desktop_settings: failed with error: [org.freedesktop.DBus.Error.ServiceUnknown] The name org.freedesktop.portal.Desktop was not provided by any .service files
ignoreboth or ignorespace present in bash HISTCONTROL setting, showing running command in window title will not be robust
[244.808] [glfw error 65544]: Wayland: Cannot copy no primary selection device available

If I remove the symbol map, I get uglier messages:

$ VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json GALLIUM_DRIVER=llvmpipe kitty --debug-font-fallback
[0.081] Preloaded font faces:
[0.081] normal face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Regular.ttf:0
[0.081] bold face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Bold.ttf:0
[0.081] italic face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-Italic.ttf:0
[0.081] bi face: /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFontMono-BoldItalic.ttf:0
[0.246] [glfw error 65544]: process_desktop_settings: failed with error: [org.freedesktop.DBus.Error.ServiceUnknown] The name org.freedesktop.portal.Desktop was not provided by any .service files
ignoreboth or ignorespace present in bash HISTCONTROL setting, showing running command in window title will not be robust
[7.755] U+1f4dd emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[7.755] The font chosen by the OS for the text: U+1f4dd is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[7.756] U+1f937 emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[7.756] The font chosen by the OS for the text: U+1f937 is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[7.757] U+1f936 emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[7.757] The font chosen by the OS for the text: U+1f936 is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text

And Kitty shows this:

I noticed another strange behavior, if I try to set the symbol map to something else, it fails and tells me that it selected a font called Noto, which is a system installed font.
Setting symbol_map U+10000-U+FFFFF CaskaydiaCoveNerdFontMono-Regular, gives me:

[0.091] Symbol map faces:
[0.091] /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0

Anyone has some idea of what could be causing this? I'd like to get these glyphs showing correctly.

More context:

the VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json GALLIUM_DRIVER=llvmpipe are to configure the display driver, if I remove them the behavior does not change.
I have tried running under x11 (with linux_display_server x11), and I get the same results.
I have tried removing all my configuration and I get the same results.
I have tried changing fonts, and I get the same results.
This setup works under the same machine when it boots directly to Ubuntu.
I'm running Kitty with Nix/home-manager, but the one from Ubuntu sources (which is slightly older) produces the same results.
dotfiles are at https://github.com/giggio/dotfiles

kovidgoyal · 2024-05-30T05:07:29Z

kovidgoyal
May 30, 2024
Maintainer

As always, dont use patched fonts. See the kitty FAQ about it. And absolutely do not map all unicode codepoints to a single font. The FAQ again has the appropriate mapping to use for nerd fonts.

3 replies

giggio May 30, 2024
Author

Ok, thanks for the tips. I followed the FAQ and commented my font configuration. I already had Symbols Nerd Font Mono installed, so I added to my config:

symbol_map U+e000-U+e00a,U+ea60-U+ebeb,U+e0a0-U+e0c8,U+e0ca,U+e0cc-U+e0d4,U+e200-U+e2a9,U+e300-U+e3e3,U+e5fa-U+e6b1,U+e700-U+e7c5,U+f000-U+f2e0,U+f300-U+f372,U+f400-U+f532,U+f0001-U+f1af0 Symbols Nerd Font Mono

It did not work.

This is what I get in the logs:

[0.049] Preloaded font faces:
[0.049] normal face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.049] bold face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.049] italic face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.049] bi face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.049] Symbol map faces:
[0.049] /home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/SymbolsNerdFontMono-Regular.ttf:0
[0.150] [glfw error 65544]: process_desktop_settings: failed with error: [org.freedesktop.DBus.Error.ServiceUnknown] The name org.freedesktop.portal.Desktop was not provided by any .service files
ignoreboth or ignorespace present in bash HISTCONTROL setting, showing running command in window title will not be robust
[1.041] U+1f4dd bold emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[1.041] The font chosen by the OS for the text: U+1f4dd is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[1.041] U+276f bold Face(family=CaskaydiaCove NF, style=Bold, ps_name=CaskaydiaCoveNF-Bold, path=/home/giggio/.nix-profile/share/fonts/truetype/NerdFonts/CaskaydiaCoveNerdFont-Bold.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1900, descender=-480, height=2380, underline_position=-150, underline_thickness=100, strikethrough_position=636, strikethrough_thickness=100)
[12.683] U+1f4dd emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[12.683] The font chosen by the OS for the text: U+1f4dd is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[12.684] U+1f937 emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[12.684] The font chosen by the OS for the text: U+1f937 is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[12.685] U+1f936 emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[12.685] The font chosen by the OS for the text: U+1f936 is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text

This is the screenshot:

What could be going wrong?

kovidgoyal May 30, 2024
Maintainer

See the messages in your log. They are refering to fonts that claim to have the chars but dont. Uninstall those, then hopefully the fallback will pick a font that actually has those characters. And font forget to update the fontconfig cache after uninstalling the fonts.

giggio May 31, 2024
Author

Again, thank you for taking time to help me fix this.
I did that, unistalled it all. Manually downloaded the zip file for SymbolsNerdFontMono-Regular, as stated in the faq, and added it to my local fonts directory. Uninstalled all those fonts.
Now, I have 2 weird behaviors:

First: when I use the symbol map from the FAQ and start it, I get the same result from echo, 6 squares, and this log:

VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json GALLIUM_DRIVER=llvmpipe kitty --debug-font-fallback
[0.091] Preloaded font faces:
[0.091] normal face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.091] bold face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.091] italic face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.091] bi face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.091] Symbol map faces:
[0.091] /home/giggio/.fonts/SymbolsNerdFontMono-Regular.ttf:0
[0.378] [glfw error 65544]: process_desktop_settings: failed with error: [org.freedesktop.DBus.Error.ServiceUnknown] The name org.freedesktop.portal.Desktop was not provided by any .service files
ignoreboth or ignorespace present in bash HISTCONTROL setting, showing running command in window title will not be robust
[1.436] U+276f bold Face(family=Noto Sans Symbols2, style=Regular, ps_name=NotoSansSymbols2-Regular, path=/usr/share/fonts/truetype/noto/NotoSansSymbols2-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-630, height=1699, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[3.192] U+1f4dd emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[3.192] The font chosen by the OS for the text: U+1f4dd is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[3.193] U+1f937 emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[3.193] The font chosen by the OS for the text: U+1f937 is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text
[3.193] U+1f936 emoji_presentation Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50)
[3.193] The font chosen by the OS for the text: U+1f936 is Face(family=Noto Sans, style=Regular, ps_name=NotoSans-Regular, path=/usr/share/fonts/truetype/noto/NotoSans-Regular.ttf, ttc_index=0, variation_index=0x0 is_scalable=True, has_color=False, ascender=1069, descender=-293, height=1362, underline_position=-125, underline_thickness=50, strikethrough_position=322, strikethrough_thickness=50) but it does not actually contain glyphs for that text

You can see that these 4 symbols (the first from my prompt, the other 3 from the echo command) are not mapped, so it is going to the default font (Noto). Maybe the map from the faq needs updating?

Then, the second thing, what if I map them?

symbol_map U+276f,U+1F4DD,U+1f937,U+1f936 Symbols Nerd Font Mono

This is what I get on the screen, what looks like an empty echo:

And this is the log (without errors for glyphs not found):

$ VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json GALLIUM_DRIVER=llvmpipe kitty --debug-font-fallback
[0.103] Preloaded font faces:
[0.103] normal face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.103] bold face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.103] italic face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.103] bi face: /usr/share/fonts/truetype/noto/NotoMono-Regular.ttf:0
[0.103] Symbol map faces:
[0.103] /home/giggio/.fonts/SymbolsNerdFontMono-Regular.ttf:0
[0.257] [glfw error 65544]: process_desktop_settings: failed with error: [org.freedesktop.DBus.Error.ServiceUnknown] The name org.freedesktop.portal.Desktop was not provided by any .service files
ignoreboth or ignorespace present in bash HISTCONTROL setting, showing running command in window title will not be robust

So, kitty is finding the glyphs within the font, but nothing is displayed. Why?

kovidgoyal · 2024-05-31T15:37:55Z

kovidgoyal
May 31, 2024
Maintainer

Those are not glyphs in the NERD fonts. NERD fonts are from the PUA unicode block. I suggest you install a font that actually has those glyphs some like symbola probably.

3 replies

giggio May 31, 2024
Author

Downloaded Symbola from https://fonts2u.com/symbola.font
Now we have progress, mapping like:

symbol_map U+276f,U+1F4DD,U+1f937,U+1f936 Symbola

I get:

So, at least I can see the first symbol.

Why do these symbols display correctly when I'm in Ubuntu directly, with the same configuration, but not on WSL? Is kitty loading them from somewhere else? Maybe something from the OS itself? Is there anything I could do to mimic that behavior on WSL?

And how come Symbols Nerd Font Mono has these symbols? Kitty was not complaining that it couldn't find them, it just did not show them. I tested with fc-list, and the glyph is there:

$ fc-list :charset=276f | grep Symbols
/home/giggio/.fonts/SymbolsNerdFontMono-Regular.ttf: Symbols Nerd Font Mono:style=Regular
/home/giggio/.fonts/SymbolsNerdFont-Regular.ttf: Symbols Nerd Font:style=Regular

I'm sorry about so many questions. I want to be able to have kitty working well on WSL for when I'm on Windows... What can I do to get these symbols to show up?

kovidgoyal May 31, 2024
Maintainer

I have no clue about WSL. Never used it. Linux based Kitty will load fonts from wherever fontconfig tells it there are fonts. If your WSL ubuntu and non wsl ubuntu are behaving differently then there are differences in them, somewhere. And U+276f is regular unicode symbol, you dont need a nerd font for it. Noto Sans for instance will have it. so probably will symbola. It looks liek neither noto sans nor the nerd font are functional on your system. Why that may be, I have no idea.

giggio May 31, 2024
Author

True, both 276F and e0a0 show up fine without any extra mapping.
I'll investigate and bring whatever information I find here. You've been helpful, thanks.

sbradnick · 2024-05-31T17:07:10Z

sbradnick
May 31, 2024

It does work, I'm using openSUSE-Tumbleweed with CascadiaCodeNF and google-noto-coloremoji-fonts.

2 replies

giggio May 31, 2024
Author

What's your config?

sbradnick May 31, 2024

Defaults w/ the exception of linux_display_server x11.

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Some glyphs not showing up in WSL #7488

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Some glyphs not showing up in WSL #7488

giggio May 30, 2024

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kovidgoyal May 30, 2024 Maintainer

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May 30, 2024
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giggio May 30, 2024
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