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Unicode Box drawings characters not rendered correctly (disappear) with Japanese fonts #13527
Description
Windows Terminal version
1.13.11432.0
Windows build number
10.0.22000.0
Other Software
MyricaM https://github.com/tomokuni/Myrica/raw/master/product/MyricaM.7z
Ricty Diminished https://github.com/mzyy94/RictyDiminished-for-Powerline/blob/master/RictyDiminished-Regular.ttf
Steps to reproduce
- Set font face to e.g. MyricaM M.
- Print characters like
U+2500 BOX DRAWINGS LIGHT HORIZONTALandU+2502 BOX DRAWINGS LIGHT VERTICALby running e.g.tree.
/tmp/test
├── bar
│ └── baz
└── foo
1 directory, 2 files
Expected Behavior
─ and │ are printed.
Actual Behavior
Those characters are rendered improperly.
MyricaM M ... vertical bars are missing, and horizontal bars have wrong width
Ricty Diminished ... horizontal bars are missing
Lucida Console ... OK (though Japanese characters fall back to another font (I can't tell which font), causing weird spacing between letters)
Activity
zadjii-msft commentedon Jul 18, 2022
Huh. Thanks for the report! Dunno why this would be happening. Hopefully this gets fixed with the new experimental text renderer, we'll see.
lhecker commentedon Jul 18, 2022
That font is Yu Gothic UI Regular.
Yu Gothic is a proportional font according to Wikipedia and if that's correct we should probably pick MS Gothic instead:
In either case, the good news is that this issue doesn't occur with the experimental text rendering engine ("AtlasEngine"):
The line drawings have significant gaps now unfortunately, but at least they're visible and it's an issue that I'm currently planning to improve on in the near-ish future.
kissge commentedon Jul 19, 2022
Great to hear that!
I've confirmed that too, with Preview 1.15.1863.0.
Seemingly, yes, that's true.
Or I'd rather suggest that if a user can explicitly set "fallback" font faces, just like CSS
font-family, that'd be even better. I think this is already possible e.g. in Visual Studio Code, which has different rendering mechanism, so it may not be straightforward how to introduce such capability to Terminal.lhecker commentedon Aug 23, 2022
Mike Griese (@zadjii-msft) We improved box drawing rendering for AtlasEngine in #13549. Should we close this issue now?
Rewrite AtlasEngine to allow arbitrary overhangs (#14959)
tats-u commentedon Jun 5, 2026
Note: all Japanese and Chinese (full-width) characters in Yu Gothic have the same width. Only European-specific (and some ambiguous) characters have various proportional widths.
European characters in BIZ UDGothic have a width that is exactly half the width of Japanese characters like those in MS Gothic. However, its bold variant is too light compared to Cascadia Code.
tats-u commentedon Jun 5, 2026
Footnotes
except when you apply some OpenType features like
palt,pkna,pwid↩