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Add font-fallback #17614

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opened 2026-01-31 05:47:47 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 05:47:47 +00:00
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Originally created by @r-hoogenboom on GitHub (Jun 1, 2022).

Description of the new feature/enhancement

Currently the console(terminal) seems to have no support for fallback of glyphs missing from the currently selected font to other installed font that does have the glyph, like firefox does. It would be nice if that could be added.

Proposed technical implementation details (optional)

For instance, the unicode code block for legacy computing is very poorly supported in almost all fonts. There is a font on github that provides support for that block, which can be selected in the console when installed. The thing is that you select that font, you don't see the normal character glyphs, you select a regular console font, you don't see the glyphs from the legacy computing block. I would like to see that when a code point is output to the terminal that doesn't have a glyph in the current font, a glyph is taken from another font as a fallback instead of showing a square.

Originally created by @r-hoogenboom on GitHub (Jun 1, 2022). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> # Description of the new feature/enhancement Currently the console(terminal) seems to have no support for fallback of glyphs missing from the currently selected font to other installed font that does have the glyph, like firefox does. It would be nice if that could be added. <!-- A clear and concise description of what the problem is that the new feature would solve. Describe why and how a user would use this new functionality (if applicable). --> # Proposed technical implementation details (optional) For instance, the [unicode code block for legacy computing](https://www.unicode.org/charts/nameslist/c_1FB00.html) is very poorly supported in almost all fonts. There is a [font on github](https://github.com/dokutan/legacy_computing-font) that provides support for that block, which can be selected in the console when installed. The thing is that you select that font, you don't see the normal character glyphs, you select a regular console font, you don't see the glyphs from the legacy computing block. I would like to see that when a code point is output to the terminal that doesn't have a glyph in the current font, a glyph is taken from another font as a fallback instead of showing a square. <!-- A clear and concise description of what you want to happen. -->
claunia added the Issue-FeatureResolution-Duplicate labels 2026-01-31 05:47:48 +00:00
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Reference: starred/terminal#17614
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