[Linux] Question about fallback fonts #75

wbthomason · 2020-01-28T23:41:03Z

I'm having an issue with fallback fonts (I think?), and was wondering if more information about how that mechanism works could help me debug.

For context, I'm on Arch Linux, building from master. When I run neovide, I get something that looks like the below:

Note the improperly rendered characters in the statusline. In the terminal (kitty, specifically), the same view looks like:

with symbols correctly rendered. The same font (Fira Code Retina) is set as both my terminal font and my guifont in ginit.vim.

Given that I know kitty does use fallback font handling for symbols (particularly the "Nerd Font" symbols), I'm guessing that there's some issue with how neovide is choosing a fallback font on my system.

Can you elaborate on how the fallback mechanism works/where in the code I should be reading to try and debug this? Thanks!

The text was updated successfully, but these errors were encountered:

Kethku · 2020-01-28T23:43:36Z

Could you try with this font: https://github.com/ryanoasis/nerd-fonts/tree/master/patched-fonts/FiraCode/Retina/complete

Give me a sec to write up a blurb about the font recognition

wbthomason · 2020-01-28T23:44:26Z

Sure, just a sec.

Kethku · 2020-01-28T23:50:15Z

Neovide relies on Skribo (a largely unfinished project by Raph Levien) to delegate to harfbuzz its rendering. https://github.com/linebender/skribo
Skribo uses types from the FontKit project to locate the system fonts. https://docs.rs/font-kit/0.5.0/font_kit/source/trait.Source.html#method.select_best_match
Neovide builds a font collection using the configured font if available, the systems monospace font, and then an emoji font if it finds one. Unfortunately I don't have a nerd font in that list, so it won't have characters for the dividers like you've pointed out.

I have plans to embed fonts for the nerd portion, the emojis, and a basic ligature enabled monospace font, but I haven't done it yet.

Kethku · 2020-01-28T23:51:31Z

The font collection is built here: https://github.com/Kethku/neovide/blob/master/src/renderer/caching_shaper.rs#L36
The caching shaper is in charge of loading the initial collection, caching skia fonts based on that collection and shaping text using harfbuzz via skribo and caching the results for performance reasons

wbthomason · 2020-01-28T23:58:24Z

Alright. Unfortunately, setting the Nerd Font directly doesn't seem to have changed anything.

I confirmed that I have it installed with fc-list | rg "Fira Code Retina Nerd", which shows the expected .otf, and added as the last line of my ginit.vim and init.vim (in case ginit.vim wasn't being sourced for some reason) the line set guifont=Fira\ Code\ Retina\ Nerd\ Font\ Complete:h11.

The rendering does look different, but still incorrect:

I think my guifont may have been being set incorrectly in the original report (I was using set guifont="Fira Code Retina:h11", which I think didn't work because of the spaces?), but the same issue is exhibited.

wbthomason · 2020-01-28T23:59:01Z

Thanks for the pointer into the code; I'll take a look and see if I can add some debug logging to figure out what's happening when I have a chance (which may not be immediately).

Kethku · 2020-01-29T00:00:34Z

I suspect the name you are using is incorrect. Maybe try "FiraCode\ Nerd\ Font:h11" the name should be the font name not the name of the file.

Kethku · 2020-01-29T00:01:06Z

wbthomason · 2020-01-29T00:09:36Z

Ah, good idea. Sorry, I thought either the font or file name would work for lookup.

That did fix some, but not all of the issues:

Note that while the rounded corners are there, some of the symbols within them are still missing.

As another example, here's a source file in neovide and kitty:

Note the missing sidebar symbols and the missing/misrendered symbols in the statusline.

I suspect that kitty is using multiple fallback fonts (from what I recall of how its font selection mechanism works); I can figure out if this is the case and share the exact codepoints which are causing problems if that would help.

Also, thank you for the suggestions, help, and great tool!

Kethku · 2020-01-29T00:11:03Z

No problem! The extra rendering issues I believe are from emoji fonts? I'm not sure. Maybe it would be helpful to get a list of fallback fonts kitty uses?

Kethku · 2020-01-29T00:12:29Z

The exact codepoints may be useful. Its hard to figure out what set of fonts is necessary for all use cases

wbthomason · 2020-01-29T00:20:56Z

Sure. On my system, kitty --debug-fonts produces the following when I open the above Lua file:

[028 19:12:28.919800] Preloaded font faces:
[028 19:12:28.919852] normal face: /usr/share/fonts/OTF/FiraCode-Retina.otf:0
[028 19:12:28.919863] bold face: /usr/share/fonts/OTF/FiraCode-Bold.otf:0
[028 19:12:28.919873] italic face: /usr/share/fonts/liberation/LiberationMono-Italic.ttf:0
[028 19:12:28.919882] bi face: /usr/share/fonts/liberation/LiberationMono-BoldItalic.ttf:0
[028 19:12:28.919892] Symbol map faces:
[028 19:12:28.919901] /usr/share/fonts/nerd-fonts-complete/otf/3270-Medium Nerd Font Complete Mono.otf:0
U+ff1f bold Face(family=Noto Sans CJK JP, style=Bold, ps_name=NotoSansCJKjp-Bold, path=/usr/share/fonts/noto-cjk/NotoSansCJK-Bold.ttc, index=0, is_scalable=True, has_color=False, ascender=1160, descender=-288, height=1448, underline_position=-150, underline_thickness=50) (new face)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90) (new face)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+23fa Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70) (new face)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90) (new face)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50) (new face)
U+ff0a Face(family=Noto Sans CJK JP, style=Regular, ps_name=NotoSansCJKjp-Regular, path=/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc, index=0, is_scalable=True, has_color=False, ascender=1160, descender=-288, height=1448, underline_position=-150, underline_thickness=50) (new face)
U+23fa Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+283c Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+2834 Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+26a0 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+2834 Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+23fa Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+26a0 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+23fa Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+27a4 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+23fa Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+26a0 Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+23fa Face(family=Symbola, style=Regular, ps_name=Symbola, path=/usr/share/fonts/TTF/Symbola.ttf, index=0, is_scalable=True, has_color=False, ascender=1896, descender=-700, height=2596, underline_position=-595, underline_thickness=70)
U+2714 bold Face(family=DejaVu Sans Mono, style=Bold, ps_name=DejaVuSansMono-Bold, path=/usr/share/fonts/TTF/DejaVuSansMono-Bold.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+e620 Face(family=FuraMono Nerd Font Mono, style=Regular, ps_name=FuraMonoNerdFontCompleteM-Regular, path=/usr/share/fonts/nerd-fonts-complete/otf/Fura Mono Regular Nerd Font Complete Mono.otf, index=0, is_scalable=True, has_color=False, ascender=1050, descender=-350, height=1400, underline_position=-100, underline_thickness=50)
U+ff1f bold Face(family=Noto Sans CJK JP, style=Bold, ps_name=NotoSansCJKjp-Bold, path=/usr/share/fonts/noto-cjk/NotoSansCJK-Bold.ttc, index=0, is_scalable=True, has_color=False, ascender=1160, descender=-288, height=1448, underline_position=-150, underline_thickness=50)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)
U+276f Face(family=DejaVu Sans Mono, style=Book, ps_name=DejaVuSansMono, path=/usr/share/fonts/TTF/DejaVuSansMono.ttf, index=0, is_scalable=True, has_color=False, ascender=1901, descender=-483, height=2384, underline_position=-175, underline_thickness=90)

The codepoints are:

●
✔
🗙
➤
＊
＋
～
⚠

One other (probably unrelated) note: I get a segfault every time I exit; seems likely to be #73.

wbthomason · 2020-01-29T00:21:22Z

And yeah, supporting everybody's preferred fonts/font needs seems really very hard.

Kethku · 2020-01-29T00:22:53Z

Do you still get the segfault on current master? I tried to fix it :(

Kethku · 2020-01-29T00:24:07Z

Also interesting. Are tilde plus and star really not rendering? I could see the other ones failing but those should work

wbthomason · 2020-01-29T00:25:08Z

Unfortunately yes :/

The exact error output is

Error: 'Error reading message'
zsh: segmentation fault (core dumped) target/release/neovide

If you think it's not #73 I'll open a new issue to avoid cluttering this one.

Kethku · 2020-01-29T00:25:25Z

No it seems likely to be similar

wbthomason · 2020-01-29T00:28:33Z

re: Tilde, plus, and star: The normal (ASCII) versions of those symbols work, but the symbols I sent above are full-width versions (the rendering in terminal nvim is prettier than using the "normal" versions).

The characters are these:
Asterisk: http://unicode.scarfboy.com/?s=%EF%BC%8A
Plus: http://unicode.scarfboy.com/?s=%EF%BC%8B
Tilde: http://unicode.scarfboy.com/?s=%EF%BD%9E

Kethku · 2020-01-29T00:29:19Z

woah til

Kethku · 2020-01-29T00:29:44Z

Any chance you know which of your fonts they come from?

Kethku · 2020-01-29T00:33:43Z

Noticed underlines were broken btw in your screencap, so I fixed them. Thanks for the detailed report

wbthomason · 2020-01-29T00:34:03Z

From the kitty output, it seems like they come from "Noto Sans CJK JP" (that's the font associated with the U+ff0a (asterisk) codepoint in the output)

wbthomason · 2020-01-29T00:34:32Z

Noticed underlines were broken btw in your screencap, so I fixed them. Thanks for the detailed report

Haha, nice catch. I hadn't even noticed that myself.

Kethku · 2020-01-29T00:36:15Z

Ok so looks like its a font specialized towards double width characters from non latin based languages. So to solve all of these in one go, I need to embed a standard monospace, a wide space, and a nerd font. Ideally all with normal, bold, italic, and bold-italic variants. That seems doable

Kethku · 2020-01-29T00:37:05Z

Oh also an emoji font. So 3 * 4 + 1 (emoji) in total

wbthomason · 2020-01-29T00:37:56Z

Yikes, sorry :/ That sounds like a lot. Any way I can help (with the caveat that my time for hacking is limited at the moment)?

Kethku · 2020-01-29T00:40:10Z

Nah shouldn't be too bad actually. I already have an embedding system that should work and I think I'm just going to embed the fira code fonts. One thing I need to figure out is a license compliant way to display the font license. Maybe I should create a special NeovideFontLicenses command which writes the license to disk and opens them in the editor...

Kethku · 2020-01-29T00:40:54Z

Maybe I'll default on my MS roots and embed Cascadia Code ;)

Kethku · 2020-01-29T06:46:16Z

I've got them all working except the x emoji

Any chance you could use your nifty kitty tricks to figure out which font it comes from?

wbthomason · 2020-01-29T19:03:29Z

Hmm, it's unfortunately not as clear from the logs, but my guess would be either 3270-Medium Nerd Font Complete Mono or Symbola?

Kethku · 2020-01-29T19:14:27Z

Its not the Nerd Font Complete because I already embed a version of that. Its probably a symbol font...

Its frustrating because the real solution is to do os specific font fallback, but there isn't a rust library that does that today. Skribo has it on the roadmap, but as far as I can tell it doesn't do it yet.

Kethku · 2020-01-29T19:28:21Z

So I think my answer is that this is fixed as far as its going to go for now. To really solve it I need better library support (or to write my own) or maybe provide a method for letting the user manually list what fonts they want in their font fallback cascade. Does this solve it sufficiently for you for now?

wbthomason · 2020-01-29T19:32:59Z

Yeah, seems totally reasonable. Thanks!

p00f · 2020-07-08T17:47:02Z

@wbthomason Can you share your sidebar and statusline details (plugin+config)

Sorry for the spam

wbthomason · 2020-07-09T04:36:17Z

@PitcherTear22: I don’t actually use that statusline config anymore, but it was custom (not a plugin) and adapted from https://github.com/elenapan/dotfiles/blob/master/config/nvim/statusline.vim

You can see my current config files at https://github.com/wbthomason/dotfiles/tree/linux/neovim/.config/nvim; if you’re specifically interested in the statusline and sign config, those are mostly in:

My colorscheme (responsible for some of the side bar, etc.) is https://github.com/wbthomason/vim-nazgul

Hope this helps!

Kethku added the bug Something isn't working label Jan 29, 2020

Kethku added the waiting Waiting on someone else label Jan 29, 2020

wbthomason closed this as completed Jan 29, 2020

wbthomason mentioned this issue Feb 7, 2020

Missing Unicode symbols (maybe Powerline symbols issue?) yatli/fvim#103

Open

emmanueltouzery mentioned this issue Feb 5, 2022

╱ unicode pattern does not display as well as in the terminal #1197

Open

[Linux] Question about fallback fonts #75

[Linux] Question about fallback fonts #75

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