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40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
### Advanced Font Shaping Options
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The `harfbuzz_features` option allows specifying the features to enable when
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using harfbuzz for font shaping.
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There is some light documentation here:
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<https://harfbuzz.github.io/shaping-opentype-features.html>
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but it boils down to allowing opentype feature names to be specified
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using syntax similar to the CSS font-feature-settings options:
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<https://developer.mozilla.org/en-US/docs/Web/CSS/font-feature-settings>.
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The OpenType spec lists a number of features here:
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<https://docs.microsoft.com/en-us/typography/opentype/spec/featurelist>
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Options of likely interest will be:
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* `calt` - <https://docs.microsoft.com/en-us/typography/opentype/spec/features_ae#tag-calt>
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* `clig` - <https://docs.microsoft.com/en-us/typography/opentype/spec/features_ae#tag-clig>
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If you want to disable ligatures in most fonts, then you may want to
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use a setting like this:
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```toml
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harfbuzz_features = ["calt=0", "clig=0", "liga=0"]
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```
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Some fonts make available extended options via stylistic sets.
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If you use the [Fira Code font](https://github.com/tonsky/FiraCode),
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it lists available stylistic sets here:
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<https://github.com/tonsky/FiraCode/wiki/How-to-enable-stylistic-sets>
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and you can set them in wezterm:
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```toml
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# Use this for a zero with a dot rather than a line through it
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# when using the Fira Code font
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harfbuzz_features = ["zero"]
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```
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